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1
Expanding the
RF Multiplexer
Note
20 Configuring the RF Multiplexer
Each RF Multiplexer module is capable of controlling up to two Expander modules,
providing a total of eighteen (4:1) banks. The Expander modules can be physically
located in the C-Size mainframe next to the RF Multiplexer, or up to eight meters
away using extension cables. Use Figure 2-3 and the procedure below to connect
the Expander Modules.
1.
Verify a 3-1 cable (HP P/N E1472-61601) is installed in the Remote
Module Driver (RMD) 2/4/5 cable slot. Cable can be connected without
removing the shield.
2.
Cut the cable ties holding the cables, and pull the cables through the slots
in the shield.
3.
Mark the 3-1 cables as shown in Figure 2-3 (cross-out unused RMD
number).
4.
Connect the 3-1 cables to the Expander Modules as follows:
RMD3 cable to HP Expander (module 01) Bank 3-5 connector.
RMD2 cable to HP Expander (module 01) Bank 0-2 connector.
RMD5 cable to HP Expander (module 02) Bank 3-5 connector.
RMD4 cable to HP Expander (module 02) Bank 0-2 connector.
RMD1 cable is connected to HP E1472A/74A (module 00) Bank 3-5 connector, and
RMD0 cable is connected to HP E1472/74A (module 00) Bank 0-2 connector at the
factory. These connections are not accessible with the shield in place and should
not be moved.
5.
If the Expander module is physically located (up to eight meters) away
from the mainframe, you can daisy chain up to 10 extender cables (HP P/N
E1473-80002) for each RMD connection (see Figure 2-3,
module 02).
6.
Fold and tie unused RMD cables.
Chapter 2
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