Инструкции По Установке для American Dynamics ad1676b

To connect the 1676 keyboard to a particular switching system,
refer to the following steps and the illustrations contained in
the Appendices.

a) For 1650B Systems see Appendix A.

b) For 1996 CPU (2050 Systems) see Appendix B.

c) For 2150/2350 Systems see Appendix C.

d) For multiple keyboards using the 1981 Port Expander see
Appendix D.

1. Wire the pendant cable from the wall plug transformer to

the AC input connectors 1 and 8 on the Junction Box .  

2. Plug the transformer into the power source, 120 VAC

standard or 230 VAC for X models.

3. Verify 7.5 VAC between terminals 1 and 8. 

4. After verification, remove the transformer and continue the

connections.

5. Connect a 3-wire RS-232 type cable to pins 4 (RCD), 5

(XMIT), and 7 (GND) on the junction box.

For RS-232 connections, connect the Transmit (XMIT) of
the keyboard junction box to the Receive (RCD) of the unit
and the Receive (RCD) of the keyboard junction box to the
Transmit (XMIT) of the Video Switching System. 

Note: Modem "control" lines, CTS and DTR, are not used.

Some Modems require that these lines be tied together.

6. Plug the transformer into the power source.  Press the MON

button several times until the monitor number appears on
the LED display.  This operation initializes the keyboard.

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