36
Specifications
Product Variations
The H7468 series are photosensor modules assembled with a photomultiplier
tube, an AD converter circuit and a microcontroller. These photosensor mod-
ules operate from a single +5 V supply and convert the photomultiplier tube
analog signals into 12-bit digital data which can be sent to a PC (personal
computer) through the RS-232C interface. The photomultiplier tube supply
voltage and measurement start/stop can also be controlled from the PC.
Metal Package PMT with Internal Charge Amp+ADC Type
Photosensor Modules H7468 Series
Type No.
H7468
H7468-01
H7468-03
H7468-20
300 nm to 650 nm
300 nm to 850 nm
185 nm to 650 nm
300 nm to 900 nm
For visible range
For visible to near IR range
For UV to visible range
High sensitivity in near IR range
Spectral Response
Features
Parameter
H7468
Suffix
Input Voltage (Vcc)
Max. Input Voltage
Max. Input Current
Effective Area
Digital Output: Maximum Output Current
Digital Output: Maximum Sink Current
Voltage between Digital Input and GND
Peak Sensitivity Wavelength
Cathode
Sensitivity
Gain *
2
Anode Dark Current *
2,
*
3
Integration Capacitance
AD Converter Resolution
Integration Time
Dead Time
Sampling
Time
Measurement Count (fixed set reading)
PMT Supply Voltage
Digital High-Level Input Voltage
Digital Low-Level Input Voltage
Digital High-Level Output Voltage
Digital Low-Level Output Voltage
RS-232C Interface Setting
Operating Ambient Temperature
Storage Temperature
Weight
+4.75 to +5.25
+6
35
8
25
25
-0.3 to Vcc +0.3
1000
12
0.04 to 500 (0.01 step)
0.01 to 500 (0.01 step)
4 to 1000
0.05 to 1000
1 to 127
0 to 1000
4
1
Vcc -0.7
0.6
RS-232C, 9600 baud, Parity none, 8 data bits, 1 stop bit
+5 to +50
-20 to +50
105
None
420
40
70
8.0
--
62
7.0
10
5
0.2
2
-01
400
80
150
--
0.2
60
5.0
10
5
0.4
4
-03
420
40
70
8.0
--
62
7.0
10
5
0.2
2
-20
630
350
500
--
0.45
78
5.0
10
5
2
20
Unit
--
V
V
mA
mm
mA
mA
V
nm
A/lm
--
--
mA/W
--
nA
pF
bit
ms
ms
ms
ms
--
V
V
V
V
V
--
C
C
g
*1: Measured at the peak sensitivity wavelength *2: PMT supply voltage: 800 V
*3: After 30 minute storage in darkness
Luminous Sensitivity
Blue Sensitivity Index (CS 5-58)
Red/White Ratio
Radiant Sensitivity *
1
Continuous Reading
Fixed Set Reading
Min.
Typ.
Typ.
Typ.
Max.
Min.
Max.
Min.
Max.
37
Characteristics
(Cathode radiant sensitivity, PMT gain)
Block Diagram
Dimensional Outlines
(Unit: mm)
Connection Diagram
TPHOA0029EB
Option
(Optical Fiber Adapter) (Unit: mm)
TACCA0055EA
4-M2
FC-R
14.0
0.2
8.5
3.5
0.2
SIDE VIEW
FRONT VIEW
22.0
0.5
E5776-51 (SMA Type)
4-M2
SMA
14.0
0.2
10.7
5.0
3.0
SIDE VIEW
FRONT VIEW
22.0
0.5
TACCA0239EA
E5776 (FC Type)
TPHOC0051EA
TPHOB0053EA
TPHOB0054EA
TPHOC0046EB
100
200
300
400 500
600
700
800
900 1000
WAVELENGTH (nm)
0.1
1
10
CATHODE RADIANT SENSITIVITY (mA/W)
100
H7468-01
H7468-20
H7468
H7468-03
100
200
PMT SUPPLY VOLTAGE (V)
400
600
800 1000
10
1
10
6
10
4
10
5
10
3
10
2
PMT GAIN
10
7
R7468/-03
R7468-01/-20
BLACK
RED
WHITE
BLUE
GREEN
: GND
: Vcc (+5 V)
: User Line (TTL Output)
: External Trigger (TTL Input)
: NC
SHIELD: GND
1500
35.0
0.5
35.0
0.2
0.5
50.0
0.5
25
14.0
0.2
9.4
14.0
0.2
11
40.0
0.2
60.0
0.5
35
13
6-PIN PLUG HIROSE HR10A-7P-6S
POWER CABLE (SUPPLIED)
RS-232C CROSS CABLE (SUPPLIED)
SIDE VIEW
FRONT VIEW
REAR VIEW
EFFECTIVE AREA ( 8 MIN.)
4-M2 DEPTH: 4
4-M3 DEPTH: 4
WINDOW
PHOTOCATHODE
RS-232C
9PIN D-sub
POWER INPUT CONNECTOR
HIROSE HR10A-7R-6P
1: GND
2: Vcc +5 V
3: User Line (TTL Output)
4: External Trigger
(TTL Input)
5: NC
6: NC
450
20
WHITE
BLUE
GREEN
: User Line (TTL Output)
: External Trigger (TTL Input)
: NC
PC
SERIAL PORT
RS-232C CROSS CABLE
POWER CABLE
H7468
SUPPLY
VOLTAGE
GND
BLACK
RED
+5 V
+
P
1000 pF
K
PMT
MULTISTAGE VOLTAGE
RECTIFIER CIRCUIT
OSCILLATOR
CIRCUIT
12 BIT
DAC
12 BIT
ADC
MICRO
CONTROLLER
INTEGRATION TIME SETTING
ADC DATA
Vcc (+5 V)
User Line (TTL Output)
GND
GND
External Trigger (TTL Input)
Tx
Rx
RS-232C
INTERFACE
CHARGE
AMP
ADC
CONTROL
DAC
CONTROL
DAC DATA
STABILIZING
CIRCUIT
HIGH VOLTAGE
FEEDBACK
VOLTAGE
CONTROL
Photosensor Module with CPU/IF
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