MP942

MP 900 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. E VERYTHING 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 Vca to Vch-ent +100 V : ≈ 150 µs TTL-level: l to h set time Vca to Vch-ent - 100 V : ≈ 150 µs Output pulse width Input current at max. count rate GATE voltage Vgate 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 (Vch-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. PerkinElmer Optoelectronics 2175 Mission College Blvd. Santa Clara, CA 95254 Phone: 408) 565-0830 Fax: (408) 565-0703 ©2000 PerkinElmer, Inc. All rights reserved. 0900 PerkinElmer Optoelectronics 47 Ayer Rajah Crescent #06-12 Singapore 139947 Phone: +65 775-2022 Fax: +65 777-2196 PerkinElmer Optoelectronics Wenzel-Jaksch-Str. 31 D-65199 Wiesbaden Germany +49 (611) 492-0 +49 (611) 492-369 is a registered trademark of PerkinElmer, Inc.