Chapter 3 Operating the VXI-1200
© National Instruments Corporation
3-5
VXI-1200 User Manual
1.
Connect a user-supplied cable (or equivalent) between J415
(female 15 DSUB) and either a remote switch or an open collector
driver. The switch (or driver) should connect to J415 pin 15
(INHIBIT*) and to one of the GND pins.
2.
Complete the steps as shown in Figure 3-3.
3.
Place in Standby state, with DC power to mainframe off, by
closing the remote switch shorting pin J415-15 to logic ground
(INHIBIT* to GND) or by driving J415-15 to a TTL low state with
an open collector driver that can sink 5 mA of current. The OC
voltage at J415-15 is
≤
30 VDC.
4.
Open the remote switch or deassert the open collector driver to
reapply DC power to the mainframe (power-on state). The front
power switch should be in the On position.
Rear Panel Switch and Connector Descriptions
You can use the Fan Full/Three Quarter Speed switch to adjust the
speed of the fan between full speed and three-quarter speed. Refer to
the Fan Speed Range section in Chapter 2, Configuring the VXI-1200.