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June 1999
68P02945C75-A
7-1
Section 7
Radio Tuning Procedure
Radio Tuning Procedure
General
An IBM PC (personal computer) and RSS (Radio
Service Software) are required to align the radio. Refer
to the applicable RSS Manual for installation and setup
procedures for the software.
To perform the alignment procedures, the radio must
be connected to the PC, RIB (Radio Interface Box), and
Test Set as shown in Figure 7-1.
All SERVICE screens read and program the radio
codeplug directly; you do NOT have to use the RSS
GET/SAVE functions to program new tuning values.
CAUTION
Do NOT switch radios in the middle of
any SERVICE procedure. Always use
the EXIT key to return to the MAIN
menu screen before disconnecting the
radio. Improper exits from the SERVICE
s c re e n s m a y l e a v e t h e r a d i o i n a n
improperly conÞgured state and result
in seriously degraded radio or system
performance.
The SERVICE screens use the concept of the ÒSoftpotÓ,
an analog SOFTware controlled POTentiometer used
for adjusting all transceiver alignment controls.
Each SERVICE screen provides the capability to
increase or decrease the ÔsoftpotÕ value with the
Figure 7-1.
Radio Alignment Test Setup
7.5 VDC POWER SUPPLY
RIB RLN4008B
PROGRAMMING CABLE/
BATTERY ELIMINATOR
HKN9857
110 VAC
COMPUTER
RTX4005B
TEST SET CABLE
RKN4034
PORTABLE TEST SET
RTX4005B
SYSTEM ANALYZER
R2000 SERIES
RF CABLE
AUDIO
IN
AUDIO
OUT
ANTENNA
ADAPTER
RADIO