Adjustment Procedures; Preparation - Icom IC-UR8050 Service Manual

SECTION 3

3-1 PREPARATION

REQUIRED TEST EQUIPMENT
EQUIPMENT
Output voltage
DC power supply
Current capacity
Measuring range
RF power meter
Frequency range
(terminated type)
Impedance
SWR
Frequency range
Frequency counter
Frequency accuracy : ±1 ppm or better
Sensitivity
Frequency range
FM deviation meter
Measuring range
Frequency range
Audio generator (AG)
Measuring range
CONNECTION
Pin 33 LI
Audio generator
Pin 14 GND
Pin 13 LO
AC millivoltmeter
Pin 7 GND
DC power supply
9 – 16 V/20 A
Standard signal
generator
RX
ANT
REG
BOARD
LOGIC UNIT
IC-UR8050
(TOP view)

ADJUSTMENT PROCEDURES

GRADE AND RANGE
: 9–16 V DC
: 20 A or more
: 1–100 W
: 300–600 MHz
: 50 Ω
: Less than 1.2 : 1
: 0.1–600 MHz
: 100 mV or better
: 30–600 MHz
: 0 to 10 kHz
: 300–3000 Hz
: 1–500 mV
J9 [ ACC (1) ] socket (Rear panel view)
19 14 13
33
37
DC POWER
SOCKET
TX
ANT
PA UNIT
RX
UNIT
TX UNIT
FRONT UNIT
VOL SQL
EQUIPMENT
Standard signal
generator (SSG)
Oscilloscope
DC voltmeter
AC millivoltmeter
Digital multimeter
Attenuator
Terminator
7 6 5
600 Ω
RF power meter
100 W/50 Ω
Attenuator
50 dB or 60 dB
Frequency counter
MIC
3 - 1
GRADE AND RANGE
Frequency range : 300–600 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Frequency range : DC–20 MHz
Measuring range : 0.01–20 V
Input impedance : 50 kΩ/V DC or better
Measuring range : 10 mV–10 V
Input impedance : 10 MΩ/V DC or better
Power attenuation : 50 or 60 dB
Capacity : 100 W or more
: 50 Ω
Impedance
Capacity : 100 W or more
: 600 Ω dummy
Impedance
CW: Clockwise CCW: Counterclockwise
Pin 6 DI
Audio generator
Pin 14 GND
1
20
Pin 5 DO
600 Ω
AC millivoltmeter
Pin 7 GND
FM deviation
meter
J5
GND
3
Audio generator
2 MOD
1
P1
Oscilloscope