Brukerveiledning

9 Adjust the softpot value until the maximum deviation is 92% of the rated system deviation
(RSD).
This adjustment 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.
Channel Spacing
(kHz)
RSD (kHz) 92% of RSD (kHz) Tolerance (Hz)
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 codeplug, click Write.
8.7.2
Verifying the Modulation Limit (with no Tx Data and no PL)
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 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.
Signal ground is Pin 4 of the Aux connector.
5 Key up the repeater by grounding Pin 2 of the Aux connector and measuring the deviation
NOTE: Radio Management must have Pin 2 configured as an active low with the PTT
function.
6 De-key the repeater.
The deviation should meet the limits shown in the following table.
Channel Spacing
(kHz)
Relative Standard Deviation (RSD)
(kHz)
92% of RS
(kHz)
Tolerance
(Hz)
12.5 2.5 2.3 +0/-50
20.0 4.0 3.68 +0/-80
MN003557A01-AL
Chapter 8 : SLR 1000 Programming and Tuning
69
Applicant: Motorola Solutions
Equipment Type: ABZ99FT3096B / 109AB-99FT3096B
Tune-Up Procedure
Exhibit D1 6 of 11