Module A-165-2 includes six modification circuits for digital signals (clock, gate, trigger, start, stop etc.) which are derived from the two input signals Input 1 und 2:

• inverted signal of Input 1 (labelled 1)
• inverted signal of Input 2 (labelled 2)
• T flipflop (toggle flipflop), controlled by Input 1, this output changes it's state whenever a the rising edge of Input 1 appears (labelled 1/2, as it works similar to a 1:2 frequency divider)
• Set/Reset flipflop, this output changes it's state to "high" during the rising edge of Input 1 and turns "low" during the rising edge of Input 2 (labelled RS)
• inverted output of the Set/Reset flipflop (labelled RS)
• pulse output, during both the rising and falling edge of Input 1 a short trigger pulse with about 50 ms lenght is generated (labelled with the sign ± and a rectangle pulse symbol)

The outputs 2, 1/2, RS and the pulse output are equipped with LEDs that display the state of the output in question. The output level for all six outputs can be set to 0/+5V or 0/+11V by means of a jumper on the pc board.

Voltage thresholds for the input voltages: voltages below +0,8 V are treated as "low", voltages above +3 V are treated as "high"