EXACOM
VCR-2020
Copyright 1991, 92, 93, 94, 95, 96 all rights reserved by EXACOM, Inc.
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E) RADIO (Contact Closures, PTT)
Uses external start to detect signal from radio equipment.
1) On SW1, set Switch 1 to the
ON
position. Set Switch 2 and 3 to the
OFF
position.
2) Audio sources can be connected either to primary or secondary pair or both.
If transmit and receive are separate.
3) Positions 5 and 6 on the terminal block connect to either a dry contact (T,R
relay) or PTT (voltage sense).
4) Adjust for voltage detection (as Part B, Section 4, steps b - e).
5) Test for proper record operation. Key closure RECORD, Key open IDLE.
Note:
Remove 1K resistor if input 2 is used.
Figure 8: Console Rear Panel Connections for Radio Interface
F) VOR/VOX: (When no external start signal is available.)
1) Connect the audio source to the primary or secondary pair on the jack
labeled LINE (or position 1 and 2 or 3 and 4 respectively on the terminal
block).
2) Adjust potentiometer labeled VOR to recognize and reject ambient noise.
This will establish the ON/OFF levels for VOR/VOX connection.
3) Set Switches 1,2 and 3 on SW1 in the OFF position.
