Motorola Solutions Inc. 99FT4100 Manual De Usuario

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NOTICE: Optimally, it is recommended to load pin #7 with application loading used
during normal operation of the repeater.

7 To save the new tuned softpot value into the repeater’s codeplug, click Write.

The procedure outlined in this section is used to allow adjustment of the transmitter audio level the
repeater is expecting at its Aux connector. Adjusting this level set has the effect of increasing or
decreasing RF signal deviation for a given transmit audio level. Perform this procedure any time the
transmitter audio level needs adjustment.

1 Connect the repeater’s transmitter antenna port to the Communication Analyzer.

2 Power the repeater from a DC source.

3 Apply a 1 kHz signal at the desired input level to pin #1 (in reference to ground) on the Aux

connector. The group connection provided by the Aux connector is pin-4. See 

Figure 24:

Auxiliary Connector on page 68

NOTICE: Optimally, it is recommended to load pin #1 with the application source
impedance used during normal operation of the repeater.

4 Launch the Tuner application and click Read to read the softpot values.

5 Under the TX menu in the tree view, select Tx Audio Level. (See

Figure 25: Tx Menu Tree (Tx

Rated Volume) on page 68

 ).

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

GUI under the heading of Frequency Points.

7 Click PTT Toggle to key up the repeater.

8 Adjust the softpot value until the desired receive audio level is achieved at pin #7 (in reference to

ground) on the Aux connector. The ground connection provided by the Aux connector is pin 4.

NOTICE: The Tuner aligns this parameter in a 12.5 kHz channel spacing, so 60% is 1.5
kHz of deviation. If Radio Management (RM) is set for 25 kHz operation, the repeater
automatically scales the deviation by a factor of two when it is outside the Tuner
application.

9 Click PTT Toggle to de-key the repeater.

10 To save the new tuned softpot value into the repeater’s codeplug, click Write.

MN003557A01-AA
Chapter 8:  SLR 1000 Programming and Tuning

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