NCS-3230 Rev C Instruction Manual
Copyright © 2003, 2004 New Communications Solutions, LLC
10
4.3 Recording Function
To configure the Multi-Rx
TM
for recording, connect a (tape or digital)
recorder to the RECORD jacks on the rear panel and enable recording by
setting the RECORD ENABLE switch to the “in” position. To record one or
more radios, press the RECORD SELECT switch for the desired radio(s).
For continuous recording regardless of whether there is activity or not, set
the MAN/VOX switch to the Man (in) position. In the VOX position, the
recorder will operate only when there is activity on the radio(s) selected for
recording. The VOX circuit is keyed to the BUSY lights so if the audio is
not strong enough to light the BUSY lights, then the VOX function won’t
turn on the recorder.
Note that you can record any radio(s) regardless of radio speaker
selection or mute functions. So even if a radio is not being heard through
a speaker, it can be recorded.
The red RECORD ON LED will light when actually recording. Note there
is an approximately 5 second dropout delay between the time activity
ceases and the recorder stops.
4.4 Computer Interfacing
The Multi-Rx
TM
can communicate with an external computer using serial
data. When connecting to a computer, you will need to supply a TTL-to-
RS232 adapter to provide the proper signal levels for computer control of
the Multi-Rx
TM
.
4.4.1 Electrical Interface
The Multi-Rx
TM
has a DB9 female connector on the rear panel that
has the serial data transmit and receive lines. These lines are
TTL/CMOS level and must be converted to RS-232 levels for use
with most external computers. The serial data sent to and received
from the Multi-Rx
TM
must be 8 bits, No Parity, 1 Stop Bit (8N1) at
1200 baud.
The serial data pinout on the Multi-Rx
TM
is:
Signal
DB9F DATA connector pin
RxD – TTL/CMOS level data
from
an
external computer
3
TxD – TTL/CMOS level data
to
an
external computer
2
Ground 5