Description
Photon counting unit
Photon counting unit is designed to convert single photoelectron pulses from a photomultiplier tube into 5 V digital signals by use of the built-in amplifier and discriminator circuits. Photon counting with a high S/N ratio can be performed by simply connecting a counter to the output of the photon counting unit. The C9744 uses a high-speed electronic circuit that allows measurement with an excellent output linearity up to 107 s-1. The C9744 also has a prescaler (division by 10) eliminating the need for a high-speed counter.
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| Product Specifications |
| Device types |
Photon counting unit
|
Input impedance
|
50 Ω
|
Discrimination level (input conversion)
|
-0.4 to -16 mV |
Required PMT gain
|
Approx. 3 x 106
|
Prescaler
|
÷1 / ÷10 |
| Count linearity |
(÷1) 4 x 106 s-1
(÷10) 1 x 107 s-1
|
| Pulse-pair resolution |
(÷1) 25 ns
(÷10) 10 ns
|
Output pulse width
|
(÷1) 10 ns
(÷10) Depends on count rate
|
| Package |
Enclosed Module |
| Cooling |
Non-Cooled
|
| Output Type |
CMOS 5V, Positive Logic
|
| Recommended voltage (typ.) |
+/- 5 V |
| Current consumption (typ.) |
+ 130 mA, - 50 mA
|
This product will ship 4 days after email order confirmation is sent.
