With the Timing and Synchronization upgrade, the PXIe-1092 chassis supports remote voltage monitoring and inhibiting through a female 15-pin connector on the rear panel. The following table shows the 15-pin connector pinout.

Table 10. Remote Inhibit and Chassis Monitoring Connector Pinout
Pin Signal
1 Logic Ground
2 +5 V
3 Fault (Active High)
4 +3.3 V
5 Inhibit (Active Low)
6 +12 V
7 Key
8 -12 V
9 Logic Ground
10 PFI3
11 PFI2
12 Logic Ground
13 PFI1
14 PFI0
15 Logic Ground

You can use a digital voltmeter to ensure all chassis voltage levels are within the allowable limits. Referring to the previous table, connect one voltmeter lead to a supply pin on the 15-pin remote voltage monitoring connector on the rear panel. Connect the voltmeter reference lead to one of the ground pins. Compare each voltage reading to the values in the following table.

Caution When connecting digital voltmeter probes to the rear 15-pin connector, be careful not to short the probe leads together.
Note Use the rear-panel 15-pin connector only to check voltages. Do not use the connector to supply power to external devices.
Table 11. Power Supply Voltages at Chassis Monitoring Connector
Pin Supply Acceptable Voltage Range
2 +5 V 4.75 V to 5.25 V
4 +3.3 V 3.135 V to 3.465 V
6 +12 V 11.4 V to 12.6 V
8 -12 V -12.6 V to -11.4 V
1, 9, 12, 15 Logic Ground 0 V

If the voltages fall within the specified ranges, the chassis complies with the CompactPCI voltage-limit specifications.

You can use the Inhibit signal to control the chassis inhibit state manually when the inhibit mode is set to Manual. Refer to the Inhibit Mode section for more information. Refer to the PXIe-1092 Specifications for the Inhibit signal input requirements.

The Fault signal indicates when a fault condition is detected on the chassis. The signal definition is shown in the following table. Refer to the PXIe-1092 Specifications for the Fault signal voltage specifications.

Table 12. Fault Signal Definition
State Description
Low Chassis is operating normally
High An abnormal operating condition has been detected

Examples of abnormal operating conditions include but are not limited to: intake or exhaust temperature outside of chassis operating range, a chassis fan has failed, or a chassis voltage is outside its specified operating range.

You can use the four Programmable Function Interface (PFI) lines to route triggers to/from PXI modules in the chassis. Routing triggers to the PFI lines requires using an NI API such as NI-DAQmx. You can target the individual PFI lines as sources or destinations for PXI triggers to or from a PXI module. Refer to the PXIe-1092 Specifications for the PFI line input and output specifications.

Note An optional DSUB-to-BNC cable (NI Part Number 149055-0R2) that interfaces with the remote inhibit and chassis monitoring port is available from NI. The cable enables use of the inhibit, fault, and PFI 0-3 lines through BNC.
Figure 23. Optional DSUB-to-BNC Cable


  1. Fault (Active High)
  2. Inhibit (Active Low)
  3. PFI 0
  4. PFI 1
  5. PFI 2
  6. PFI 3