Overview
The LA76070 is an NTSC color television IC. In addition
to providing IIC bus control based rationalization of IC
control and the adjustment manufacturing process
associated with the TV tube itself, it also includes all
functions actually required in mass-produced television
sets. As such, it is an extremely practical bus control IC.
*
The LA7840/41 or LA7845N/46N is recommended as the vertical output
IC for use with this product.
Functions
I
2
C bus control, VIF, SIF, Y, C, and deflection
integrated on a single chip.
Package Dimensions
unit: mm
3128-DIP52S
46.0
0.48
1.05
1.78
0.75
4.25
15.24
0.25
13.8
0.51min
5.1max
3.8
26
1
27
52
Monolithic Linear IC
Ordering number : ENN5844
70999 RM (OT) No. 5844-1/27
SANYO: DIP52S
[LA76070]
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
NTSC Color Television IC
LA76070
Specifications
Maximum Ratings
at Ta = 25C
Note:
*
Provided on a printed circuit board: 83.2
86.0
1.6 mm, material: Bakelite
Operating Conditions
at Ta = 25C
Parameter
Symbol
Conditions
Rating
Unit
Maximum power supply voltage
V4 max
9.6
V
V26 max
9.6
V
Maximum power supply current
I21 max
25
mA
Allowable power dissipation
Pd max
Ta
65C
*
1.3
W
Operating temperature
Topr
10 to +65
C
Storage temperature
Tstg
55 to +150
C
Parameter
Symbol
Conditions
Rating
Units
Recommended power supply voltage
V4
7.6
V
V26
7.6
V
Recommended power supply current
I21
19
mA
Operating power supply voltage range
V4 op
7.3 to 7.9
V
V26 op
7.3 to 7.9
V
Operating power supply current range
121 op
16 to 25
mA
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft's
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
Electrical Characteristics
at Ta = 25C, V
CC
= V4 = V26 = 7.6 V, I
CC
= I21 = 19 mA
No. 5844-2/27
LA76070
Continued on next page.
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
[Circuit Voltages and Currents]
Horizontal power supply voltage
HV
CC
7.2
7.6
8.0
V
IF power supply current (V4)
I4 (IFI
CC
)
IF AGC: 5 V
38
46
54
mA
Video, chroma,
I26 (YCVI
CC
)
79.5
93.5
107.5
mA
and vertical power supply current (V26)
[VIF Block]
AFT output voltage with no signal
VAFTn
With no input signal
2.8
3.8
4.8
Vdc
Video output voltage with no signal
VOn
With no input signal
4.7
4.9
5.1
Vdc
APC pull-in range (U)
fPU
After APC and PLL DAC adjustment
1.0
MHz
APC pull-in range (L)
fPL
After APC and PLL DAC adjustment
1.0
MHz
Maximum RF AGC voltage
VRFH
CW = 91 dB, DAC = 0
7.7
8.2
9.0
Vdc
Minimum RF AGC voltage
VRFL
CW = 91 dB, DAC = 63
0
0.2
0.4
Vdc
RF AGC Delay Pt (@DAC = 0)
RFAGC0
DAC = 0
96
dB
RF AGC Delay Pt (@DAC = 63)
RFAGC63
DAC = 63
86
dB
Maximum AFT output voltage
VAFTH
CW = 93 dB, variable frequency
6.2
6.5
7.6
Vdc
Minimum AFT output voltage
VAFTL
CW = 93 dB, variable frequency
0.5
0.9
1.2
Vdc
AFT detection sensitivity
VAFTS
CW = 93 dB, variable frequency
33
25
17
mV/kHz
Video output amplitude
VO
93 dB, 87.5% Video MOD
1.8
2.0
2.2
Vp-p
Synchronization signal tip level
VOtip
93 dB, 87.5% Video MOD
2.4
2.6
2.8
Vdc
Input sensitivity
Vi
Output at 3 dB
43
46
dB
Video-to-sync ratio (@100 dB)
V/S
100 dB, 87.5% Video MOD
2.4
2.5
3.0
Differential gain
DG
93 dB, 87.5% Video MOD
2
10
%
Differential phase
DP
93 dB, 87.5% Video MOD
2
10
deg
Video signal-to-noise ratio
S/N
CW = 93 dB
55
58
dB
920 kHz beat level
I920
V3.58 MHz/V920 kHz
50
dB
[Video and Switching Block]
External video gain
AUXG
Stair step, 1 V p-p
5.5
6.0
6.5
dB
External video sync signal tip voltage
AUXS
Stair step, 1 V p-p
0.2
0.0
+0.2
Vdc
External video crosstalk
AUXC
4.2 MHz, 1Vp-p
60
dB
Internal video output level
INTO
93 dB, 87.5% Video MOD
0.1
0.0
+0.1
Vp-p
[SIF Block]
FM detector output voltage
SOADJ
464
474
484
mVrms
FM limiting sensitivity
SLS
Output at 3 dB
50
dB
FM detector output bandwidth
SF
Output at 3 dB
50
100 k
Hz
FM detector output total
STHD
FM = 25 kHz
0.5
%
harmonic distortion
AM rejection ratio
SAMR
AM = 30 %
40
dB
SIF signal-to-noise ratio
SSN
60
dB
[Audio Block]
Maximum gain
AGMAX
1 kHz
2.5
0.0
+2.5
dB
Adjustment range
ARANGE
60
67
dB
Frequency characteristics
AF
20 kHz
3.0
+3.0
dB
Muting
AMUTE
20 kHz
75
dB
Total harmonic distortion
ATHD
1 kHz, 400 m Vrms, Vo1: MAX
0.5
dB
Signal-to-noise ratio
ASN
DIN.Audio
65
75
dB
[Chroma Block]
ACC amplitude characteristics 1
ACCM1
Input: +6 dB/0 dB, 0 dB = 40 IRE
0.8
1.0
1.2
times
ACC amplitude characteristics 2
ACCM2
Input: 14 dB/0 dB
0.7
1.0
1.1
times
B-Y/Y amplitude ratio
CLRBY
100
125
140
%
Color control characteristics 1
CLRMN
Color MAX/NOM
1.6
1.8
2.1
times
Color control characteristics 2
CLRMM
Color MAX/MIN
33
40
50
dB
Continued on next page.
Continued from preceding page.
