EXACOM
VCR-2020
Copyright 1991, 92, 93, 94, 95, 96 all rights reserved by EXACOM, Inc.
21
B) EXTERNAL SOURCE START:
Used when a signal separate from the phone line is used to activate recording
(normally an isolated switch or relay contact, but will also detect changes in
voltage).
1) On SW1, set switch 1 to the
ON
position. Set switches 2 and 3 to the
OFF
position.
2) Connect the start signal wires to position 5 and 6 on the terminal block.
3) Connect audio signal to inner pair of jack labeled
LINE
(or to position 1 and
2 on the terminal block).
4) Finally, the VCR-2020 Console will need to be adjusted to detect changes in
the voltage level. To adjust:
a) Boot the system.
b) Take one of the phones on the line off-hook.
c) Adjust the Potentiometer in the rear of the VCR-2020 Console labeled
LEV
until the VCR-2020 Console LCD reads
RECORD
.
d) Place the phone back on-hook and readjust the
LEV
Potentiometer until
the VCR-2020 Console LCD reads
IDLE
.
e) Repeat step b) through d) as necessary until the VCR-2020 responds with
RECORD
when off-hook and
IDLE
when on-hook every time.
NOTE
:
The wires connected to positions 5 and 6 on the terminal block may
need to be swapped if step e) appears to be working backwards.
Figure 5: Console Rear Panel Connections for External Source Start
