Keysight Technologies M9506A-BC1, Instruction Manual, Page: 19 / 96

M9506A-BC1 5-Slot AXIe Chassis with Integrated Controller User Guide 19
Introduction 1
The Chassis INHIBIT Switch
The method of powering up the chassis depends on the position of the INHIBIT
switch on the chassis rear panel, which can be set to the DEF ( DEF ault) position or
to the MAN ( MAN ual) position. These two methods work as follows:
- INHIBIT switch in the DEF position — In this position, the front panel power push
button is used to switch the chassis between ON and Standby—hence, this is
known as the ON/Standby push button.
- INHIBIT switch in the MAN position — In this position, the Inhibit signal (pin 5 on
the DB-9 connector) controls chassis power. The chassis is powered up by
applying a logic high signal to the Inhibit signal. When the Inhibit pin (pin 5) is
pulled low, the chassis is in Standby. This is the factory default position
Use of the INHIBIT switch in the DEF position and the ON/Standby push button to
power up the chassis is assumed unless otherwise noted. For information on using
the Inhibit signal on the rear panel DB-9 connector to power the chassis up and
down, refer to the section “Chassis Inhibit/Voltage Monitoring” in the M9506A
User Guide .
The RJ45 connectors are for multiple chassis power-up synchronization. Option
BC1 does not support this feature.
Figure 1 Chassis Power Inhibit Switch, DB9 Connector, Power Sync Connectors
Inhibit Switch
NOTE
Leave the INHIBIT switch in the DEF position when connecting the
AC power cord to the chassis. After inserting the power AC power
cord, then move the INHIBIT switch to the MAN position.
CAUTION
The RJ45 connectors are for multiple chassis power-up
synchronization. Do not connect LAN cables from your corporate
LAN to these connectors.