Omega Engineering DAQ-12 User Manual page 24

CHx-, CHx+ : Analog inputs to the analog to digital converter. When using differential input
mode, eight input channels are available (CH0+ to CH7+). When using single-ended
inputs, 16 channels are available (CH0+ to CH15+). The first eight channels are input
through the connections marked CH0+ to CH7+ and the second eight channels through CH0-
to CH7-.
AOUT0, AOUT1: Analog outputs from the digital to analog converters. Polarity and
maximum amplitude depend on the jumper settings and voltage references. Output
resistance of the analog outputs is typically 70 ohms.
VREF0, VREF1: External voltage references for the digital to analog converters. Input range is
0 to 5.0 volts with a no-load input resistance of 7.5 Kohms typical.
EXT CLK, EXT TRG, EXT INT: External clock, trigger, and interrupt inputs respectively.
Inputs are TTL compatible.
DOUT0, DOUT1, DOUT2, DOUT3: TTL compatible digital output lines.
DIN0, DIN1, DIN2, DIN3: TTL compatible input lines.
DAQ-12 Users Manual 24