II Morrow Inc. Apollo SL40 Installation Manual page 19

5. Turn the unit off to exit the Test Mode.
Mic Level Adjustment
Those units with audio board p/n 415-7008-01, or later, have the ability to make adjustments
to microphone sensitivity by using the M
Mode.
1. Press and hold the ⇔ and R
2. Turn the L
ARGE
3. Press the ⇔ key to start selection (the number will flash).
4. Turn the S
MALL
5. Turn the unit off to exit the Test Mode.
Display Test
It is possible to perform a simple test to observe all segments of the display for a quick
checkout of the display functions.
1. Press and hold the ⇔ and R
2. Turn the L
ARGE
3. Press M to perform the test. A series of "#" symbols will advance across the display
EM
testing each LED.
4. Turn the unit off to exit the Test Mode.
Mic Squelch
Adjustments to the squelch levels for Mic1 and Mic2 are available in the System Functions
mode. To adjust the Microphone Squelch level:
1. Press and hold the M
Functions mode.
2. Rotate the
LARGE
3. Rotate the S
MALL
127.
4. Press any key to exit the Setup Functions mode.
5. Select an appropriate frequency, key the transmitter, and talk into the microphone to check
the level.
Transmit Mic
The Transmit Microphone page allows you to control which microphone is permitted to
transmit. You may choose Mic 1, 2, or both. To adjust the Transmit Mic control:
1. Press and hold the M
Functions mode.
2. Rotate the
LARGE
3. Rotate the S
MALL
4. Press any key to exit the Setup Functions mode.
5. Select an appropriate frequency, key the transmitter, and talk into the microphones to
check for the intended operation.
Apollo SL40 Installation Manual
keys while switching the unit on.
CL
knob to the M 1 L
IC EVEL
knob to change the value. Press M
keys while switching the unit on.
CL
knob to the DISPLAY TEST page.
button for about two seconds. This will access the System
ON
knob to display the M
knob to change the level number. The range of the number is 000 to
button for about two seconds. This will access the System
ON
knob to display the T
knob to select MIC1, MIC2, or MIC1+MIC2.
1 L and M
IC EVEL IC
and M 2 L pages.
IC EVEL
to store the value.
EM
1 M 2 S pages.
IC OR IC QLCH
M page.
RANSMIT IC
Installation
2 L pages in the Test
EVEL
13