JYTEK PXIe-2722, User Manual

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PXIe-2722 Chassis | jytek.com | 18
2.4.3 Inhibit/Voltage Monitoring DB-9 Connector
The DB-9 connector monitors the four main power rails via digital multimeter. Power
rail pin assignments shown in Figure 15. There are 10 kΩ current-limiting resistors on
each power rail prevents accidental overload. One Inhibit (active low) pin is provided
to power the chassis on/off when the Inhibit Switch is in the MAN (manual) position,
such that chassis is powered on when Inhibit pin is logic high or open, and off when
Inhibit pin is grounded.
Figure 15 Inhibit/Voltage Monitoring DB-9 Connector
2.4.4 Inhibit Switch
In the DEF (default) position, the front panel power button turns the power supply
on/off, and in the MAN (manual) position, the Inhibit pin on the DB-9 connector
turns the power supply on/off.
Figure 16 Inhibit Switch