National Instruments Network Device DAQ S - Manual (Page 25)

© National Instruments Corporation 3-1 NI 6124/6154 User Manual
3
I/O Connector
This chapter contains information about the S Series I/O connector. Refer
to one of the following sections, depending on your device:
• NI 6124 I/O Connector Signal Descriptions
• NI 6154 I/O Connector Signal Descriptions
Refer to Appendix A, Device-Specific Information , for the I/O connector
pinout for your device.
NI 6124 I/O Connector Signal Descriptions
(NI 6124 Only) Table 3-1 describes the signals found on the NI 6124 I/O
connector. For more information about these signals, refer to the NI 6124
Specifications.
Table 3-1. NI 6124 Device Signal Descriptions
I/O Connector Pin Reference Direction Signal Description
AI <0..3> GND — — Analog Input Channels 0 through 3 Ground—These
pins are the bias current return point for differential
measurements.
AI <0..3> + AI <0..3> GND Input Analog Input Channels 0 through 3 (+)—These pins
are routed to the (+) terminal of the respective channel
amplifier.
AI <0..3> – AI <0..3> GND Input Analog Input Channels 0 through 3 (–)—These pins
are routed to the (–) terminal of the respective channel
amplifier.
AO <0..1> AO GND Output Analog Output Channels 0 through 1—These pins
supply the voltage output of analog output channels 0
and 1.
AO GND — — Analog Output Ground—The AO voltages and the
external reference voltage are referenced to these pins.
D GND — — Digital Ground—These pins supply the reference for the
digital signals at the I/O connector and the +5 VDC
supply.