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Connector J21
Connector J21 may be used in conjunction with J20 for interfacing with an
inhibit switch, LED, and thermistor. It is not necessary to connect to J21 for
basic power-up of the backplane. Refer to Table 2 for the pin descriptions.
The mating connector for pins 1–6 of J21 is manufactured by Molex and
can be ordered with the part number 22-01-2067.
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10 MHz
OUT
Figure 5. J1 Connector
Table 2. Connector J21 Pin Descriptions
Connector
Pin
Signal
1
THERM2
2
THERM1
3
(No Pin)
8
7
4
NC
6
5
LED1
5
4
6
+5V
3
2
7
INH
1
8
LED2
9
GND
7
Ground
10 MHz
IN
Description
Connects to pin 11 of J20
Connects to pin 10 of J20
—
Not connected.
Connects to pin 6 of J20.
Connects to backplane's +5V
power plane.
Connects to pin 5 of J20.
Connects to pin 4 of J20.
Connects to backplane's ground
plane.
8-Slot PXI Backplane Installation Guide
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