The geography of some organs and the fabric of the building may preclude the use of a multi-core cable. In these circumstances a small diameter data cable must be used.

. The TMS 9000 Small Cable Link is an extension of the TMS 9000 Transmission system. Normally the input and output boards are housed in a single card frame. However, in certain circumstances, the console may be detached from the pipework and, in this situation, it is more convenient to separate the input and output boards. This is achieved using a small diameter cable to carry data and synchronising signal together with a safety power down signal. In view of the high scanning speed and the need to have a high immunity to outside interference, a balanced differential line driver is used. Under normal circumstances, one pair of wires is used for each signal. An additional pair of low voltage wires is available in the cable to control the organ blower and transformer rectifier units. The 6mm dia cable is terminated in a 25 way plug and socket or 9 way plug and socket .