WB1400 CCP External Connections

This page is intended to show how a WB1400 CCP may be connected for demonstration purposes. Ideally you should obtain a full set of diagrams WB29607 for the CCP and the terminating unit it connects to, WB29628. (I have nothing myself before you ask.)

The minimum requirement to get the panel functioning is a well regulated 12volt supply connected to N (Negative) and P (Positive). The internal 12volt battery for wartime should not be required. Pins V and W were connected together in the Male Connector to complete the battery circuit, this prevents the battery discharging when the unit is unplugged.

The connection to the Carrier Control Exchange is similar to the diagram of the WB400 CCP. If a WB1400 receiver is available too, this could receive messages from the CCP. It could be connected to the X-Path to CCE pair on pins L and M. The problem is how to power the receiver, a bodge up would be to attack the internals of the receiver. It should be possible to connect a 50 volt well smoothed a power supply, via a 200ohm resistor in each leg to pins R and S. This feeds the charging current via the CCP. The Y-Path could be used instead, using J / K for the receiver and T / U for the power. Note - This is not how WB receivers were actually connected.

If an old PC with sound card and suitable software were available it may be possible to supply a locally generated speaking clock and maybe simulate the Strike Command 180Hz alert signal sent by the CCE to the CCP. At the ROC Group HQ the CCP line terminated on a switchboard, but a suitably connected phone with some associated power supply and circuitry could enable this function to be simulated. The CCE sends ringing current (75v 25Hz) to the CCP, CCP sends +12v to the CCE. The CCE translated this to balanced battery to and from Group.