ET Enterprises - Electron Tubes

CT2 Counter Timer

The CT2 counter timer module is for counting all sources of TTL pulses including all ET Enterprises TTL photon-counting module and TTL amplifier discriminators. View outline drawing.

  • 100 MHz capability
  • 32 bit count capability
  • integral microcontroller and RS232 interface to the host computer
  • trigger input for synchronous counting

operation

The following operating modes are available with the software application provided:

  • continuous readings
  • fixed number of readings
  • continuous readings with trigger high
  • fixed number of readings - start on falling edge of trigger

software and user manual

A comprehensive manual giving installation, start up software and programming procedures is supplied on CD-Rom with every CT2 module.

An ActiveX ® control driver is also provided to allow users to develop their own control software using LabView ®, Visual Basic ®, etc.

cables

An RS232 cable is included with every CT2.

Also, a cable LEADAD6CT2 is available to connect an AD6 amplifier discriminator. The CT2 supplies the AD6 power requirements through this cable.

specification

  power supply    
    connector 2.1 mm power socket  
    voltage +4.75 to 5.5 V  
    current 60 mA max at 5 V  
       
  signal input    
    connector BNC socket  
       
  levels TTL  
    edge speed 125mV / ns min, 0.8 to 2.0 V  
    minimum pulse width 5.0 ns  
    pulse pair resolution 8.3 ns  
    maximum frequency* 100 MHz  
    sample time 10 ms to 300 s  
       
  RS232 interface    
    connector 9 pin 'D' socket  
    baud rate 9600  
    format no parity, 8 data bits, 1 stop bit  
       
  user interface    
    connector Hirose 6 pin chassis plug  
    HR10-7R-6P  
    trigger input TTL  
    out 1 TTL; sink 20 mA, source 80 µA  
    out 2 open drain FET**  
       
  general    
    weight 175 g  
   
  *with ultra fast photomultiplier, and using dead time correction
**sink 60 mA, on resistance 0.45 Ω max.
  

em6 software