ALIGNMENT PROCEDURE AND PERFORMANCE TESTS
6-5 November 1999
Part No. 001-7780-500
3. Follow the instructions onthe screen and adjust for
the best demodulated square wavewith minimum
tilt and overshoot.
6.4 AUDIO DEVIATION
1. If manually selecting each test, click the “Tune”
button in the “Audio Deviation” box. Otherwi se,
this function is selected automatica lly when the
“Complete Tune” button is clicked.
2. Inject a 1 kHz signal at the level indicated on the
screen into the Mic Audio jack of the RPI (see
Section 6.1.2).
3. Monitor the transmit modulation signalwith a
communication monitorand follow the instructions
on the screen to adjust the wideband,narrow band,
and NPSPAC(see Section 1.2.5) deviation.
6.5 DATA DEVIATION
1. If manually selecting each test, click the “Tune”
button in the “Data Deviation” box. Otherwise,this
function is selected automaticallywhen the
“Complete Tune” button is clicked.
2. Monitor the transmit modulation signalwith a
communication monitorand follow the instructions
on the screen to adjust the wideband,narrow band,
and SMARTNET/SmartZone controlchannel
data deviation.
6.6 SQUELCH ADJUST
The input level to the noise squelch circuit is set
by R13 on the IF board, and the squelchthreshold
level is set by the PCTune software. The factory
setting of R13 should not needto be changed, so step 3
which follows can normally be skipped.Proceed as
follows to set the squelch:
1. If manually selecting each test, click the “Tune”
button in the “Squelch” box. Otherwise,this func-
tion is selected automatically when the “Complete
Tune” button is clicked.
2. Connect an RF signal generator to the antennajack
using a 6 dB or greaterpad. Set the generator for the
channel frequency and modulation indicatedon the
screen.
3. If R13 must be adjusted(see preceding), remove the
transceivercover and connect power as described in
Section 6.1.6. Temporarilyset the squelch for “50”
on the “Squelch” screen and adjust R13 (see Figure
6-3) so that the squelchjust opens (audio is heard) at
8-9 dB SINAD.
4. Readjustthe squelch level as indicated on the screen
so that the squelch opens and closesbetween the
indicated SINAD levels.
6.7 RSSI ADJUST
NOTE: Improperlysetting the RSSI levels can result in
degraded SmartZone roamingoperation. Therefore,
do not change the default settings unless you are
familiar with how roaming will be affect ed.
The function which adjusts the RSSI levels is
available only by clicking the “Tune”button in the
“RSSI” box. It is not displayed in the Complete Tune
mode for the reason just described.The default values
that are programmed by clicking the “Program
Defaults” button (see Section 6.1.5) should not be
changed unless you are familiar withhow these levels
control site switching in a SmartZonesystem.