User manual

Getting Started 19Chapter 1
Wire Jumper Functions With the exception of JM1, wire jumpers are changed in pairs. Functions of
the wire jumpers are:
• JM1: Used during cable test (see Chapter 2)
• JM2/JM3: Used to connect the COM lines of bank pairs 0/1 and 2/3
• JM4/JM5: Used to connect the COM lines of bank pairs 4/5 and 6/7
• JM10/JM11: Used to connect the COM lines of banks 0 and 1
• JM12/JM13: Used to connect the COM lines of banks 2 and 3
• JM14/JM15: Used to connect the COM lines of banks 4 and 5
• JM16/JM17: Used to connect the COM lines of banks 6 and 7
Reconfiguring the Relay
Switch
To reconfigure the relay switch card:
1 Position the switch card on a flat surface. Using a TORX T-10 driver,
remove the six screws on the shield and carefully lift the shield to
expose the printed circuit board.
2 Configure the wire jumpers as required using Table 1-2. If you install
new jumpers, use zero-ohm resistors or No. 22 AWG copper wire. 

For example, to configure banks 0, 1, 2, and 3 as 1x8 multiplexers
and banks 4, 5, 6, and 7 as 1x16 multiplexers, jumper positions are:
Jumpers = JM14,15,16,17 and No Jumpers = JM2,3,4,5,10,11,12,13.
3 Replace the shield and re-install the six screws.
Figure 1-5. Switch Card Wire Jumper Settings
Jumper Location