4 - 1
SECTION 4 ADJUSTMENT PROCEDURES
4-1 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
: 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 k
Ω
/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
: 0.1–300 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
‘
‘
CONNECTIONS
to the antenna connector
to DC cable
Standard signal
generator
—17 to —125 dBm
(32 mV to 0.13 V)
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
—
+
Black
Red
RF power meter
50 ‰ / 1—50 W
