Adjustment Procedures; Preparation - Icom IC-U82 Service Manual

SECTION 5

5-1 PREPARATION

REQUIRED TEST EQUIPMENTS
EQUIPMENT
Output voltage
DC power supplies*
Current capacity
Measuring range
Frequency range
RF power meter
(terminated type)
Impedance
SWR
Frequency range
Frequency counter Frequency accuracy : ±1 ppm or better
Sensitivity
Frequency range
Audio generator
Output level
*; For UT-118 adjustment only.
CAUTION!:
BACK UP the originally programmed contents (Memory channels, Call signs, Common settings, etc.) in the transceiver
using CS-V82
When all adjustments are completed, these contents in the transceiver will be cleared.
• CONNECTION
Standard signal generator
0.1 µV to 32 mV
(–127 dBm to –17 dBm)
DO NOT transmit while
an SSG is connected to
the antenna connector.
FM
deviation meter
RF power meter
0.1–20 W/50 Ω
• ADJUSTMENT MODE DISPLAY
Adjustment item

ADJUSTMENT PROCEDURES

GRADE AND RANGE
: 5.0 V DC
8.0 V DC
: 1 A or more
: 0.1–20 W
: 100–500 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–500 MHz
: 100 mV or better
: 300–3000 Hz
: 1–500 mV
before starting adjustment.
CLONING SOFTWARE
to the antenna connector
Attenuator
20 dB / 30 dB
Frequency
counter
EQUIPMENT
FM deviation meter
Standard signal
generator (SSG)
Oscilloscope
AC millivoltmeter
Attenuator
To [MIC] jack
To [SP] jack
IC-U82
Operating frequency
5 - 1
GRADE AND RANGE
Frequency range : 30–500 MHz
Measuring range : 0 to ±10 kHz
Frequency range : 0.1–500 MHz
: 0.1 µV to 32 mV
Output level
(–127 to –17 dBm)
Frequency range : DC–20 MHz
Measuring range : 0.01–10 V
Measuring range : 10 mV to 10 V
Power attenuation : 20 or 30 dB
Capacity : More than 5 W
AC millivoltmeter
Audio generator
• JIG
(GND)
3-conductor 3.5 (d) mm ( 1 /8") plug
(CLONE)
68 kΩ