Motorola Mt1500 Basic 6881094c09 B Manual

Performance Checks
13 4a. Press Side Button 1 to stop the displays and put the radio into the Control Top and 
Keypad test mode (display radio). The test mode menu “CH TEST” will be 
displayed. Go to the “Control Top and Keypad Test Mode (Display Radio)” section 
on page 14.
NOTE:Each press of Side Button 1 will toggle between “CH TEST” and
“RF TEST.”
OR
4b. Press the Top Programmable Button to stop the displays and put the radio into the 
RF test mode (display radio). The test mode menu “1 CSQ.” will be...

Performance Checks
14
Control Top and 
Keypad Test 
Mode (Display 
Radio)This test mode is used to verify proper operation of all radio buttons and switches if a failure 
is suspected.
1. Press and hold the Top Programmable Button; all segments on the display will light, 
and the LED on the control top will illuminate a red color.
2. Release the Top Programmable Button; “3/0” appears, indicating that the To p  
Programmable Button is in the open condition.
3. Press the Top Programmable Button again;...

Performance Checks
15
-Press 7, “55/1” appears; release, “55/0” appears.
-Press 8, “56/1” appears; release, “56/0” appears.
-Press 9, “57/1” appears; release, “57/0” appears.
-Press *, “58/1” appears; release, “58/0” appears.
-Press #, “59/1” appears; release, “59/0” appears.
All Display Models—
-Press V, “128/1” appears; release, “128/0” appears.
-Press h, “129/1” appears; release, “129/0” appears.
-Press U, “130/1” appears; release, “130/0” appears.
-Press the left-hand D key on the top row of keys,...

Performance Checks
16emitted by the radio after the button press (for example, five beeps indicates channel 
5).
2. Pressing Side Button 2 will scroll through and access test environments as shown in 
Table 8 on page 14. The test environment is represented by the number of beeps 
emitted by the radio after the button press (for example, 11 beeps indicate AST). 
NOTE:Transmit into a load when keying a radio under test.
Control Top and 
Keypad Test 
Mode (Non-
Display Radio)This test mode is used to verify...

Performance Checks
17 Table 9. Receiver Performance Checks
Te s t  N a m eSystem AnalyzerRadioTe s t  S e tComments
Reference 
FrequencyMode: PWR MON 4th channel 
test frequency*
Monitor: Frequency error. Input 
at RF In/OutTEST MODE, 4 
CSQ output at 
antennaPTT to continuous (during 
the performance check)Frequency error to be 
≤ ±1.3 kHz
Rated AudioMode: GEN 
Output level: 1.0mV RF 4th 
channel test frequency*
Mod: 1 kHz tone at 3 kHz 
deviation
Monitor: DVM: ac VoltsTEST MODE, 4 
CSQPTT to OFF...

Performance Checks
18Table 10. Transmitter Performance Checks
Te s t  N a m eSystem AnalyzerRadioTe s t  S e tComments
Reference 
FrequencyMode: PWR MON 4th 
channel test frequency*
Monitor: Frequency error. 
Input at RF In/OutTEST MODE, 4 
CSQPTT to continuous 
(during the performance 
check).Frequency error to be ≤ ±1.3 
kHz.
Power RF As above As above, 
4 CSQAs above Refer to Maintenance 
Specifications page in front of 
manual.
Voice 
ModulationMode: PWR MON 4th 
channel test frequency* 
atten to...

19
Radio Alignment
Procedures
6
Introduction to 
This SectionThis section describes both receiver and transmitter radio alignment procedures.
GeneralA personal computer (PC) and tuner software are required to align the radio. Refer to the 
applicable manual for installation and setup procedures for the software. To perform the 
alignment procedures, the radio must be connected to the PC and to a universal test set as 
shown in  Figure 4. Radio Alignment Test Setup on page 11.
Select Tuner from the START...

Radio Alignment Procedures
20The alignment screens introduce the concept of the “softpot,” an analog SOFTware-
controlled POTentiometer used for adjusting all transceiver alignment controls.
Each alignment screen provides the ability to increase or decrease the softpot value by 
using a slider or the screen’s UP/DOWN arrow keys (  ), or by entering the new value 
from the keyboard. A graphical scale on the display indicates the minimum, maximum, and 
proposed value of the softpot; see Figure 6....

Radio Alignment Procedures
21
Radio InformationFigure 7 shows a typical Radio Information screen.
Reference 
Oscillator 
AlignmentAdjustment of the reference oscillator is critical for proper radio operation. Improper 
adjustment will result not only in poor operation, but also in a misaligned radio that will 
interfere with other users operating on adjacent channels. For this reason, the reference 
oscillator should be checked every time the radio is serviced, or once a year, whichever 
comes first. The...

Radio Alignment Procedures
22-Press the green Automatic Operation button on the analyzer. 
-Press the FREQ key.
-Ty p e 7.1 followed by SPCL button to set the 8901B_ modulation analyzer for 
maximum accuracy.
To align the reference oscillator:
1. Select the Reference Oscillator alignment screen. See Figure 8.
2. Left-click the PTT Toggle button on the screen to make the radio transmit. The screen 
indicates whether the radio is transmitting.
3. Measure the transmit RF frequency with your service...