No. 5844-3/27
LA76070
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Color control sensitivity
CLRSE
1
2
4
%/bit
Tint center
TINCEN
TINT NOM
15
3
deg
Tint control maximum
TINMAX
TINT MAX
30
45
60
deg
Tint control minimum
TINMIN
TINT MIN
60
45
30
deg
Tint control sensitivity
TINSE
0.7
2.0
deg/bit
Demodulator output ratio R-Y/B-Y
RB
0.75
0.85
0.95
Demodulator output ratio G-Y/B-Y
GB
0.28
0.33
0.38
Demodulator angle B-Y/R-Y
ANGBR
92
99
107
deg
Demodulator angle G-Y/B-Y
ANGGB
227
237
247
deg
Killer operating point
KILL
0 dB = 40 IRE
42
37
30
dB
Chrominance VCO free-running frequency
CVCOF
Deviation from 3.579545 MHz
350
+350
Hz
Chrominance pull-in range (+)
PULIN+
350
Hz
Chrominance pull-in range ()
PULIN
350
Hz
Auto-flesh characteristic 73
AF 073
5
10
20
deg
Auto-flesh characteristic 118
AF 118
7
0
+7
deg
Auto-flesh characteristic 163
AF 163
20
10
5
deg
[Video Block]
Overall video gain
CONT63
10
12
14
dB
(Contrast set to maximum)
Contrast adjustment characteristic
CONT32
7.5
6.0
4.5
dB
(Normal/maximum)
Contrast adjustment characteristic
CONT0
17
14
11
dB
(Minimum/maximum)
Video frequency characteristic
Yf0
6.0
3.5
0.0
dB
Trap & D = 0
Chrominance trap level
Ctrap
20
dB
Trap & D = 1
DC propagation
ClampG
95
100
105
%
Y delay, f0 = 1
YDLY
430
ns
Maximum black stretching gain
BKSTmax
6
13
20
IRE
(normal)
Sharp16
4
6
8
dB
Sharpness adjustment range (max)
Sharp31
9.0
11.5
14.0
dB
(min)
Sharp0
6.0
3.5
1.0
dB
Horizontal/vertical blanking output level
RGBBLK
1.4
1.6
1.8
V
[OSD Block]
OSD fast switch threshold
FSTH
0.9
1.2
1.7
V
Red RGB output level
ROSDH
220
250
280
IRE
Green RGB output level
GOSDH
220
250
280
IRE
Blue RGB output level
BOSDH
220
250
280
IRE
Analog OSD R output level
RRGB
1.5
1.9
2.3
Ratio
gain matching
Linearity
LRRGB
45
50
60
%
Analog OSD G output level
GRGB
1.5
1.9
2.3
Ratio
gain matching
Linearity
LGRGB
45
50
60
%
Analog OSD B output level
BRGB
1.5
1.9
2.3
Ratio
gain matching
Linearity
LBRGB
45
50
60
%
[RGB Output (cutoff and drive) Block]
Brightness control (normal)
BRT64
2.1
2.65
3.2
V
High brightness (maximum)
BRT127
15
20
25
IRE
Low brightness (minimum)
BRT0
25
20
15
IRE
Continued on next page.
Continued from preceding page.
No. 5844-4/27
LA76070
Parameter
Symbol
Conditions
Ratings
Unit
min
typ
max
Cutoff control
(minimum)
Vbias0
2.1
2.65
3.2
V
(Bias control)
(maximum)
Vbias127
2.45
3.0
3.55
V
Resolution
Vbiassns
4
mV/Bit
Maximum output
RBout127
2.9
Vp-p
Drive adjustment
Gout127
2.4
Vp-p
Output attenuation
RBout0
7
9
11
dB
[Deflection Block]
Sync separator sensitivity
Ssync
3
8
13
IRE
Horizontal free-running frequency
fH
15600
15734
15850
Hz
deviation
Horizontal pull-in range
fH PULL
400
Hz
Horizontal output pulse saturation
V Hsat
0
0.06
0.4
V
voltage
Horizontal output pulse phase
HPHCEN
9.5
10.5
11.5
s
Horizontal position adjustment range
HPHrange
4 bits
2
s
Horizontal position adjustment
HPHstep
530
ns
maximum variability
X-ray protection circuit operating
VXRAY
0.54
0.64
0.74
V
voltage
[Vertical screen Size Adjustment]
Vertical ramp output amplitude @32
Vsize32
VSIZE: 100000
0.47
0.82
1.17
Vp-p
Vertical ramp output amplitude @0
Vsize0
VSIZE: 000000
0.13
0.48
0.83
Vp-p
Vertical ramp output amplitude @63
Vsize63
VSIZE: 111111
0.80
1.15
1.50
Vp-p
[Vertical screen Position Adjustment]
Vertical ramp DC voltage @32
Vdc32
VDC: 100000
3.6
3.8
4.0
Vdc
Vertical ramp DC voltage @0
Vdc0
VDC: 000000
3.2
3.4
3.6
Vdc
Vertical ramp DC voltage @63
Vdc63
VDC: 111111
4.0
4.2
4.4
Vdc
LA76070 BUS: Initial Conditions
No. 5844-5/27
LA76070
Initial test conditions
Register
T Enable
0 HEX
Video Mute
1 HEX
Sync Kill
0 HEX
AFC Gain
0 HEX
Horizontal Phase
4 HEX
IF AGC SW
0 HEX
AFT Defeat
0 HEX
RF AGC Delay
20 HEX
Initial test conditions
(continued)
Register
Video SW
0 HEX
PLL Tuning
40 HEX
Audio Mute
1 HEX
APC Det Adjust
20 HEX
V CD Mode
0 HEX
Vertical DC
20 HEX
Vertical Kill
0 HEX
Col Kill
0 HEX
Vertical Size
20 HEX
Red Bias
00 HEX
Green Bias
00 HEX
Blue Bias
00 HEX
Blanking Defeat
0 HEX
Red Drive
7F HEX
Blue Drive
7F HEX
Color Difference Mode Enable
0 HEX
Brightness Control
40 HEX
Contrast Test Enable
0 HEX
Contrast Control
40 HEX
Trap & Delay Enable SW
0 HEX
Auto Flesh
0 HEX
Black Stretch Defeat
0 HEX
Sharpness Control
10 HEX
Tint Test Enable
0 HEX
Tint Control
40 HEX
Color Test Enable
0 HEX
Color Control
40 HEX
Vertical Test
0 HEX
