Ultra High Sensitivity Gateable Photon Counting Module
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.
EVERYTHING
IN A
NEW
LIGHT.
Features
• Very low noise, typical 10 cps,
• High dynamic range up to 6 orders 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
• Active quenching circuit for high light protection
• Extremely fast high light recovery times
• 5 volts supply voltage
MP 900
Specification *)
Detector
Detector type
Model *)
Installed CPM type
Photocathode diameter
Photocathode material
Window material
Spectral response / nm
Quantum efficiency
Dark counts (typ.)
P Version
Model
Installed CPM type
Dark counts (typ.)
*) Additional models on request
CPM-Channel Photomultiplier
MP 942
C 942 P
Bialkali
Quartz
165-650
10 cps
MP 943
C 943 P
Bialkali
UV-glass
185-650
10 cps
MP 944
C 944 P
min. 5 mm
Bialkali
Boro
300-650
20% typical
10 cps
MP 952
C 952 P
Multialkali
Quartz
165-750
50 cps
MP 962
C 962 P
Multialkali
Quartz
165-850
100 cps
MH 942P
C 942 P
10 cps
MH 943 P
C 943 P
10 cps
MH 944 P
C 944 P
10 cps
MH 952 P
C 952 P
50 cps
MH 962 P
C 962 P
100 cps
Photon Counting Electronics Data
Linear count rate
Output pulse
Over-illumination protection
Output impedance
Supply voltage
Active Quenching Control
5 MHz
TTL, positive
active quenching control
50 ohms
+5 to +5.5 V DC
TTL-Pulse, active high,
RESET: internal via timer, typ. 0,5 s
external via TTL-pulse
adjustable, min. 15 ns, max. 1 µs
< 250 mA
TTL-level: h to l
set time V
ca
to V
ch-ent
+100 V :
≈
150 µs
TTL-level: l to h
set time V
ca
to V
ch-ent
- 100 V :
≈
150 µs
Output pulse width
Input current at max. count rate
GATE voltage V
gate
Maximum Ratings
Input voltage
Operating temperature
Storage temperature
Weight
+5.5 V
5 to 40 °C
-20 to 50 °C
approx. 390 g
MP 900
Typical Spectral Response
100
Quantumefficiency (%)
10
C 943
C 944
1
C 911
0,1
100
200
C 922
C 942
C 962
C 952
300
400
500
600
700
800
900
Wavelength (nm)
Mechanical Specifications
Dimensions in (mm)
50
20
143
44
33
6,5
140
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
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.
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.
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