Motorola SYMBOL MT2000 Series, Service Manual

Page: 29 / 170

7
Transceiver
Performance Testing
3
General
The HT 1000, JT 1000, MT 2000, MTS 2000, and MTX series radios
have been prepared to meet published specifications through their
manufacturing process, with the use of laboratory-quality test
equipment of highest accuracy. The recommended field service
equipment approaches the accuracy of the manufacturing equipment
with a few exceptions. Accuracy of the equipment must be maintained
in compliance with the manufacturer’s recommended calibration
schedule.
Setup
Supply voltage can be connected from the battery eliminator. The
equipment required for alignment procedures is connected as shown
in the Radio Alignment Test Setup diagram.
Initial equipment control settings should be as indicated in the
following table, and should hold for all alignment procedures except
as noted in Table 4.
* When testing TX deviation, where the modulation is greater than
1kHz, set the Service Monitor low pass filter (LPF) to 15kHz.
** The Test Set MT/PL switch controls internal/external audio
switching.
Test Mode
RF Test Mode,
HT 1000/JT 1000 Radios
NOTE: This note applies to software version R02.09
and earlier. If the radio is placed in TEST MODE
Table 4 Equipment Initial Control Settings
SERVICE MONITOR TEST SET POWER SUPPLY
Monitor Mode: Pwr Mon
RF Attn: –70
AM, CW, FM: FM
O'scope Source: Mod
O'scope Horiz: 10mSec/Div
O'scope Vert: 2.5kHz/Div
O'scope Trig: Auto
Monitor Image: Hi
Monitor BW: Nar
Monitor Squelch: mid CW
Monitor Vol: 1/4 CW
Spkr set: A
Spkr/load:
Speaker
PTT: OFF
(center)
Voltage: 7.5Vdc
DC on/standby:
Standby
Volt Range: 10
Current: 2.5