ADLINK PCI-8124-C - Manual (Page 33)

Signal Connections 23
3.6 TTL Output Ports
There are 4 single ended TTL-level output ports on PCI-8124-C.
The following table shows the pin assignment of these TTL out-
puts.
The maximum output or sink current of each channel is 25mA.
And the maximum output voltage is D5V. User should take care of
these limitations.
CN1 Pin No. Name Description
23 TTL-OUT1 TTL Level Output port 1
24 TTL-OUT2 TTL Level Output port 2
48 TTL-OUT3 TTL Level Output port 3
49 TTL-OUT4 TTL Level Output port 4
25, 50 DGND TTL Input reference GND