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Counting unit
C9945-13
The C9945-13 is counting unit with a USB interface and can be used as 16 ch photon counter. This unit uses the double-counter method that has two counter circuits to allow measurements with no dead time. C9945-13 model has TTL input for connecting multiple photon counting head.
Specifications
| Parameter | Description / Value | |
|---|---|---|
| Input | Number of input signals | 16 ch |
| Signal input level | TTL | |
| Signal pulse width | 5 ns or longer | |
| Input impedance | 50 Ω | |
| Counter | Counter method | Double counter method |
| Max. count rate | 100 MHz | |
| Max. counter capacity | 228 counts / counter gate (*1) | |
| Internal counter gate time | 500 ns to 1 s (1, 2, 5 step) (*2) | |
| Trigger | Trigger method | Software trigger / External start trigger |
| External start trigger signal input level | TTL | |
| I/O | Number of output | 2 |
| Output level | TTL | |
| Number of input | 2 | |
| Input level | TTL | |
| Synchronous signal input level | LVTTL | |
| ID switch | 0 to 7 | |
| Buffer capacity | 4096 (word) (*3) | |
| Compatible OS | Windows® 10 pro (*4) | |
| Interface | USB 2.0 | |
| Supply voltage | DC 6.5 V to 8.0 V / 0.5 A | |
| Operating ambient temperature / Humidity | +5 ℃ to +45 ℃ / 80 % or less (No condensation) | |
| Storage temperature / Humidity | 0 ℃ to +50 ℃ / 85 % or less (No condensation) | |
| AC adapter | AC input | AC 100 V to 240 V |
| Output | +7 V / 1.6 A | |
Notes
*1 Possible to select bit numbers 28, 16, 8, 4 for count / counter gate.
*2 When transferring data continuously, internal counter gate time depends on transfer speed of USB 2.0 and counter capacity.
*3 1 (word) = 2 (byte) = 16 (bit)
*4 Power save mode of a personal computer should be turned off.
* CD-ROM (Software), AC adapter & USB 2.0 cable are supplied.
Block diagram
Dimensional outline (Unit: mm)
Connection example
- Confirmation
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