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changed, the corresponding channel number is
also updated. If the channel number selected is
out of range of the frequency channel plan, the
corresponding frequency will be dashed out.
As a convenience, the voice channel also can
be entered by moving the cursor to the
associated channel position on the display and
selecting a channel number by the keypad or
tuning knob. When the channel number is
changed, the corresponding frequency value is
changed. If the channel number selected is out
of range of the frequency channel plan, the
corresponding frequency will be dashed out.
Splinter channels can only be entered by
frequency. Standard channels can be entered by
frequency or channel number (channel
numbers only map to standard channel
frequencies).
Mon:
Enter the monitor input attenuation value with
softkeys. The operator has the option of se-
lecting 0, 20, or 40 dB attenuation.
Monitor Port
Enter the port selection with softkeys. In most
cases, the operator will set the monitor port to
RF I/O.
CAUTION:
Do not input RF power into the antenna port
of the analyzer. Damage to the analyzer may
result.
Gen:
Enter the generator output level with the
keypad or the tuning knob.
Generator Port:
Enter the generator port selection with soft-
keys. In most cases, the operator will select the
port to RF I/O.
9-6.4 AUDIO ZONE
The Audio Zone during Astro Trunking tests is
modified to include only three sources. Refer to
figure 9-4.
The "Astro Dev" source sets the loudness of
the radio through the digital information sent to
the radio. A setting of 3.50 is recommended
for most tests.
The Fixed 1 kHz and External sources provide
control of the amount of modulation, measured
in kHz deviation, of a fixed 1 kHz tone, and an
external input that includes both the BNC
labeled EXT MOD IN and the microphone
input.
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