ENS- ECH photodetector module P30232
Contents
1. TECH NTIN N x HH gt 6 i photocathode type bialkali photocathode active diameter 25 mm spectral response range 280 to 630 nm see curve peak QE at 400 nm 28 output RS232 baud rate 9600 parity None data bits 8 stop bits 1 control see user manual discriminator level 2 mV dark counts at 20 C typ 100 s max 200 s power input at 10 s 5 V 120 mA warm up time less than 2s ratings input voltage temperature operating 4 75 V to 5 25 V to G0 aco C storage 40 C to 55 C humidity non condensing 93 RH maximum at 30 C weight 310g operating position any finish matt black T user I O connections TTL input and output lines are available for control of the module and to command peripheral operations start command for cycle defined by software trigger input grey start command for user applications For example activate shutter busy indicator user output violet 8 photocathode spectral response 9 dynamic range Typical counting sensitivity for P30232 at 400 nm Note that automatic dead time correction has been applied at high count rates The dynamic range can be further extended at low count rates by dark count subtraction in the software 10 functional diagram anode photocathode disable 5V red Q ja user out violet O trigger in grey O Tx pin 2 Rx pin 3 Q OV pin 5 O P30232 data sh2. 9001 registered company www sens tech com e SENS TECH SENSOR TECHNOLOGIES Sens Tech Limited 2007 DS_ P30232 Issue 1 30 march 2007
3. The P30232 is a plug and play photodetector module configured for photon counting It comprises aselected 30 mm diameter end window photomultiplier tube with blue green sensitive bialkali photocathode and ultra low dark counts a positive high voltage power supply a high speed amplifier discriminator a counter and a micro controller All are encapsulated within a cylindrical mumetal case providing a high level of immunity from the effects of external magnetic fields Low voltage and signal output connections to the module are by axial flying leads e intended for ultra low light measurements requiring single photon detection via an RS232 interface to a host PC OO fi gl I vE amp me and simplicity of operation minimal set up time compact cylindrical assembly electrostatic and magnetic shielding RS232 interface quartz window option 20 MHz count rate capability automatic dead time correction operates from 5 V supply preset discriminator level and HV fully enclosed high voltages only 600 mW total power dissipation typical discriminator threshold preset to 2 mV HV factory set for optimum operating voltage will operate with any PC running Windows 95 98 with a free RS232 serial port 4 A manual giving detailed installation start up software and programming procedures Is supplied with every package 5 Each module is supplied with test data including photocathode parameters and dark counts SENS
4. eet page 2 11 outline drawing mm 35 0 0 5 25 0 active diameter T photomultiplier mumetal case 181 5 41 screened cable 610 50 1850 50 9 way D socket 5V Red 2 Tx 0V Black 3 Rx I O out Violet 5 Gnd O in Grey 12 installation and operation Each module is supplied with test data Wherever possible installation should be carried out in subdued light Remove the protective cap from the module Mount the module and make power input and signal connections Do not expose the photomultiplier tube photocathode to strong lights while the module is energised 13 warning No attempt must be made to repair or dismantle this product High voltage used within the module may present an electric shock hazard Operation beyond the maximum ratings or reversal of the input voltage may result in loss of performance or permanent damage to the product mumetal is a registered trademark of Magnetic Shield Corporation The company reserves the right to modify these designs and Sens Tech Limited Bury Street Ruislip Middx HA4 7TA UK tel 44 0 1895 630771 fax 44 0 1895 635953 e mail info sens tech com arising therefrom specifications without notice Developmental devices are intended for evaluation and no obligation is assumed for future manufacture While every effort is made to ensure accuracy of published information ae the company cannot be held responsible for errors or consequences an ISO
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