MODEL NO.
100D1797
Modulator Sub-Assembly
F E AT U R E S
45 - 70 MHz
High Isolation
30 nSec Switching Speed
Integrated SPST Blanking Switch, Bi-Phase
Modulators, and Digital Attenuators
High Pass Filters for Reduced Transients
0.5 dB LSB / 127.5 dB Attention Range
TTL Control
HDI
D A I C O
I n d u s t r i e s
Rev. A / Iss. 1
J1
J2
J3
SPST
SWITCH
(SW.1)
BI-PHASE
MODULATOR
(MOD 1)
2-WAY
PWR DIVIDER
(P1)
8 BIT ATTENUATOR
.5dB
127.5 dB
LSB
RANGE
8 BIT ATTENUATOR
.5dB
127.5 dB
LSB
RANGE
BI-PHASE
MODULATOR
(MOD - 3)
BI-PHASE
MODULATOR
(MOD - 2)
30 MHz
HI-PASS
FILTER
30 MHz
HI-PASS
FILTER
T Y P I C A L P E R F O R M A N C E
a t 2 5
C
I.L. (dB)
ISO (dB)
FREQUENCY (MHz)
40
100
400
1000
0
15
30
60
0
10
20
30
40
VSWR
1.0
1.2
1.4
1.6
1.8
45
20
I. LOSS
VSWR
ISO
G U A R A N T E E D P E R F O R M A N C E
Parameter
Min Typ
Max Units
Conditions
Operating Frequency
45
70
MHz
DC Current
1
2
A
At +5 VDC Supply
Control Type
TTL
20 Line
Switch Modulator "1" = Thru "0" = Off
Phase Modulator "1" = 0 DEG "0" = 180
Attenuation Bits "1" = ATTN "0" = Thru
Control Current
High
1
200
A
VIH = +2.7V
Low
-60
200
A
VIL = +0.5V
Insertion Loss
16
20
dB
Balance Between Channels
0.1
0.5
dB
Phase Difference
+0.4
2
DEG
Insertion Loss State
Isolation
70
83
dB
J1 - J2, J1- J3 (SW1 Off)
40
43
dB
J2 - J3
Attenuation
LSB
0.5
dB
Range
0
127.5
dB
0.5, 1, 2, 4, 8, 16, 32, 64
Accuracy
dB
(0.15 + 2% of Atten. Setting in dB)
VSWR
Input
1.2/1
1.3/1
J1, Input
Output
1.4/1
1.6/1
J2, J3 Outputs
Impedance
50
OHMS
Switching Speed
30
50
nSec
50% TTL to 90% / 10% RF
Transition (Rise/Fall) Time
20
nSec
All SW., Mods, + Bits
Intercept Points
2nd
+38
dBm
40 MHz / 30 MHz
3rd
+10
dBm
20 MHz / 30 MHz
RF Power
Operate
+14
+10
dBm
0.1 dB Compression
No Damage
+27
dBm
Operating Temperature
0
+25
+60
C
TA
PART IDENTIFICATION
J1
J2
J3
J4
3.50 TYP
CONNECTOR, 37 PIN
M24308/3-4
5.00
4.00
.03
12.00
.03
PIN 1
.19
1.30
MAX
CONNECTOR, SMA
FEMALE 3 PLACES
.xx = .02
.xxx = .010
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