Pin Layout

All GPIs and GPOs available on OptoTrigger 5 are mapped to the two SUB D15 sockets (Port A and Port B). They have the following indices: 

 
  • 4 IN port A (indices 0-3)  
  • 4 OUT port A (indices 0-3)   
  • 4 IN port B (indices 4-7)   
  • 4 OUT port B (indices 4-7)   

 

 
Pin # Signal Name Signal Name
1 Trigger Output 0 Port A
Trigger Output 4 Port B
2 Trigger Output 1 Port A Trigger Output 5 Port B
3 Trigger Output 2 Port A Trigger Output 6 Port B
4 Trigger Output 3 Port A
Trigger Output 7 Port B
5 V_IN (VCC Input Port A) V_IN (VCC Input Port B)
6 GND Port A GND Port B
7 nc nc
8 nc nc
9 nc nc
10 V_IN (VCC Input Port A) V_IN (VCC Input Port B)
11 Trigger Input 0 Port A
(+ if used for diff. signal)
Trigger Input 4 Port B
(+ if used for diff. signal)
12 Trigger Input 1 Port A
(- if used for diff. signal)
Trigger Input 5 Port B
(- if used for diff. signal)
13 Trigger Input 2 Port A
(+ if used for diff. signal)
Trigger Input 6 Port B
(+ if used for diff. signal)
14 Trigger Input 3 Port A
(- if used for diff. signal)
Trigger Input 7 Port B
(- if used for diff. signal)
15 GND Port A GND Port B

 

Powering Opto Trigger 5

 

The power must be delivered by an external power source.

   

 

IN Signals on Opto Trigger 5

 

The input signals are not directly passed to the opto couplers but send to differential comparators. The advantage is that the input accepts low current, voltage driven signals between 5 and 25V. (Input signals can have pull up or a pull down resistor of 10k Ohm).

The polarity of the input signals is NOT inverted.

   

 

OUT Signals on Opto Trigger 5

 

On Opto Trigger 5, the opto-couplers do not directly connect to the output, but are buffered by MOSFET transistors. These transistors build an easy-to-use open collector driver with a 20 mA static current diode as pull-up.