Motorola Solutions Inc. 99FT4100 Manual De Usuario

This feature is to set the modulation limit of the SLR 1000 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.

1 Connect the repeater's antenna port to the attenuation pad, if necessary, before connecting to

the Communication Analyzer.

2 Power the repeater from a DC source.

3 Apply a 1 kHz signal at 1.2 Vrms to Pin 1 of the Aux connector.

• Signal ground is Pin 9 of the Aux connector.

4 Launch the Tuner application.

5 To read the softpot values, click Read.

6 Under the TX menu in the tree view, select Modulation Limit.

7 Enter the tuning frequency into the Communication Analyzer (the value displayed on the Tuner

application).

8 To key up the repeater, click PTT Toggle.

9 Adjust the softpot value until the maximum deviation is 92% of the rated system deviation

(RSD). This is tested in a 12.5 kHz channel spacing, so 92% of 2.5 kHz is 2.3 kHz.

10 Set the modulation limit to 92% so that any additional deviation incurred by the transmitter VCOs

over temperature is compensated for.

12.5

2.5

2.3

+0/ -50

11 To de-key the repeater, click PTT Toggle

12 To save the new tuned softpot value into the repeater's codeplug, click Write.

1 Connect the repeater's antenna port to the attenuation pad, if necessary, before connecting to

the Communication Analyzer.

2 Power the repeater from a DC source.

3 In Radio Management (RM), program the repeater with any frequency within the specified range

of the repeater under test, and set the repeater for low power and disable the repeat path.

4 Apply a 1 kHz signal at 1.2 Vrms to Pin 1 of the Aux connector.

MN003557A01-AA

Chapter 8:  SLR 1000 Programming and Tuning

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