Crystal Instruments Spider - Page 77

Spider DSA User’s Manual
77
Figure 28. Spider-81B Pin Assignments of DIO Interface Connector
Pin name
Pin number
Pin Description
OUT1 – OUT4
1, 2, 3, 4
Up to 8 output signal pins. Connect
these pins to the input signal pins of the
external device.
IN1 – IN4
5, 6, 7, 8
Up to 8 input signal pins. Connect
output signals from the external device
to these pins.
+3.3V
15
+3.3V power supply (for internal use
only)
+12V
13
+12V power supply
GND
10, 12
Digital ground
EX_GND
14
External ground for isolated external
devices
EX_PWR
9, 11
External power, usually +12 V,
reference ground is EX_GND.
Table 1: Spider-80X DIO Port Pin Description