Icom IC-725 Service Manual page 24

SECTION 6 ADJUSTMENT PROCEDURES
6-1 PREPARATION BEFORE SERVICING
፳ REQUIRED TEST EQUIPMENT x
EQUIPMENT GRADE AND RANGE EQUIPMENT . GRADE AND RANGE
AC power supply Output voltage : 13.8 V DC Input impedance : 50 kQ/DC or better
Current capacity | : 30 A or more AC milli-voItmeter Measuring range ` : 10 mV—10 V
Measuring range : 107-200 W External speaker Impedance : 80
Frequency range : 1.8—30 MHz
RF power meter
(terminated type)
Impedance : 500 Measurement capability: 1 A and 30 A
SWR : Less than 1.2 : 1 Audio generator Frequency range : 300--3000 Hz
Frequency counter | Frequency range : 0.1~100 MHz Output level : 1-00۷
Frequency accuracy ` +1 ppm or better Attenuator Power attenuation : 40 or 50 dB
Sensitivity : 100 mV or better Capacity - 150 W or more
RF voltmeter Frequency range : 0.1—100 MHz Spectrum analyzer | Frequency minimum : At least 90 MHz
Measuring range : 0.01--10 V
Spectrum bandwidth : +100 kHz or more
Oscilloscope Frequency range ` DC~20 MHz
Measuring range : 0.01—10 V
Standard signal Frequency range : 0.1—30 MHz
generator (SSG) Output level : ሙ127-፦17 dBm
(0.1 HV—32 ጠሃ)
₪ CONNECTION
Attenuator
40 or 50 dB
Standard signal
generator
Spectrum
analyzer
RF power meter
200 W/50 О
to the
antenna
connector
CAUTION:
DO NOT connect the
signal generator while
transmitting.
AC to [EXT SP]
іо DC power socket
AC power supply
13.8 V/30 A
to [MIC]
* [MIC] connector (Front panel view)
Pin 1 MIC Audio
Pin 7 MIC GND
generator
6