Video Level
4 HEX
FM Level
10 HEX
BNI Enable
0 HEX
Audio SW
0 HEX
Volume Control
00 HEX
No. 5844-6/27
LA76070
LA76070 BUS: Control Register Descriptions
Control register descriptions
Register name
Bits
General descriptions
T Enable
1
Disable the Test SW & enable Video Mute SW
Video Mute
1
Disable video outputs
Sync Kill
1
Force free-run mode
AFC Gain
1
Select horizontal first loop gain
Horizontal Phase
3
Align sync to flyback phase
IF AGC SW
1
Disable IF and RF AGC
AFT Defeat
1
Disable AFT output
RF AGC Delay
6
Align RF AGC threshold
Video SW
1
Select Video Signal (INT/EXT)
PLL Tuning
7
Align IF VCO frequency
Audio Mute
1
Disable audio outputs
APC Det Adjust
6
Align AFT crossover
V Count Down Mode
1
Select vertical countdown mode
Vertical DC
6
Align vertical DC bias
Vertical Kill
1
Disable vertical output
Color Kill
1
Enable Color Killer
Vertical Size
6
Align vertical amplitude
Red Bias
7
Align Red OUT DC level
Green Bias
7
Align Green OUT DC level
Blue Bias
7
Align Blue OUT DC level
Blanking Defeat
1
Disable RGB output blanking
Red Drive
6
Align Red OUT AC level
Drive Test
1
Enable drive DAC test mode
Blue Drive
6
Align Blue OUT AC level
Color Difference Mode Enable
1
Enable color difference mode
Brightness Control
7
Customer brightness control
Contrast Test
1
Enable Contrast DAC test mode
Contrast Control
7
Customer Contrast control
Trap & Delay-SW
1
Select luma filter mode
Auto Flesh Enable
1
Enable autoflesh function
Black Stretch Defeat
1
Disable black stretch
Sharpness Control
5
Customer sharpness control
Tint Test
1
Enable tint DAC test mode
Tint Control
7
Customer tint control
Color Test
1
Enable color DAC test mode
Color Control
7
Customer color control
Vertical Test
3
Select vertical DAC test modes
Video Level
3
Align IF video level
FM Level
5
Align WBA output level
BNI Enable
1
Enable black noise inverter
Audio SW
1
Select Audio Signal (INT/EXT)
Volume Control
6
Customer volume control
No. 5844-7/27
LA76070
LA76070 BUS: Control Register Truth Table
Control register truth table
Register name
0 HEX
1 HEX
T Enable
Test Enable
Test Disable
Audio Mute
Active
Mute
Video Mute
Active
Mute
Sync Kill
Sync active
Sync Killed
AFC Gain
Slow
Fast
IF AGC SW
AGC active
AGC Defeat
AFT Defeat
AFT active
AFT Defeat
BNI Enable
BNI active
BNI Defeat
Count Down Mode
Standard
Non-Stand
Vertical Kill
Vrt active
Vrt Killed
F0 Select
3.58 trap
8.00 APF
Auto Flesh Enable
AF Off
AF On
Overload Enable
Ovld Off
Ovld On
Tint DAC Test
Normal
Test Mode
Color DAC Test
Normal
Test Mode
Contrast DAC Test
Normal
Test Mode
Drive DAC Test
Normal
Test Mode
Black Stretch Defeat
Blk Str On
Blk Str Off
Blanking Defeat
Blanking
No Blank
Color Diff Mode Enable
RGB Mode
C Diff Mode
Vertical Test
Normal
Ver Size Test
No. 5844-8/27
LA76070
LA76070 Bit Map (`96.08.01)
IC address: BAH (101111010)
Sub address
MSB
DATA
LSB
D0....D7
DA0
DA1
DA2
DA3
DA4
DA5
DA6
DA7
$00
*
*
*
*
T_Enable
*
Vid_Mute
Sync_Kill
(tr0)
0
1
0
$01
*
*
*
*
AFC Gain
H_Phase
(tr1)
0
1
0
0
$02
IFAGC SW
AFT DEF
RF_AGC_Delay
(tr2)
0
0
1
0
0
0
0
0
$03
VIDEO SW
PLL TUNING
(tr3)
0
1
0
0
0
0
0
0
$04
*
Aud_Mute
APC DET ADJUST
(tr4)
1
1
0
0
0
0
0
$05
V CD MODE
*
Ver_dc
(tr5)
0
1
0
0
0
0
0
$06
Ver_kill
Col_kill
Ver_Size
(tr6)
0
0
1
0
0
0
0
0
$07
*
R_Bias
(tr7)
0
0
0
0
0
0
0
$08
*
G_Bias
(tr8)
0
0
0
0
0
0
0
$09
*
B_Bias
(tr9)
0
0
0
0
0
0
0
$0A
BLK_DEF
R_Drive
(tr10)
0
1
1
1
1
1
1
1
$0B
Drv_Test
B_Drive
(tr11)
0
1
1
1
1
1
1
1
$0C
C_Diff
Bright
(tr12)
0
1
0
0
0
0
0
0
$0D
Cot_Test
Contrast
(tr13)
0
1
0
0
0
0
0
0
$0E
Trap & D_SW
A Fresh
Black ST
Sharpness
(tr14)
0
0
0
1
0
0
0
0
$0F
Tint_Test
Tint
(tr15)
0
1
0
0
0
0
0
0
$10
Col_Test
Color
(tr16)
0
1
0
0
0
0
0
0
$11
*
*
*
*
*
V_test
(tr17)
0
0
0
$12
VIDEO LEVEL
FM LEVEL
(tr18)
1
0
0
1
0
0
0
0
$13
N/I SW
AUDIO SW
VOLUME
(tr19)
0
0
0
0
0
0
0
0
Measurement Conditions
at Ta = 25C, V
CC
= V4 = V26 = 7.6 V, I
CC
= I
21
= 19 mA
No. 5844-9/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement method
Bus conditions
point
[Circuit Voltages and Currents]
Horizontal power supply voltage
HV
CC
Apply a 19mA current to pin 21 and
Initial conditions
measure the pin 21 voltage at that time
I4
Apply a voltage of 7.6 V to pin 4 and
IF power supply current (pin 4)
(IFI
CC
)
No signal
measure (in mA) the DC current that flows into the IC.
Initial conditions
(Apply 5 V to the IF AGC.)
