Global Radio Tuning Setup; Initial Test Equipment Setup; Figure 5-1: Radio Tuning Test Equipment Setup; Table 5-2: Initial Equipment Control Settings - Motorola HT750 - UHF/VHF/Low Band - Radio Service Manual

5-2
Radio Tuning, Programming, Cloning, Lowband Antenna Cutting Procedure, PassPort Tone Options, and Diagnostic Functions
5.2

Global Radio Tuning Setup

A personal computer (PC), Windows
radio. To perform the tuning procedures, the radio must be connected to the PC, radio interface box
(RIB), and test equipment shown in Figure 5-1.
Battery
Eliminator
7.5V Reg.
RLN4510
+12VDC
Power
Supply
Battery Block
0180305G54
AC Plug
120/230 Vac

5.2.1 Initial Test Equipment Setup

The supply voltage is connected to the radio using a Motorola battery eliminator, P/N
AA0180305G54. The initial test equipment (Figure 5-1) control settings are listed in Table 5-2.
NOTE: Refer to appropriate program on-line help files for the tuning procedures.
Monitor Mode: Power Monitor
RF Attenuation: -70
AM, CW, FM: FM
Oscilloscope Source: Mod
Oscilloscope Horizontal: 10mSec/Div
Oscilloscope Vertical: 2.5 kHz/Div
Oscilloscope Trigger: Auto
Monitor Image: Hi
Monitor BW: Nar
Monitor Squelch: mid CW
Monitor Volume: 1/4 CW
®
RF Adapter
HLN9756
3.5 mm to
Ferrule BNC
Radio
Program/
Test Cable
AARKN 4074
RIB Power Supply
0180357A57 (120V)
0180358A56 (230V)

Figure 5-1: Radio Tuning Test Equipment Setup

Table 5-2: Initial Equipment Control Settings

Service Monitor
95/98, and a global tuner program are required to tune the
30 dB Pad
Transmit
Double Male
30 dB Pad
BNC
RF Generator
Receive
Audio In
Test Box
RLN4460A
or B
DB15 DB9
RIB
RLN-4008
Computer Interface
Cable 3080369B72
Test Set
Speaker set: A
Speaker/load:
Speaker
PTT: OFF
Service Monitor
or Counter
Wattmeter
Tx
Audio Generator
Rx
Sinad Meter
AC Voltmeter
Tx Data
Rx
Data
Gnd
Power Supply
Voltage: 7.5Vdc
DC on/standby:
Standby
Volt Range: 10V
Current: 2.5A