Transceiver Performance Testing; General; Rf Test Mode - Motorola PR860 Basic Service Manual

Chapter 3

Transceiver Performance Testing

3.1

General

These radios meet published specifications through their manufacturing process by utilizing high
accuracy laboratory-quality test equipment. The recommended field service equipment approaches
the accuracy of the manufacturing equipment with few exceptions. This accuracy must be maintained
in compliance with the manufacturer's recommended calibration schedule.
3.2

RF Test Mode

When the radio is operating in its normal environment, the radio's microcontroller controls the RF
channel selection, transmitter key-up, and receiver muting. However, when the unit is on the bench
for testing, alignment, or repair, it is removed from its normal environment and cannot receive
commands from its system. Therefore, the internal microcontroller does not key the transmitter or
unmute the receiver. This prevents the use of a normal tuning procedure. To solve this problem, a
special "test mode" is incorporated into the radio.
Note 1: On VHF/UHF models, the radio must be in conventional mode.
Note 2: The test mode procedure that follows assumes that the Customer Programming Software
Front Panel Access screen has both the FPA and RF TEST boxes selected. Select from the
programming screen to enable or disable certain features of the radio RF test mode.
• FPA entry not selected blocks all test modes.
• FPA entry selected and RF TEST not selected blocks RF test mode.
• FPA entry selected and RF TEST selected enables all test modes.
To enter the test mode of radio:
1. Turn the radio on.
2. Within ten seconds after the self test is complete, press 'side button 2' (Figure 3-1) five
times in succession.
3. Press 'side button 1' the number of times listed in Table 3-1 to get the number of corre-
sponding beeps.
4. Turn radio off to exit test mode.
5. To access all 14 test modes on a 4-channel radio, the frequency knob and mechanical
stop sleeve must be removed (see paragraph 3-8 exploded view diagram).
Button Test (For models with "G" in location 10 of model number Example: AAH25RCH6
1. Press the orange button; "3/1" appears which indicates that switch 3 is in the closed condition.
2. Release the orange button; "3/0" appears which indicates that switch 3 is in the open condition.
3. Rotate the mode selector knob; "4/0"through "4/15" appears which indicates that knob 4 is in
mode position 1 through 15.
4. Rotate the volume control; "2/0" through "2/255" appears.
5. Press SB1, view "96/1"; release, view "96/0".
6. Press SB2, view "97/1"; release, view "97/0".
3-1
G
B6AN)