Video/vertical power supply current
I26
Apply a voltage of 7.6 V to pin 26 and
Initial conditions
(pin 26)
(DEFI
CC
)
measure (in mA) the DC current that flows into the IC
21
4
26
VIF Block Input Signals and Measurement Conditions
1. All input signals are applied to PIF IN (pin 10) as shown in the measurement circuit diagrams.
2. The input signal voltage values are all the value of VIF IN (pin 10) as shown in the measurement circuit diagrams.
3. The table below lists the input signals and their levels.
No. 5844-10/27
LA76070
Input signal
Waveform
Condition
SG1
45.75 MHz
SG2
42.17 MHz
SG3
41.25 MHz
SG4
Variable frequency
SG5
45.75 MHz
87.5 % video modulation
10-step staircase waveform
(Subcarrier: 3.58 MHz)
SG6
45.75 MHz
87.5 % video modulation
Sweep signal
(APL: 50 IRE
Sweep signal level: 40 IRE)
SG7
45.75 MHz
87.5 % video modulation
Flat field signal
Item
Measurement point
Input signal
Adjustment
APC DAC
No signal, IF.AGC.DEF = 1
Set up the DAC value so that the pin 13 DC voltage is as close to 3.8 V as possible
PLL DAC
SG1, 93 dB
Set up the DAC value so that the pin 13 DC voltage is as close to 3.8 V as possible
Video
SG7, 93 dB
Set up the DAC value so that the pin 45 output level is as close to 2.0 V p-p as
possible
4. Perform the following D/A converter adjustments in the order listed before testing.
13
13
45
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
[VIF Block]
AFT output voltage with no signal
VAFTn
No signal
Measure the pin 13 DC voltage when
After performing the adjustments
IF.AGC. DEF is "1"
described in section 4
Video output voltage with no signal
VOn
No signal
Measure the pin 45 DC voltage when
After performing the adjustments
IF.AGC. DEF is "1"
described in section 4
Connect an oscilloscope to pin 45 and modify
the SG4 signal to be a frequency above 45.75
MHz so that the PLL circuit becomes unlocked.
(Beating will occur in this state.) Gradually
SG4
lower the SG4 frequency and measure the
After performing the adjustments
APC pull-in range (U), (L)
fPU, fPL
93 dB
frequency at which the PLL circuit locks.
described in section 4
Similarly, modify the frequency to a value
below 45.75 MHz so that the PLL circuit
becomes unlocked. Gradually raise the SG4
frequency and measure the frequency at which
the PLL circuit locks.
Maximum RF AGC voltage
V
RFH
SG1
Set the RF AGC DAC to 0 and measure the pin After performing the adjustments
91 dB
6 DC voltage
described in section 4
Minimum RF AGC voltage
V
RFL
SG1
Set the RF AGC DAC to 63 and measure the
After performing the adjustments
91 dB
pin 6 DC voltage
described in section 4
RF AGC Delay Pt
Set the RF AGC DAC to 0 and determine the
After performing the adjustments
(@DAC = 0)
RFAGC0
SG1
input level such that the pin 6 DC voltage
described in section 4
becomes 3.8 V 0.5 V
RF AGC Delay Pt
Set the RF AGC DAC to 63 and determine the
After performing the adjustments
(@DAC = 63)
RFAGC63
SG1
input level such that the pin 4 DC voltage
described in section 4
becomes 3.8 V 0.5 V
SG4
Set the SG4 signal frequency to 44.75 MHz
After performing the adjustments
Maximum AFT output voltage
VAFTH
93 dB
and input that signal. Measure the pin 13 DC
described in section 4
voltage at that time.
SG4
Set the SG4 signal frequency to 46.75 MHz
After performing the adjustments
Minimum AFT output voltage
VAFTL
93 dBz
and input that signal. Measure the pin 13 DC
described in section 4
voltage at that time.
Modify the SG4 frequency to determine the
AFT detection sensitivity
VAFTS
SG4
frequency deviation (
f) such that the pin
After performing the adjustments
93 dBz
13 DC voltage changes from 2.5 V to 5.0 V.
described in section 4
VAFTS = 2500/
f [mV/kHz]
Video output amplitude
VO
SG7
Observe pin 45 with an oscilloscope and
After performing the adjustments
93 dB
measure the p-p value of the waveform
described in section 4
Synchronization signal tip level
VOtip
SG1
Measure the pin 45 DC voltage
After performing the adjustments
93 dB
described in section 4
After performing the adjustments
Input sensitivity
Vi
SG7
described in section 4
SG7
After performing the adjustments
Video-to-sync ratio (@ 100 dB)
V/S
100 dB
described in section 4
Differential gain
DG
SG5
Measure pin 45 with a vectorscope
After performing the adjustments
93 dB
described in section 4
Differential phase
DP
SG5
Measure pin 45 with a vectorscope
After performing the adjustments
93 dB
described in section 4
Pass the noise voltage that occurs on pin
SG1
45 through a 10 kHz to 4 MHz bandpass filter,
After performing the adjustments
Video signal-to-noise ratio
S/N
93 dB
measure that voltage (Vsn) with an rms
described in section 4
voltmeter. Use that value to calculate 20
log
(1.43/Vsn).
Input SG1 at 93 dB and measure the pin
12 DC voltage (V12).Mix three signals: SG1 at
SG1
87 dB, SG2 at 82 dB, and SG3 at 63 dB,
920 kHz beat level
I920
SG2
and input that signal to VIF IN. Now, apply the
After performing the adjustments
SG3
V12 voltage to pin 12 using an external power
described in section 4
supply. Measure the difference between the
3.58 MHz component and the 920 kHz
component with a spectrum analyzer.
No. 5844-11/27
LA76070
13
45
45
6
6
6
6
13
13
13
45
45
45
45
45
45
45
45
Observe pin 45 with an oscilloscope and measure
the peak-to-peak value of the waveform. Next,
gradually lower the input level to determine the input
level such that the output becomes 3 dB below the
video signal amplitude VO.
Observe pin 45 with an oscilloscope and
determine the value of the Vy/Vs ratio by
measuring the peak-to-peak value of the sync
waveform (Vs) and the peak-to-peak value of the
luminance signal (Vy).
Video Switch Block - Input Signals and Measurement Conditions
1. Unless otherwise indicated, these measurements are to be performed with no signal applied to PIF IN (pin 10) and
with the D/A converter IF.ACG.SW set to "1".
2. The table below lists the input signals and their labels.
No. 5844-12/27
LA76070
Input signal
Waveform
Condition
SG8
10-step staircase waveform
1 V p-p
SG9
4.2 MHz
1 Vp-p
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
[VIF Block]
External video gain
AUXG
Pin 1
VIDEO.SW = "1"
SG8
Observe pin 42 with an oscilloscope and
measure the synchronizing signal tip voltage
External video sync signal tip
AUXS
Pin 1
in the waveform.
