17-11 ASTRO METER AND DISPLAY
CONTROL
ASTRO meter and display zone is similar to the
standard mode. Many of the softkey selections
are available, however, many of the selections
will return a "not available in ASTRO mode"
message. Refer to paragraph 17-7.1 in the
General Operation tab of this manual for a
description of the functionality of meter and
display zone selections that are still available in
ASTRO mode.
The Display Zone is slightly modified to
accommodate testing of ASTRO radio
equipment. A BER Meter is added to the
metering functions in the Display Zone. VOICE
FRAME, CLEAR SCOPE and SET UP display
functions also have been added to the Display
Zone. Functions that have been added are
described in the following paragraphs.
Description of the other displays can be found
in paragraph 17-7.2 of the General Operations
tab of this manual.
The BER Meter is available only during BER
Monitor or Duplex Testing. This BER meter is
used to verify the performance of test signals
generated by ASTRO radios. The BER Meter
provides display of bit error rate, frequency
error and input power level as well as monitor
frequency and deviation. An example of the
BER Meter is shown in figure 17-17.
To activate the BER test, set controls in the RF
Zone as follows:
RF Control: Monitor (or Duplex)
Frequency: Same as radio transmit
frequency
Attenuation: 0 dB
Mon RF In: RF I/O
The BER Meter is accessed by placing the
cursor in the Display Zone's "Meter:" field and
pressing the
more softkey until the BER softkey
is presented. Select the BER softkey to access
the BER Meter (figure 17-17).
Figure 17-17. ASTRO BER Meter
235
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