Icom IC-M401E User Manual

5 - 1
SECTION 5 ADJUSTMENT PROCEDURES
5-1 PREPARATION
■ REQUIRED TEST EQUIPMENT
EQUIPMENT
DC power supply
RF power meter
(terminated type)
Frequency counter
FM deviation meter
DC voltmeter
Digital multi-meter
Distortion meter
GRADE AND RANGE
Output voltage : 13.8 V DC
Current capacity : 10 A or more
Measuring range : 1–50 W
Frequency range : 100–300 MHz
Impedance : 50 Ω
SWR : Less than 1.2 : 1
Frequency range : 0.1–300 MHz
Frequency accuracy : ±1 ppm or better
Sensitivity : 100 mV or better
Frequency range : 30–300 MHz
Measuring range : 0 to ±10 kHz
Input impedance : 50 kΩ/V DC or better
Input impedance : 10 MΩ/V DC or better
Frequency range : 1 kHz ±10 %
Measuring range : 1–100 %
EQUIPMENT
Audio generator
Standard signal
generator (SSG)
Oscilloscope
AC millivoltmeter
External speaker
Attenuator
Dummy load
GRADE AND RANGE
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : 0.1–300 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Frequency range : DC–20 MHz
Measuring range : 0.01–20 V
Measuring range : 10 mV–10 V
Input impedance : 4 Ω
Capacity : 5 W or more
Power attenuation : 40 or 50 dB
Capacity : 50 W or more
Resistance : 50 Ω
Capacity : 100 W or more
‘‘
CONNECTIONS
to the antenna connector
to DC cable
Standard signal
generator
–17 to –125 dBm
(32 mV to 0.13 µV)
CAUTION:
DO NOT transmit while SSG is
connected to the antenna connector.
DC power supply
13.8 V /15 A
Frequency
counter
FM deviation
meter
Attenuator
40 dB or 50 dB
+
–
to EXT Speaker jack
Black cap
(EXT SP jack)
Red line
Black line
RF power meter
50 Ω / 1–50 W
Distortion meter
Speaker

Icom IC-M401E Specifications

General

Type	Marine VHF Transceiver
Waterproof Rating	IPX7
Mode	FM
Antenna Impedance	50 Ω
Receiver Sensitivity	0.25μV (12dB SINAD)
Operating Temperature	-15°C to +55°C
Modulation	FM
Output Power	25 W
Channels	USA, INT, CAN channels
Power Supply	13.8 V DC
Current Drain	1.5 A (at 1 W)
Spurious Emissions	< -70 dBc
Frequency Stability	±10 ppm
Adjacent Channel Selectivity	70 dB
Spurious Response	70 dB
Intermodulation Rejection	> 70 dB
Adjacent Channel Power	> 70 dB