Telex ISP-100 Cable Diagrams, Analog Audio MIM-1, MIM-2, MOM-1, Balanced Output to Balanced Input

2-4

Cable Diagrams

Analog Audio (MIM-1, MIM-2, MOM-1)

Using low-cost connectors can save money in the short term, but failures could cost more.

Figure 2-6Analog inputs.

Balanced Input from Balanced Output

Connect the positive (+) side of the line to pin 2 of the male 3-pin XLR connector and the negative (-) side of the line to pin 3 of the connector. In keeping with standard wiring practices, the shield should not be connected at this end; it should only be connected to pin 1 of the 3-pin female XLR connector or ground of the source end. See Figure 2-6 for more information.

Balanced Input from Unbalanced Output

Connect the “hot” wire to pin 2 of the 3-pin male XLR connector and the shield wire to pin 1 of the connector. To avoid a 6 dB drop in level, connect pin 3 to pin 1 of the connector. See Figure 2-6 for more information.

Figure 2-7Analog outputs.

Balanced Output to Balanced Input

Connect the positive (+) side of the line to pin 2 of the 3-pin female XLR connector and the negative (-) side of the line to pin 3 of the connector. In keeping with standard wiring practices, the shield should be connected at this end; it should not be connected to pin 1 of the male 3-pin XLR connector or ground of the load end. See Figure 2-7 for more information.

Confused about what type of cable to use? Try Belden 8451 or 8723. Both are good quality and inexpensive.

10 July 1998