Motorola PR400 - Manual (Page 126)

March 19, 2009 PMR150
4-2 Performance Checks: RF Test Mode
Initial equipment control settings should be as indicated in Table 4-1 and should be the same for all
performance checks and tuner alignment procedures.
4.3 RF Test Mode
When the PR400 radio is operating in its normal environment, the radio's microcomputer controls the
RF channel selection, transmitter key-up, and receiver muting, according to the customer codeplug
configuration. However, when the unit is on the bench for testing, alignment, or repair, it must be
removed from its normal environment using a special routine, called RF TEST MODE. This mode
allows bench testing of the radio at various test frequencies across the entire band, at both high and
low transmit power (if applicable), at various channel spacings, and with different coded or carrier
squelch types. Any customer specific programming in the radio will not be changed or affected by use
of the RF Test Mode..
Figure 4-2. Side Button Locations
Table 4-1. Initial Equipment Control Settings
Service Monitor Test Set Power Supply
Monitor Mode: Power Monitor Spkr set: A Voltage: 7.5 Vdc
RF Attenuation: -70 Spkr/load:
Speaker DC on/standby:
Standby
AM, CW, FM: FM PTT: OFF Volt Range: 10 V
Oscilloscope Source: Mod
Oscilloscope Horiz: 1 0 mSec/Div
Oscilloscope Vert: 2.5kHz/Div
Oscilloscope Trig: Auto
Monitor Image: Hi
Monitor BW: Nar
Monitor Squelch: mid CW
Monitor Vol: 1/4 CW Current: 2.5 A
Note: Radio Setup Requirement
Ensure at least one Conventional Personality Channel is programmed on the radio for RF
Test Mode to function properly.
P1
P2
1
2
3
4
5
6
7
8
9
*
0
#
Side Button 1
Side Button 2