VIDEO.SW = "1"
voltage
SG8
Determine the voltage difference between this
measured value and synchronizing signal tip
level (VOtip) measured in the VIF block.
Pin 1
External video crosstalk
AUXC
SG8
VIDEO.SW = "0"
Pin 10
SG7
Internal video output level
INT0
(VIF block)
93 dB
42
42
42
42
Observe pin 42 with an oscilloscope, measure
the peak-to-peak value of the waveform, and
perform the following calculation.
AUXG = 20
log (Vp-p) [dB]
Measure the 4.2 MHz component in the pin 42
signal with a spectrum analyzer.Convert this
measurement to a V peak-to-peak value and
perform the following calculation.
AUXG = 20
log (1.4/Vp-p) [dB]
Observe pin 45 with an oscilloscope and
measure the peak-to-peak value of the
waveform. Determine the difference between
this measured value and the video output
amplitude (VO) measured in the VIF block.
After performing the adjustments
described in section 4
IF. AGC. SW = "0"
VIDEO. SW = "0"
SIF Block (FM Block) - Input Signals and Measurement Conditions
Unless otherwise indicated, set up the following conditions for each of the following measurements.
1. Bus control condition: IF.AGC.DEF = 1
2. SW: IF1 = off
3. Apply the input signal to pin 49 and use a 4.5 MHz carrier signal.
Audio Block - Input Signals and Test Conditions
No. 5844-13/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
Adjust the DAC (FM.LEVEL) so that the pin 7
90 dB,
FM detector output 1kHz component is as
FM detector output voltage
SOADJ
fm = 1 kHz,
close to 474 mV rms as possible, and
FM = 25 kHz measure the output at that time in mV rms.
Record this measurement as SV1.
fm = 1 kHz,
Determine the input level (in dB) such that
FM limiting sensitivity
SLS
FM = 25 kHz
the pin 7 FM detector output 1kHz component
FM.LEVEL = adjusted value
is 3 dB down from the SV1 value
90 dB,
Determine the modulation frequency
FM detector output bandwidth
SF
FM = 25 kHz
bandwidth (Hz) that is 3 dB or higher relative
FM.LEVEL = adjusted value
to the pin 7 FM detector output SV1 value
FM detector output total harmonic
90 dB,
Determine the total harmonic distortion in the
distortion
STHD
fm = 1 kHz,
pin 7 FM detector output 1kHz component
FM.LEVEL = adjusted value
FM = 25 kHz
Measure the pin 7 FM detector output 1kHz
90 dB,
component (in mV rms).
AM rejection ratio
SAMR
fm = 1 kHz,
Record this measured value as SV2 and
FM.LEVEL = adjusted value
AM = 30%
perform the following calculation.
SAMR = 20
log (SV1/SV2) [dB]
Set SW1:IF1 to the "ON"
90 dB,
Measure the pin 7 noise level (in mV rms).
SIF signal-to-noise ratio
SSN
CW
Record this measured value as SV3 and
FM.LEVEL = adjusted value
perform the following calculation.
SSN = 20
log (SV1/SV3) [dB]
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
Measure the output pin 1kHz component
Maximum gain
AGMAX
1 kHz, CW
(V1: mV rms) and perform the following
VOLUME = "111111"
400m Vrms
calculation.
AUDIO.MUTE = "0"
AGMAX = 20
log (V1/400) [dB]
Measure the output pin 1kHz component
Variability range
ARANGE
1 kHz, CW
(V2: mV rms) and perform the following
VOLUME = "000001"
400m Vrms
calculation.
AUDIO.MUTE = "0"
AGMAX = 20
log (V1/V2) [dB]
Measure the output pin 20kHz component
Frequency characteristics
AF
20 kHz, CW
(V3: mV rms) and perform the following
VOLUME = "111111"
400m Vrms
calculation.
AUDIO.MUTE = "0"
AF = 20
log (V3/V1) [dB]
Measure the output pin 20kHz component
Muting
AMUTE
20 kHz, CW
(V4: mV rms) and perform the following
VOLUME = "000000"
400m Vrms
calculation.
AUDIO.MUTE = "0"
AMUTE = 20
log (V3/V4) [dB]
Total harmonic distortion
ATHD
1 kHz, CW
Determine the total harmonic distortion in
VOLUME = "111111"
400m Vrms
output pin 1kHz component
AUDIO.MUTE = "0"
Measure the noise level (DIN.AUDIO) on
Signal-to-noise ratio
ASN
No signal
the output pin (V5: mV rms) and perform the
VOLUME = "111111"
following calculation.
AUDIO.MUTE = "0"
ASN = 20
log (V1/V5) [dB]
7
7
7
7
7
7
51
51
51
51
51
51
Chrominance Block - Input Signals and Measurement Conditions
Unless otherwise indicated, set up the following conditions for each of the following measurements.
1. VIF and SIF blocks: No signal
2. Deflection block: Input a horizontal and vertical composite synchronizing signal, and assure that the deflection block
is locked to the synchronizing signal. (Refer to the "Deflection Block - Input Signals and Measurement Conditions"
section.)
3. Bus control conditions: All conditions set to the initial conditions unless otherwise specified.
4. Y input: No signal
5. C input: The C1IN input (pin 40) must be used.
6. The following describes the method for calculating the demodulation angle.
B-Y axis angle = tan-1 (B (0)/B (270) + 270
R-Y axis angle = tan-1 (R (180)/R (90) + 90
G-Y axis angle = tan-1 (G (270)/G (180) + 180
7. The following describes the method for calculating the AF angle.
BR ... The ratio between the B-Y and R-Y demodulator outputs.
...... ANGBR: The B-Y/R-Y demodulation angle
R-Y/B-Y
BR-Cos
AFXXX = tan-1
Sin
8. Attach a TV crystal externally to pin 15.
No. 5844-14/27
LA76070
R-Y axis
[
]
G-Y axis
B-Y axis
No. 5844-15/27
LA76070
Chrominance Input Signals
C-1
X IRE signal (L-X)
C-2
C-3
C-4
C-5
(However, if a frequency is specified that frequency must be used.)
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus and other conditions
point
[Chroma Block]
Bout
C-1
Measure the output amplitudes when the
ACC amplitude characteristic 1
ACCM1
0 dB
chrominance signal input is 0 dB and when
+6 dB
that input is +6 dB and calculate the ratio.
