Icom IC-4008A - Section 5 Adjustment Procedures; Preparation

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
GRADE AND RANGE
Output voltage : 4.5 V DC
Current capacity : 1 A or more
Measuring range : 1 mW–1 W
Frequency range : 300–600 MHz
Impedance : 50 Ω
SWR : Less than 1.2 : 1
Frequency range : 0.1–600 MHz
Frequency accuracy : ±1 ppm or better
Sensitivity : 100 mV or better
Frequency range : 30–600 MHz
Measuring range : 0 to ±10 kHz
Input impedance : 50 kΩ/V DC or better
EQUIPMENT
Audio generator
Standard signal
generator (SSG)
Oscilloscope
AC millivoltmeter
External speaker
Attenuator
GRADE AND RANGE
Frequency range : 300–3000 Hz
Measuring range : 1–500 mV
Frequency range : 0.1–600 MHz
Output level : 0.1 µV–32 mV
(–127 to –17 dBm)
Frequency range : DC–20 MHz
Measuring range : 0.01–10 V
Measuring range : 10 mV–10 V
Input impedance : 8 Ω
Capacity : 300 mW or more
Power attenuation : 30 or 40 dB
Capacity : 1 W or more
CAUTION:
DO NOT transmit while SSG is
connected to the antenna connector.
to the RF test port J1
Standard signal
generator
–17 to –125 dBm
(32 mV to 0.1 µV)
Frequency
counter
FM deviation
meter
Attenuator
30 dB or 40 dB
RF power meter
50 Ω / 1–500 mW
DC power supply
4.5 V /1.0 A
–
+
ENTERING THE ADJUSTMENT MODE
Turn the transceiver power OFF.
While connecting the “TEST” on the RF board to “GND”, then turn power ON.
(See location at page 5-3)
CONNECTIONS