Preparation Before Servicing - Icom IC-725 Service Manual

6-1
PREPARATION
BEFORE
SERVICING
REQUIRED TEST EQUIPMENT
EQUIPMENT
GRADE AND RANGE
EQUIPMENT
GRADE AND RANGE
AC
power
supply
Output voltage 13.8
V DC
DC
voltmeter Input
impedance
:
50
kQ/DC
or better
Current capacity
30
A
or
more
AC
milli-voltmeter
Measuring range
;
10
mV—
10
V
RF power
meter
(terminated
type)
Measuring range
Frequency range
Impedance
10-200
W
1
mht
External
speaker Impedance
;
8
Q
50
0
Ammeter Measurement
capability:
1
A
and 30
A
SWR
Less than
1
.2
:
Audio generator
Frequency range
:
300—3000 Hz
Frequency counter Frequency range
0.1—100
MHz
Output
level
:
1—500
mV
Frequency accuracy
Sensitivity
±1
ppm
or better
100
mV
or better
Attenuator
Power
attenuation
:
40
or
50
dB
Capacity
:
150
W
or
more
RF
voltmeter
Frequency range
Measuring range
0.1-100
MHz
0.01-10 V
Spectrum
anaiyzer Frequency
minimum
:
At ieast
90
MHz
Spectrum bandwidth
:
±100
kHz
or
more
Oscilloscope
Frequency range
Measuring range
DC—
20
MHz
0.01-10 V
Standard
signal
generator (SSG)
Frequency range
Output
ievel
0.1-30 MHz
-127'
—
17
dBm
(0.1
pV-32
mV)
-
CONNECTION
6
—
1