3-2
M28E1 and E2 Mobile Rack User's Guide
Explanation of Jumpers
To modify the operation of the backplane,
jumpers can be used to choose between
optional settings. Jumpers create shorts
between two pins to change the function
of the connector. Pin 1 is identifi ed with
a square solder pad on the printed circuit
board. Note: On two pin jumpers, "Closed"
means the jumper is on and "Open" means
the jumper is off the pins.
Connector
Pins
Jumper
Setting
3 2 1
3 2 1
Jumper Settings
Jumper
Jumper Settings
Note
JP25
Open: 45º C
1-2: 50º C
2-3: 55º C
Overheat temperature.
Backplane Connectors
Connector
Description
J5 (P2)
Power/signal receptacle
J6 (S2)
Power receptacle
