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EVERYTHING
IN A
NEW
LIGHT.
Description
The Photon Counting Head MP 900 series is designed for applications in all fields of single photon
detection, e.g. chemoluminescence, bioluminescence, in-vitro assay, environmental measurements
or pure research. It is an easy to use module, containing the Channel Photomultiplier, a high voltage
power supply, a discrimination amplifier and a pulse shaper for fast output pulses. An installed active
quenching systems avoids over-illumination to the detector. It is also possible to apply an external gate
function for time correlated photon counting. Strong variations in light levels are possible due to the high
dynamic range of the installed CPM. The exceptional low noise and high sensitivity facilitates detection
of extremely low light levels.
Features
•Very low noise, typical 10 cps,
•High dynamic range up to 6 order s of magnitude
•High reliability
•No cooling requirement
•Very high stability in noise level, no sudden "bursts"
•High stability over time
•Rugged and compact design
•Gateable CPM input for time resolved measurements
•Acti ve quenching circuit for high light protection
•Extremely fast high light recovery times
•5 volts supply voltage
MP 900
Ultra High Sensitivity Gateable Photon Counting Module
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MP 900
Specification *)
Detector
Detector type CPM-Channel Photomultiplier
Model *) MP 942 MP 943 MP 944 MP 952 MP 962
Installed CPM type C 942 P C 943 P C 944 P C 952 P C 962 P
Photocathode diameter min. 5 mm
Photocathode material Bialkali Bialkali Bialkali Multialkali Multialkali
Window material Quartz UV-glass Boro Quartz Quartz
Spectral response / nm 165-650 185-650 300-650 165-750 165-850
Quantum efficiency 20% typical
Dark counts (typ.) 10 cps 10 cps 10 cps 50 cps 100 cps
P Version
Model MH 942P MH 943 P MH 944 P MH 952 P MH 962 P
Installed CPM type C 942 P C 943 P C 944 P C 952 P C 962 P
Dark counts (typ.) 10 cps 10 cps 10 cps 50 cps 100 cps
*) Additional models on request
Photon Counting Electronics Data
Linear count rate 5 MHz
Output pulse TTL, positive
Over-illumination protection active quenching control
Output impedance 50 ohms
Supply voltage +5 to +5.5 V DC
Active Quenching Control TTL-Pulse, active high,
RESET: internal via timer, typ. 0,5 s
external via TTL-pulse
Output pulse width adjustable, min. 15 ns, max. 1 µs
Input current at max. count rate < 250 mA
GATE voltage V
gate
TTL-level: h to l set time Vcato V
ch-ent
+100 V : ≈ 150 µs
TTL-level: l to h set time Vcato V
ch-ent
- 100 V : ≈ 150 µs
Maximum Ratings
Input voltage +5.5 V
Operating temperature 5 to 40 °C
Storage temperature -20 to 50 °C
Weight approx. 390 g
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MP 900
For more information e-mail us at opto@perkinelmer.com or visit our web site at www.perkinelmer.com/opto
All values are nominal; specifications subject to change without notice.
is a registered trademark of PerkinElmer, Inc.
PerkinElmer Optoelectronics PerkinElmer Optoelectronics PerkinElmer Optoelectronics
2175 Mission College Blvd. 47 Ayer Rajah Crescent #06-12 Wenzel-Jaksch-Str. 31
Santa Clara, CA 95254 Singapore 139947 D-65199 Wiesbaden
Phone: 408) 565-0830 Phone: +65 775-2022 Germany
Fax: (408) 565-0703 Fax: +65 777-2196 +49 (611) 492-0
+49 (611) 492-369
©2000 PerkinElmer, Inc.
All rights reserved.
0900
CAUTION: High Voltage Warning
This product operates at high voltage. Extreme care must be taken to ensure operator safety and to avoid damage to other instruments. Avoid direct contact with the entrance
window of the built in CPM when high voltage is applied. Avoid placing conductive material close to the cathode.
50
20
44
33
6,5
140
143
Mechanical Specifications
Dimensions in (mm)
Input/Output Signals: Connections
DB Connector
- 1 (red) 5V
- 3 (black) Gnd
- A1 (coax) External Gate In
- 2 (yellow) Monitor voltage (V
ch-ent
)
- 4 (green) Not connected
BNC Connector
- TTL Signal Output
- GND
Typical Spectral Response
Wavelength (nm)
100 200 300 400 500 600 700 800 900
100
10
1
0,1
C 911
C 922
C 943
C 944
C 942
C 952
C 962
Quantumefficiency (%)
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