Motorola Mototrbo - 10.7 Modulation Limit Alignment; 10.7.1 Tuning Procedure (with no Tx Data and no PL)

3
Apply a 1 kHz signal at the desired input level to pin #1 or #22 (in reference to ground) on the
Aux connector. Ground connections provided by the Aux connector are pins: 9, 16, 17, 18, and
19. See Figure 45: Auxiliary Connector on page 88.
NOTICE: Optimally, it is recommended to load pin #1 or #22 with the application source
impedance used during normal operation of the repeater.
4 Launch the Tuner application and click the “Read” button to read the softpot values.
5 Select “Tx Audio Level” under the Tx menu in the tree view (See Figure 46: Tx Menu Tree (Tx
Audio Level) on page 89).
Figure 46: Tx Menu Tree (Tx Audio Level)
6 Enter the tuning frequency into the Communication Analyzer (the value displayed on the Tuner
GUI under the heading of “Frequency Points”).
7 Click the “PTT Toggle” button within the Tuner environment to key up the repeater.
8
Adjust the softpot value until 60% of the rated system deviation (RSD) is achieved.
NOTICE: The Tuner aligns this parameter in a 12.5 kHz channel spacing, so 60% is 1.5
kHz of deviation. If the CPS is set for 25 kHz operation, the repeater will automatically
scale the deviation by a factor of two when it is outside the Tuner environment.
9 Click the “PTT Toggle” button within the Tuner environment to de-key the repeater.
10 Click “Write” to save the new tuned softpot value into the repeater’s codeplug.
10.7
Modulation Limit Alignment
This feature is to set the modulation limit of the SLR 5000 Series Repeater.
NOTICE: A modulation limit alignment is not needed if the repeater is used in repeat mode.
This is always the case when the repeater is in digital mode.
10.7.1
Tuning Procedure (with no Tx Data and no PL)
Prerequisites:
NOTICE: If data or PL signaling is applied to Pin 13 of the J7 connector, proceed to Tuning
Procedure (with Tx Data or PL) on page 91.
Procedure:
1 Connect the repeater’s antenna port to the attenuation pad, if necessary, before connecting to
the Communication Analyzer.
2 Power the repeater from either an AC or DC source.
3 Apply a 1 kHz signal at 1.2 Vrms to Pin 1 of the J7 backplane connector.
• Signal ground is Pin 9 of the J7 backplane connector.
4 Launch the Tuner application and click the “Read” button to read the softpot values.
Chapter 10: SLR 5000 Series Programming and Tuning
Motorola Solutions Confidential
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