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Installation Instruction ASB 150 02 > Boards for ASB 150 02

## Connection of CM-boards on BTU-A and BTU-C

Connect the correct type of the call metering board, according to the figure above, to the BTU-A board ROF 157 5110/_ or ROF 157 5127/_ and in the same way to the BTU-C board ROF 157 5111/_. The BTU-C cannot be equipped with a CM50 board, because the BTU-C provides no matching socket for the plug on the flat ribbon cable. There use the a CM12/16 (ROA 219 5135/1)

The following boards are available CM50 ROA 219 5064/1, with flat ribbon cable and CM12/16 ROA 219 5135/1 or ROA 219 5062/1 without cable.

For exact positioning of CM-boards, make use of all pin-connectors.

Note

When installing a CM50-board, connect the cable before mounting the CM50-board. The BTU-A board must also be connected to earth.

Revision: J © Ericsson Enterprise 2005