OBB Light Detector

Dual Mode, Analog/Photon Counting Photomultiplier Detection System Specifications

 
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Controls

All controls and displays are available on the front and side of the OBB PMT housing.

 

Control Specifications

Dual Mode, Analog/Photon Counting Photomultiplier Detection System Display LCD display of high voltage or signal
Controls On/Off switch
Analog/Digital Mode switch
Voltage/Signal Display switch
Voltage Adjust potentiometer
Analog Gain selection
Analog Time Constant selection
Analog Offset
BNC Connectors Signal Out
External Voltage Control

Specifications

Physical Specifications

Dimensions (WxDxH) 4  x 4 x 8 inches
Weight 4 lbs

 

High Voltage Power Supply Specifications

Input
± 15 VDC, 250 mA
High Voltage
-200 to -1,100 VDC manually adjustable LCD displays actual cathode voltage
External High
0 to +5 VDC (0 = -200 V, 5 = -1,100 V)
Voltage Adjust
Continuously adjustable
Input Regulation
± 0.05% max. (for 15 V ± 1 V input).
Load Regulation
± 0.05% max.
Ripple
100 mV p-p max.
Temperature Coefficient
± 0.01% max. (+5 to 40°C)
Drift ± 0.03%/hr. max. (after 15 minute warm-up)

 

AC Adapter Specifications

Input
115 or 220 VCA (specify at time of order)
Output ±15 VDC, 250 mA

 

Analog Mode Specifications

Gain Settings: 1 µA = 1 V
0.1 µA = 1 V
0.01 µA = 1 V
0.001 µA = 1 V
Time Constant Settings:
(with Corresponding Analog Frequency
0.05 msec (20 KHz)
0.5 msec (2 KHz)
5 msec (200 Hz)
50 msec (20 Hz)
500 msec (2 Hz)
Offset Correction: ± 50 nA
Signal Output on BNC connector: Analog voltage

 

Photon Counting Mode Specifications

Linear Dynamic Range: 5 orders of magnitude*
Dead Time: 250 ns
Signal Output on BNC connector: TTL

* Linear dynamic range of the OBB photon counting PMT housing. The intensities were produced by attenuating the fluorescence emission of a fluorescein sample with neutral density filters.

 
OBB has a policy of continuous product development and reserves the right to amend part numbers, descriptions and specifications without prior notice.
 
 

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Contact OBB

HORIBA Scientific
Optical Building Blocks
3880 Park Avenue
Edison New Jersey
08820-3097

Tel: 732-494-8660
Fax: 732-623-8129
E-mail:info.sci@horiba.com