Motorola DR 3000 Transceiver Performance Testing, General, Setup, Am, Cw, Fm Fm, Ptt Off

Chapter 3 Transceiver Performance Testing

3.1General

The MOTOTRBO Repeater meets 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.

NOTE: Although these radios function in digital and analog modes, all testing is done in analog mode.

3.2Setup

Supply voltage is 120/240 VAC. The equipment required for alignment procedures is connected as shown in the Repeater Tuning Equipment Setup Diagram, Figure 4-2.

Initial equipment control settings should be as indicated in Table 3-1. Table 3-2 lists Receiver Performance Checks information.

Table 3-1. Initial Equipment Control Settings

Service Monitor

Monitor Mode: Power Monitor

RF Attenuation: -70

AM, CW, FM: FM

Oscilloscope Source: Mod

Oscilloscope Horizontal: 10 mSec/Div

Oscilloscope Vertical: 2.5 kHz/Div

Oscilloscope Trigger: Auto

Monitor Image: Hi

Monitor Bandwidth: Narrow

Monitor Squelch: middle setting

Monitor Vol: 1/4 setting

Test Set

Speaker set: A

Speaker/load: Speaker

PTT: OFF