ACCM1 = 20
log (+6 dBdata/0dBdata)
Bout
Measure the output amplitude when the
ACC amplitude characteristic 2
ACCM2
C-1
chrominance signal input is 14 dB and
14 dB
calculate the ratio.
ACCM2 = 20
log (14 dBdata/0dBdata)
YIN: L77
C-1:
Measure the Y output level
No signal
(Record this measurement as V1)
B-Y/Y amplitude ratio
CLRBY
Next, input a signal to CIN, and (with YIN a
sync-only signal) measure the output level.
C-2
(Record this measurement as V2)
Calculate CLRBY from the following formula.
CLRBY = 100
(V2/V1) + 15%
Measure V1: the output amplitude when the
TR24:
color control is maximum, and V2: the output
Saturation
Color control characteristic 1
CLRMN
C-3
amplitude when the color control is nominal.
01111111
Calculate CLRMN as V1/V2.
Saturation
01000000
Measure V3: the output amplitude when the
TR28:
Color control characteristic 2
CLRMN
C-3
color control is minimum. Calculate CLRMM
Saturation
as CLRMN = 20
log (V1/V3).
00000000
Measure V4: the output amplitude when the
TR24:
color control is 90, and V5: the output amplitude Saturation
Color control sensitivity
CLRSE
C-3
when the color control is 38. Calculate CLRSE
01011010
from the following formula.
Saturation
CLRSE = 100
(V4 V5)/(V2
52)
00100110
Tint center
TINCEN
C-1
Measure all sections of the output waveform
TR23: Tint
and calculate the B-Y axis angle
00111111
Measure all sections of the output waveform,
Tint control maximum
TINMAX
C-1
calculate the B-Y axis angle, and calculate
TR23: Tint
TINMAX from the following formula.
01111111
TINMAX = <the B-Y axis angle> TINCEN
Measure all sections of the output waveform,
Tint control minimum
TINMIN
C-1
calculate the B-Y axis angle, and calculate
TR23: Tint
TINMIN from the following formula.
00000000
TINMIN = <the B-Y axis angle> TINCEN
Measure A1: the angle when the tint control is 85,
TR23: Tint
Tint control sensitivity
TINSE
C-1
and A2: the angle when the tint control is 42,
01010101
and calculate TINSE from the following formula.
00101010
TINSE = (A1 A2) /43
Demodulation output ratio
RB
C-3
Measure Vb: the B
OUT
output amplitude,
TR24:
R-Y/B-Y
and Vr: the R
OUT
output amplitude.
Saturation
Determine RB = Vr/Vb.
01000000
Demodulation output ratio
Measure Vg: the G
OUT
output amplitude and
TR24:
G-Y/B-Y
GB
C-3
determine GB = Vg/Vb
Saturation
01000000
No. 5844-16/27
LA76070
Continued on next page.
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30
30
30
30
29
28
Continued from preceding page.
No. 5844-17/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus and other conditions
point
Measure the B
OUT
and R
OUT
output levels,
Demodulation angle B-Y/R-Y
ANGBR
C-1
calculate the angles of the B-Y and R-Y axes,
and determine ANGBR as
<the R-Y angle> <the B-Y angle>.
Measure the G
OUT
output level, calculate the
Demodulation angle B-Y/G-Y
ANGBG
C-1
angle of the G-Y axis, and determine ANGBG
as <the G-Y angle> <the B-Y angle>
Gradually lower the input signal level, and
Killer operating point
KILL
C-3
measure the input signal level at the point the
output level falls under 150 mV p-p
Chrominance VCO free-running
CIN
Measure the oscillator frequency f, and
frequency
CVCOF
No signal
determine CVCOF from the following formula.
CVCOF = f 3579545 (Hz)
Gradually lower the input signal subcarrier
Chrominance pull-in range (+)
PULIN +
C1
frequency starting from 3.57545 MHz +
2000 Hz, and measure the frequency when
the output waveform locks
Gradually raise the input signal subcarrier
Chrominance pull-in range ()
PULIN
C1
frequency starting from 3.57545 MHz
2000 Hz, and measure the frequency when the
output waveform locks
With Auto Flesh = 0, measure the level that
corresponds to 73 for the B
OUT
and R
OUT
TR22:
output waveforms, and calculate the angle
Auto flesh:
Auto flesh characteristic 73
AF073
C4
AF073A.
0
*******
With Auto Flesh = 1, determine the angle
TR22:
AF073B in the same way.
Auto flesh:
Calculate AF073 from the following formula.
1
*******
AF073 = AF073B AF073A
With Auto Flesh = 0, measure the level that
corresponds to 118 for the B
OUT
and R
OUT
TR22:
output waveforms, and calculate the angle
Auto flesh:
Auto flesh characteristic 118
AF118
C4
AF118A.
0
*******
With Auto Flesh = 1, determine the angle
TR22:
AF118B in the same way.
Auto flesh:
Calculate AF118 from the following formula.
1
*******
AF118 = AF118B AF118A
With Auto Flesh = 0, measure the level that
corresponds to 163 for the B
OUT
and R
OUT
TR22:
output waveforms, and calculate the angle
Auto flesh:
Auto flesh characteristic 163
AF163
C4
AF163A.
0
*******
With Auto Flesh = 1, determine the angle
TR22:
AF163B in the same way.
Auto flesh:
Calculate AF163 from the following formula.
1
*******
AF163 = AF163B AF163A
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28
Video Block - Input Signals and Measurement Conditions
C IN input signal * chrominance burst signal: 40 IRE
Y IN input signal 100 IRE: 714 mV
*0 IRE signal (L-0): Standard NTSC synchronizing signal
No. 5844-18/27
LA76070
XIRE signal (L-X)
CW signal (L-CW)
Black stretch 0 IRE signal (L-BK)
R/G/B input signal
RGB input signal 1 (O-1)
RGB input signal 2 (O-2)
No. 5844-19/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions and
point
input signals
[Video Block]
Overall video gain
Measure the output signal 50 IRE amplitude
Contrast max
(contrast: maximum)
CONT127
L50
(CNTHB V p-p) and calculate CONT127 as
1111111
20
log (CNTHB/0.357).
Contrast adjustment
Measure the output signal 50 IRE amplitude
Contrast center
characteristics
CONT63
L50
(CNTCB V p-p) and calculate CONT63 as
0111111
(normal/maximum)
20
log (CNTCB/CNTHB).
