Installation Manual

Table Of Contents
8.4
Tuning the Reference Oscillator
The reference oscillator of the SLR 1000 Repeater provides the timing reference used for all frequency
synthesizers and ensures their frequency accuracy.
This procedure is used to adjust the alignment of the reference oscillator. This alignment procedure
should be done as maintenance schedules and regulations require. See Repeater Tuning Setup
on
page 72 for the repeater tuning equipment setup.
Prerequisites: Obtain the following:
Wattmeter (Communication Analyzer)
Service monitor or counter
20 dB pad
Standard Type A to Type B USB cable
Personal computer
Procedure:
1 Connect the repeater transmitter antenna port to a Communication Analyzer.
2 Power the repeater from either an AC or DC source.
3 Launch the Tuner application, and click Read to begin reading the repeater tuning software
values.
4 In the tree view, select TX, then select Ref Oscillator.
5 Configure the currently operating frequency into the Communications Analyzer.
6 To key up the repeater, click PTT Toggle.
7 Adjust the working softpot value until the frequency is within the performance specifications (+/-
40 Hz for UHF) from the frequency point.
8 To de-key the repeater, click PTT Toggle.
9 To save the tuned softpot value into the repeater codeplug, click Write.
Return to Process
SLR 1000 Programming and Tuning on page 71
8.5
Tuning the Rx Audio Level Set
The procedure outlined in this section is used to set the receive output audio level from the repeater for
a given RF deviation of the received RF signal. Perform this procedure any time the Rx audio level
requires adjustment.
Prerequisites: Obtain the following:
Wattmeter (Communication Analyzer)
Service monitor or counter
20 dB pad
Standard Type A to Type B USB cable
Personal computer
Procedure:
1 Connect the repeater receiver antenna port to the Communication Analyzer.
MN003557A01-AF
Chapter
8: SLR 1000 Programming and Tuning
73