Chapter 2
Installation and Configuration
©
National Instruments Corporation
2-9
There are six dual-color LED indicators on the front panel of the chassis.
Four of the LEDs indicate the status of voltage supply regulation (+3.3 V,
5 V, +12 V, –12 V). The FAN LED indicates the operational status of the
fan. The TEMP LED indicates whether the chassis is maintaining a proper
operating temperature, or whether there is an over-temperature condition.
The operating temperature of the chassis should not exceed 60 °C.
Remote Voltage, Temperature, and Fan Monitoring
The PXI-1056 chassis supports remote voltage, temperature, and fan
monitoring through a RS-232 9-pin D-sub connector located on the rear
panel. Table 2-1 shows the pinout of the 9-pin D-sub connector.
Caution
Use the rear-panel 9-pin D-sub connector to connect to an RS-232-capable
device. Do
not
use the connector to supply power to external devices, or damage to the
chassis may result.
Table 2-1.
Voltage Monitoring Connector Pinout
D-sub Pin
Signal
1
Ground
2
Receive data input
3
Request to send, input
4
Transmit data, output
5
Clear to send, output
6
Reserved
7
Reserved
8
Reserved
9
Reserved
1
2
3
4
5
6
9
7
8
