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Connector: Berg 50-way IDC.
Seen: Looking into PCB-mounted header.GND:
Ground reference voltage
+5V: Powers most logic.
+12V: -12V:
Primarily useful for RS232 buffer power.
When designing signal conditioner boards using these
rails,
take care to avoid noise from here affecting sensitive
analogue circuitry.
DAC:
D to A outputs
Ch:
Channels (input or output)
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