ADLINK Technology PCI-8136, User Manual

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14 Signal Connections
3.1 Analog Input
The PCI-8136 provides 6 A/D converter channels. The analog
source is selectable for each channel to be ±10V DC (Default) or
±20 mA automatically.
To avoid ground loops and get more accuracy measurement of A/
D conversion, it is quite important to understand the signal source
type. The PCI-8136 provides differential input modes that consist
of two inputs per channel.
A differential source means the ends of the signal are not
grounded. To avoid the danger of high voltage between the local
ground of signal and the ground of the PC system, a shorted
Signal PIN Connector Function
ADC0+ 20 CN3 (DB25) ADC channel 0 (+)
ADC0- 7 CN3 (DB25) ADC channel 0 (-)
ADC1+ 21 CN3 (DB25) ADC channel 1 (+)
ADC1- 8 CN3 (DB25) ADC channel 1 (-)
ADC2+ 22 CN3 (DB25) ADC channel 2 (+)
ADC2- 9 CN3 (DB25) ADC channel 2 (-)
ADC3+ 23 CN3 (DB25) ADC channel 3 (+)
ADC3- 10 CN3 (DB25) ADC channel 3 (-)
ADC4+ 24 CN3 (DB25) ADC channel 4 (+)
ADC4- 11 CN3 (DB25) ADC channel 4 (-)
ADC5+ 25 CN3 (DB25) ADC channel 5 (+)
ADC5- 12 CN3 (DB25) ADC channel 5 (-)