Preparation Before Servicing - Icom ic-775 Service Manual

SECTION
5
ADJUSTMENT PROCEDURES
5-1
PREPARATION
BEFORE
SERVICING
REQUIRED TEST EQUIPMENT
EQUIPMENT
GRADE AND RANGE
EQUIPMENT
GRADE AND RANGE
RF
power meter
(terminated type)
Measuring range
Frequency range
Impedance
SWR
10-300
W
1.8-30
MHz
50
Q
Less
than 1.2
:
1
AC
millivoltmeter
Measuring range
:
1
0
mV
-
1
0
V
DC
voltmeter Input
impedance
:
50 k£2/DC
or better
Ammeter Measurement
capability
:
1
A
and 30
A
Frequency counter
Frequency range
Frequency accuracy
Sensitivity
0.1
-100
MHz
±1
ppm
or better
1
00
mV
or berrer
Audio
generator
Frequency range
Output
level
300-3000 Hz
1-500
mV
Attenuator
Power
attenuation
Capacity
50
or
60
dB
150
W
or
more
RF
voltmeter
Frequency range
Measuring range
0.1
-100
MHz
0.01-10
V
Spectrum analyzer
Frequency range
Spectrum
bandwidth
At
least
90
MHz
±100 kHz
or
more
Digital
multimeter Input
impedance
1
0
MQ/DC
or better
Standard
signal
generator (SSG)
Frequency range
Output
level
0.1
-100
MHz
0.1
pV-32mV
(-127
to
-17 dBm)
FM
deviation
meter
Frequency range
Measuring range
At
least
30
MHz
0
to
±10 kHz
Modulation analyzer
Frequency range
Measuring range
At least
30
MHz
0-100%
Distortion
meter
Frequency range
Measuring range
1
kHz
±10%
1-100%
External
speaker
Impedance
Max.
input
power
80
5
W
Oscilloscope
Frequency range
Measuring range
DC
-100
MHz
0.01-10
V
Terminator Resistance
Capacity
50 and
1
50
O
150
W
or
more
CONNECTION
5-1