Switching The Vox Signal Source - R&S M3SR 4100 Series Operating Manual

M3SR Series 4100
4.8.3.10

Switching the VOX Signal Source

Softkey
Operating Manual 6175.4760.02 – 01
Softkey Type
Listbox
Switching the VOX Signal Source
Description
1. Press 'VOX' softkey.
2. Select desired mode from listbox.
3. Press 'ENT' to confirm.
Possible values:
OFF - LINE - VOICE
In VOX (voice-operated transmission), the ra-
dio is keyed when a voice signal is present on
the audio or line interface. VOX is only avail-
able in voice communication, i.e. in modulation
modes +/-J3E, A3E and F3E.
If VOX is set to VOICE, the operator can
switch to transmit mode by simply talking into
the microphone connected at the front panel,
and when he stops talking the radio automati-
cally returns to receive mode.
If VOX set to LINE, the transmit mode is acti-
vated as soon as a voice signal at the USB line
input on X26 is detected.
For VOX operation in SECOM-H a certain
reaction delay is to be observed. Wait with
transmission until a short sequence of
beeps is heard. Otherwise no communica-
tion will take place.
4.175