SmartTrunk Systems ST-2112D, Руководство по обслуживанию

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ST-2112D SM R 1.2 SMARTRUNK SYSTEMS, INC. 26
For noisy environments or when
voice encryption is used, we
recommend keeping it as low as
possible.
Press [OK] to store it in the file.
The value will be updated after the
file is transferred to the radio.
7.1.3. ANALOG AGC
ST-2112 has an Automated Gain
Control for analog microphone.
This function adjusts the gain to
reach a dynamic gain value which
makes the analog voice deviation be
equivalent to the right deviation
produced by 50mV RMS on the
microphone
output, and the
selected target gain.
If you want to use AGC, then you
must select the target equivalent
gain on the Mic Gain then check the
ACG Check Box.
For example, if you want a dynamic
gain which causes the same effect
that a gain of 6.4dB when the voice
on the microphone causes 50mV
RMS in the microphone output
(standard voice at 4 inches away
from the microphone), or 0dB gain
on
the external microphone
connection, then you must program
the Analog Gain at 6.4dB and check
AGC as bellow:
Press [OK] to store it in the file.
The value will be updated after the
file is transferred to the radio.
7.1.4. DIGITAL AGC
ST-2112 has an Automated Gain
Control for digital microphone. This
function adjusts the gain to reach a
dynamic gain value which makes
the voice to be equivalent to the
right voice digitally played back in
the other end, produced by 50mV
RMS on the microphone output,
and the selected target gain.
If you want to use AGC, then you
must select the target equivalent
gain on the Mic Gain then check the
Digital ACG Check Box.
For example, if you want a dynamic
gain which causes the same effect
that a gain of 15.0dB when the
voice on the microphone causes
50mV RMS in the microphone
output (standard voice at 4 inches
away from the microphone), or
6.0dB gain on the external
microphone connection, then you
must program the Digital Gain at
15.0dB and the external gain on
6.0dB, then check Digital AGC as
bellow: