Motorola Commercial Series, Базовое руководство по обслуживанию

Страница: 31 / 100

Chapter 4 Performance Checks
4.1 General
The radios meet published specifications through their manufacturing process by utilizing high-
accuracy laboratory-quality test equipment. The recommended field service equipment is as accurate
as the manufacturing equipment with few exceptions. This accuracy must be maintained in
compliance with the manufacturer’s recommended calibration schedule.
4.2 Power-Up Self Test
Applying power to the radio by using the on/off volume control, starts a self-test routine which checks
the RAM, EEPROM hardware and EEPROM checksum. Pressing and holding SB1 while turning on
the radio causes the self-test routine to check for the ROM checksum as well. If these checks are
successfully completed, the radio will generate the Self-Test Pass Tone. If the self-test is not
successful, a Self-Test Fail Tone is heard.
Supply voltage can be connected from the battery eliminator. The equipment required for alignment
procedures is connected as shown in the Radio Performance Checks Setup diagram (
Figure 4-1 ).
Figure 4-1. Radio Performance Checks Setup
RIB
RLN4008
RIB Power Supply
Rx
Gnd
Data
Tx Data
Radio
Computer Interface
Cable
Program/Test Cable
PMKN4004