Brukerveiledning

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.
2 Power the repeater from either an AC or DC source.
3 Launch the Tuner application and click Read to read the softpot values.
4 In the tree view, select RX, then select Rx Rated Volume.
5 Set the Communication Analyzer to output a -47 dBm RF signal modulated with a 1 kHz tone at
60% of full deviation on the tuning frequency.
The tuning frequency is the value displayed on the Tuner GUI under the heading Frequency
Points.
NOTE: 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
environment.
Programmed TPL and DPL squelch requirements are automatically disabled for the
tuning frequency while in the Tuner environment.
6 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.
MN003557A01-AL
Chapter 8 : SLR 1000 Programming and Tuning
66
Applicant: Motorola Solutions
Equipment Type: ABZ99FT3096B / 109AB-99FT3096B
Tune-Up Procedure
Exhibit D1 3 of 11