Internal CPU/IF
Photon Counting Head H7467
The H7467 is a photon counting head designed for photon counting by simply
connecting to a PC (personal computer). The H7467 houses a metal package
photomultiplier tube, high-voltage power supply circuit, photon counting cir-
cuit, 20-bit counter and microprocessor in a compact package. Data transfer,
measurement time and other necessary adjustments are controlled by com-
mands from the PC through the RS-232C interface. The photon counting cir-
cuit discrimination level and the high voltage supply for photomultiplier tube
are preadjusted to optimum levels prior to shipment so that the H7467 can be
easily operated by simply supplying +5 V.
Product Variations
Type No.
H7467
Spectral Response
300 nm to 650 nm
Features
Internal photon counting circuit, counter, microprocessor
and RS-232C interface allow control and data transfer by PC.
Specifications
Parameter
Input Voltage
Max. Input Voltage
Max. Input Current
Effective Area
Peak Sensitivity Wavelength
300 nm
400 nm
Count Sensitivity
500 nm
600 nm
Count Linearity *
1
Typ.
Dark Count *
2
Max.
Pulse-pair Resolution
Interface
Gate Time
Operating Ambient Temperature
Storage Temperature
Weight
*1: Random pulse, at 10 % count loss
*2: After 30 minute storage in darkness
H7467
+4.5 to +5.5
6
180
8
420
1.2
脳
10
5
2.7
脳
10
5
2.2
脳
10
5
2.1
脳
10
4
1.5
脳
10
6
100
500
70
RS-232C, 9600 baud, Parity none, 8 data bit, 1 stop bit
10 to 10 000 (10 Step)
+5 to +40
-20 to +50
120
Unit
V
V
mA
mm
nm
s
-1
路pW
-1
s
-1
s
-1
ns
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