ADLINK PXES-2590 - Manual (Page 21)

Introduction 11
PXES-2590
Table 1-3: Rear Panel Legend
Feature Details
A 10MHz Reference
Clock Input The BNC connector acts as a 10MHz reference
clock input, whereby the backplane 10MHz
clock is overridden in the presence of an
external 10MHz clock
B 10MHz Reference
Clock Output The BNC connector acts as 10MHz reference
clock output
C Inhibit/Voltage
Monitoring DB-9
Connector The DB-9 connector monitors the four main
voltage rails via digital multimeter
X voltage rail pin assignments
shown in Figure 1-8
X current limiting resistors on each
voltage rail prevent accidental
overload
X one Inhibit (active low) pin is pro-
vided 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
D 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
E Fan Switch In the HIGH position, fans operate at maximum
speed, and in AUTO, the fans run based on the
monitored chassis temperature
F Universal Power Inlet Accepts C13 power outlet-equipped connection
G Chassis Ground Lug The ground wire can be crimped to the ground
lug, using a crimp tool of the appropriate size,
with the other end connected to ground