Icom IC-7400, Service Manual, Page: 17 / 92

5 - 1
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION BEFORE S E RVICING
■
REQUIRED TEST EQUIPMENT
DC power supply
RF power meter
(terminated type)
Frequency counter
RF voltmeter
FM deviation meter
Modulation analyzer
Distortion meter
Oscilloscope
Audio generator
Standard signal
generator (SSG)
Digital multimeter
AC millivoltmeter
DC voltmeter
DC ammeter
Spectrum analyzer
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 : 1.8–200 MHz
Impedance : 50
Ω
SWR : Less than 1.2 : 1
Frequency range : 0.1–200 MHz
Frequency accuracy : ±1 ppm or better
Sensitivity : 100 mV or better
Frequency range : 0.1–200 MHz
Measuring range : 0.01–10 V
Frequency range : DC–200 MHz
Measuring range : 0 to ±5 kHz
Frequency range : At least 200 MHz
Measuring range : 0–100 %
Frequency range : 1 kHz ±10 %
Measuring range : 1–100 %
Frequency range : DC–20 MHz
Measuring range : 0.01–20 V
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : 0.1–200 MHz
Output level : 0.1 µV to 32 mV
(–127 to –17 dBm)
Imput impeadance : 10 M
Ω
/DC or beter
Measuring range : 10 mV–10 V
Input impedance : 50 k
Ω
/V DC or better
Measurement capability: 1 A/30 A
Frequency range : At least 90 MHz
Spectraum bandwidth : 100 kHz or more
Power attenuation : 50 or 60 dB
Capacity : 150 W or more
Input impedance : 8
Ω
Capacity : 5 W or more
Resistance : 50
Ω
and 100 or 25
Ω
Capacity : 150 W or more
‘ ‘
CONNECTIONS
[ANT1] [ANT2] [ANT 144MHz]
FM deviation meter
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 [SP]
Speaker
Audio generator
PTT
+
–
[MIC]
Terminator
2-conductor 3.5 (d) mm (
1
⁄
8
")
Shorten inner and outer terminals.
For entering the “ADJUSTMENT
MODE”, connected to [REMOTE].