Contrast adjustment
Measure the output signal 50 IRE amplitude
Contrast min
characteristics
CONT0
L50
(CNTLB V p-p) and calculate CONT0 as
0000000
(minimum/maximum)
20
log (CNTLB/CNTHB).
Video frequency characteristics
Brightness min
L0
Measure the output signal 0 IRE DC level
0000000
(BRTPL V)
Contrast max
DC propagation
ClampG
1111111
Measure the output signal 0 IRE DC level
Brightness min
L100
(DRVPH V) and the 100 IRE amplitude (DRVH
0000000
V p-p), and calculate ClampG as
Contrast max
100
(1 + (DRVPH - BRTPL)/DRVH).
1111111
Y delay
YDLY
Measure the output signal 0 IRE DC level at
point A when the black stretch function is
BKST defeat on (1)
defeated (off). Record this value as BKST1 (V).
Maximum black stretching gain
BKSTmax
LBK
Measure the output signal 0 IRE DC level at
point A when the black stretch is enabled (on).
BKST defeat off (0)
Record this value as BKST2 (V).
Calculate BKSTmax from the following formula.
BKSTmax = 2
50
(BKST1 BKST2)/ CNTHB
LCW
Sharpness (peaking)
LCW
LCW
Horizontal/vertical blanking
RGB
BLK
L100
Measure the output signal blanking period DC
output level
level. Record that value as RGB
BLK
V.
30
30
30
30
30
30
30
30
30
No. 5844-20/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions and
point
input signals
[OSD Block]
L0
Apply a voltage to pin 36 and determine the pin
OSD fast switch threshold
FS
TH
O2
36 voltage when the output signal switches to
Pin 35: Apply O-2
the OSD signal
Red RGB output level
R
OSDH
L50
Measure the output signal 50 IRE amplitude
(CNTCR V p-p)
L0
Measure the OSD output amplitude
Pin 36: 2.0 V
O2
(OSDHR V p-p)
Pin 33: Apply O-2
Calculate R
OSDH
as 50
(OSDHR/CNTCR)
Green RGB output level
G
OSDH
L50
Measure the output signal 50 IRE amplitude
(CNTCG V p-p)
L0
Measure the OSD output amplitude
Pin 36: 2.0 V
O2
(OSDHG V p-p)
Pin 34: Apply O-2
Calculate G
OSDH
as 50
(OSDHG/CNTCG)
Blue RGB output level
B
OSDH
L50
Measure the output signal 50 IRE amplitude
(CNTCB V p-p)
L0
Measure the OSD output amplitude
Pin 36: 2.0 V
O2
(OSDHB V p-p)
Pin 35: Apply O-2
Calculate B
OSDH
as 50
(OSDHB/CNTCB)
Measure the amplitude of points A (the 0.35 V
L0
section in the input signal O-1) and B (the 0.7 V
Pin 36: 2.0 V
Analog OSD R output level
O1
section in the input signal O-1) in the output
Pin 33: Apply O-1
signal and record those values as RGBLR and
RGBHR V p-p, respectively
Gain matching
R
RGB
Calculate R
RGB
as RGBLR/CNTCR
Linearity
LR
RGB
Calculate LR
RGB
as 100
(RGBLR/RGBHR)
Measure the amplitude of points A (the 0.35 V
L0
section in the input signal O-1) and B (the 0.7 V
Pin 36: 2.0 V
Analog OSD G output level
O1
section in the input signal O-1) in the output
Pin 34: Apply O-1
signal and record those values as RGBLG and
RGBHG V p-p, respectively
Gain matching
G
RGB
Calculate G
RGB
as RGBLG/CNTCG
Linearity
LG
RGB
Calculate LG
RGB
as 100
(RGBLG/RGBHG)
Measure the amplitude of points A (the 0.35 V
L0
section in the input signal O-1) and B (the 0.7 V
Pin 36: 2.0 V
Analog OSD B output level
O1
section in the input signal O-1) in the output
Pin 35: Apply O-1
signal and record those values as RGBLB and
RGBHB V p-p, respectively
Gain matching
B
RGB
Calculate B
RGB
as RGBLB/CNTCB
Linearity
LB
RGB
Calculate LB
RGB
as 100
(RGBLB/RGBHB)
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions and
point
input signals
[RGB Output Block] (Cutoff and Drive Blocks)
Measure the output signal 0 IRE DC levels for
the R output (28), G output (29), and B output
Contrast max
BRT63
L0
(30). Record these values as BRTPCR,
1111111
Brightness control (normal)
BRTPCG, and BRTPCB V, respectively.
Calculate BRT63 as
(BRTPCR + BRTPCG + BRTPCB)/3
(max)
BRT127
Measure the output signal 0 IRE DC levels for
Brightness max
the B output (30). Record this value as BRTPHB. 1111111
Calculate BRT127 as
50
(BRTPHB BRTPCB)/CNTHB
(min)
BRT0
Measure the output signal 0 IRE DC levels for
Brightness min
the B output (30). Record this value as BRTPLB. 0000000
Calculate BRT0 as
50
(BRTPLB BRTPCB)/CNTHB
30
28
29
30
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29
30
30
29
28
30
No. 5844-21/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus and other conditions
point
[RGB Output Block] (Cutoff and Drive Blocks)
(minimum)
Vbias0
L50
Contrast max
1111111
(maximum)
Vbias127
R bias max
Bias (cutoff) control
1111111
G bias max
1111111
B bias max
1111111
Contrast max
1111111
R bias:
1010000
G bias:
1010000
B bias:
1010000
Contrast max
1111111
Bias (cutoff) control resolution
Vbiassns
R bias:
0110000
G bias:
0110000
B bias:
0110000
Contrast max
1111111
Vbiassns
*
= (BAS80
*
BAS48
*
)/32
Drive adjustment: Maximum output RGBout127
Contrast max
1111111
Brightness min
0000000
Output attenuation
RGBout0
Contrast max
L100
1111111
Brightness min
0000000
R drive min
0000000
B drive min
0000000
RGBout0
*
= 20
log (DRVH
*
/DRVL
*
)
28
29
30
28
29
30
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B
output (pin 30). Record these values as Vbias0
*
(V).Here,
*
is R, G, and B, respectively.
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B
output (pin 30). Record these values as
Vbias128
*
(V). Here,
*
is R, G, and B,
respectively.
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B
output (pin 30). Record these values as
BAS80
*.
Here,
*
is R, G, and B, respectively.
Measure the output signal 0 IRE DC levels for
the R output (pin 28), G output (pin 29), and B
output (pin 30). Record these values as
BAS48
*
(V).
