SECTION 5 ADJUSTMENT PROCEDURES
5 - 1
5-1 PREPARATION BEFORE SERVICING
■
REQUIRED TEST EQUIPMENT
DC power supply
RF power meter
(terminated type)
Frequency counter
RF voltmeter
Modulation analyzer
Distortion meter
Oscilloscope
Digital multimeter
Spectram analyzer
Standard signal
generator (SSG)
AC millivoltmeter
DC voltmeter
DC ammeter
Audio generator
Attenuator
External speaker
Terminator
EQUIPMENT
GREDE AND RANGE
EQUIPMENT
GREDE AND RENGE
Output voltage
: 13.8 V DC
Current capacity
: 30 A or more
Measuring range
: 10–200 W
Frequency range
: 1.8–30 MHz
Impedance
: 50
Ω
SWR
: Less than 1.2 : 1
Frequency range
: 0.1–100 MHz
Frequency accuracy
: ±0.5 ppm or better
Sensitivity
: 100 mV or better
Frequency range
: 0.1–100 MHz
Measuring range
: 0.01–10 V
Frequency range
: At least 30 MHz
Measuring range
: 0–100 %
Frequency range
: 1 kHz ±10 %
Measuring range
: 1–100 %
Frequency range
: DC–20 MHz
Measuring range
: 0.01–10 V
Imput impedance
: 10 M
Ω
/DC or beter
Frequency range
: At least 90 MHz
Spectraum bandwidth
: 100 kHz or more
Frequency range
: 0.1–100 MHz
Output level
: 0.1 µV–32 mV
(–127 to –17 dBm)
Measuring range
: 10 mV–10 V
Input impedance
: 50 k
Ω
/V DC or better
Measurement capability: 1 A and 30 A
Frequency range
: 300–3000 Hz
Measuring range
: 1–500 mV
Power attenuation
: 50 or 60 dB
Capacity
: 150 W or more
Input impedance
: 8
Ω
Capacity
: 5 W or more
Resistance
: 50 and 150
Ω
Capacity
: 150 W or more
‘
‘
CONNECTIONS
Modulation analyzer
RF power meter
Spectrum analyzer
Attenuator
Distortion meter
DC power supply
Ammeter
Standard signal
generator
CAUTION !
DO NOT
transmit while
an SSG is connected to
the antenna connector.
to the antenna connector
to [DC 13.8 V]
to [EXT SP]
Speaker
Audio generator
PTT
,
.
IC-78
• Microphone connector
(Front panel view)
Pin 1
Pin 7
Pin 6
Pin 5