Here,
*
is R, G, and B, respectively.
Measure the output signal 100 IRE amplitudes
for the R output (pin 28), G output (pin 29), and
B output (pin 30). Record these values as
DRVH
*
(V p-p).
Here,
*
is R, G, and B, respectively.
Measure the output signal 100 IRE amplitudes
for the R output (pin 28), G output (pin 29), and
B output (pin 30). Record these values as
DRVL
*
(V p-p).
Here,
*
is R, G, and B, respectively.
Deflection Block - Input Signals and Measurement Conditions
Unless otherwise indicated, set up the following conditions for each of the following measurements.
1. VIF and SIF blocks: No signal
2. C input: No signal
3. SYNC input: Horizontal and vertical composite synchronizing signal (40 IRE and other conditions, such as timing,
must conform to the FCC broadcast standards.)
Caution: The burst and chrominance signals must not be below the pedestal level.
4. Bus control conditions: All conditions set to the initial conditions unless otherwise specified.
5. The delay between the rise of the horizontal output (the pin 23 output) and the rise of the F.B.P IN (the pin 24 input)
must be 9 s.
6. Unless otherwise specified, pin 25 (the X-ray protection circuit input) must be connected to ground.
Caution:
Perform the following operation if horizontal pulse output has stopped.
1. The bus data T_ENABLE bit must be temporarily set to 0 and then set to 1.
(If the X-ray protection circuit operates, an IC internal latch circuit will be set. To reset that latch circuit, the
T_ENABLE bit must be temporarily set to 0, even if there is no horizontal output signal being output.)
Notes on Video Muting
If horizontal pulse output has stopped, perform the operation described in item 1. above and then set the video mute bit
set to 0.
(This is because the video mute bit is forcibly set to the mute setting when the T_ENABLE bit is set to 0 or when the X-
ray protection circuit operates. This also applies when power is first applied.)
No. 5844-22/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
[Deflection Block]
SYNC IN:
Gradually lower the level of the synchronizing
horizontal and signal input to Y IN (pin 37) and measure the
Sync separator circuit sensitivity
Ssync
vertical
level of the synchronizing signal at the point
synchronizing synchronization is lost
signal
Connect a frequency counter to the pin 23
Horizontal free-running
SYNC IN:
output (Hout) and measure the horizontal free-
frequency deviation
fH
No signal
running frequency.
Calculate the deviation from the following formula.
fH = <measured value> 15.734 kHz
SYNC IN:
Monitor the horizontal synchronizing signal input
horizontal and
to Y IN (pin 37) and the pin 23 output (Hout),
Horizontal pull-in range
fH PULL
vertical
and measure the pull-in range by modifying the
synchronizing
horizontal synchronizing signal frequency
signal
SYNC IN:
Horizontal pulse output
horizontal and
Measure the voltage during the low-level period
saturation voltage
V Hsat
vertical
in the pin 23 horizontal output pulse
synchronizing
signal
37
23
37
23
No. 5844-23/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
Measure the delay between the rise of the pin
23 horizontal output pulse and the fall of the Y
IN horizontal synchronizing signal
SYNC IN:
Horizontal output pulse phase
HPHCEN
horizontal and
vertical
synchronizing
signal
Measure the delay between the rise of the pin
23 horizontal output pulse and the fall of the Y
IN horizontal synchronizing signal when
HPHASE is set to 0 and when it is set to 7,
and calculate the difference between those
SYNC IN:
measurements and HPH
CEN
Horizontal position adjustment
horizontal and
range
HPHrange
vertical
synchronizing
signal
Measure the delay between the rise of the pin
23 horizontal output pulse and the fall of the
SYNC IN horizontal synchronizing signal as
HPHASE is set to each value from 0 to 7, and
calculate the amount of the change at each step.
SYNC IN:
Find the step size with the largest change.
Horizontal position adjustment
horizontal and
maximum deviation
HPHstep
vertical
synchronizing
signal
SYNC IN:
Connect a DC voltage source to pin 25 and
X-ray protection circuit
horizontal and
gradually increase the voltage starting at 0 V.
operating voltage
V
XRAY
vertical
Measure the pin 25 DC voltage at the point that
synchronizing
the pin 23 horizontal pulse output stops.
signal
23
37
23
37
23
37
23
25
Hphase:
000
Hphase:
111
Hphase:
000
to
Hphase:
111
No. 5844-24/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
[Vertical screen Size Adjustment]
Monitor the pin 17 vertical ramp output and
measure the voltages at the line 22 and line 262.
Calculate Vsize32 from the following formula.
Vertical ramp output amplitude
Vsize32
@32
Monitor the pin 17 vertical ramp output and
measure the voltages at the line 22 and line 262.
Calculate Vsize32 from the following formula.
Vertical ramp output amplitude
Vsize0
@0
Monitor the pin 17 vertical ramp output and
measure the voltages at the line 22 and line 262.
Calculate Vsize32 from the following formula.
Vertical ramp output amplitude
Vsize63
@63
17
17
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
SYNC IN:
horizontal
and
vertical
synchronizing
signal
SYNC IN:
horizontal
and
vertical
synchronizing
signal
VSIZE:
0000000
VSIZE:
1111111
No. 5844-25/27
LA76070
Parameter
Symbol
Measurement
Input signal
Measurement procedure
Bus conditions
point
[Vertical screen Position Adjustment]
Monitor the pin 17 vertical ramp output and
measure the voltage at line 142
Vertical ramp DC voltage @32
Vdc32
Monitor the pin 17 vertical ramp output and
measure the voltage at line 142
Vertical ramp DC voltage @0
Vdc0
VDC: 0000000
Monitor the pin 17 vertical ramp output and
measure the voltage at line 142
Vertical ramp DC voltage @63
Vdc63
VDC: 1111111
17
17
17
SYNC IN:
horizontal
and
vertical
synchronizing
signal
SYNC IN:
horizontal
and
vertical
synchronizing
signal
SYNC IN:
horizontal
and
vertical
synchronizing
signal
No. 5844-26/27
LA76070
*
For adjusting the crystal oscillator
characteristic
This catalog provides information as of July, 1999. Specifications and information herein are subject to
change without notice.
PS No. 5844-27/27
LA76070
Specifications of any and all SANYO products described or contained herein stipulate the performance,
characteristics, and functions of the described products in the independent state, and are not guarantees
of the performance, characteristics, and functions of the described products as mounted in the customer's
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer's products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification"
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
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