SECTION 4. ADJUSTMENT
PROCEDURE
¤
GENERAL CONNECTION AND UNIT LOCATION
¤
REQUIRED EQUIPMENTS
4-1 PREPARATION
EQUIPMENT
GRADE AND RANGE
EQUIPMENT
GRADE AND RANGE
Short plug
Modifi ed 3.5 mm (1/8’’) monoral plug
Audio generator
(AG)
Frequency range : 300–3000 Hz
Output level
: 1–500 mV
RF voltmeter
(50
Ω
terminated)
Measuring range
: 20–200 mV
Frequency range
: 0.1–600 MHz
AC Millivoltmeter
Measuring range : 10 mV to 10 V
RF power meter
(50
Ω
terminated)
Measuring range
: 5–120 W
Frequency range
: 0.1–600 MHz
SWR
: Less than 1.2 : 1
Digital multimeter
Measuring range : 0–10 V (Voltage)
1–30 A (Current)
Input impedance : More than 50 k
Ω
Frequency counter
Frequency range
: 0.1–600 MHz
Frequency accuracy : ±1 ppm or better
Input level
: Less than 1 mW
External speaker
Input impedance : 8
Ω
Capacity
: More than 2 W
Standard signal
generator (SSG)
Frequency range
: 0.1–600 MHz
Output level
: 0.1 mV to 32 mV
(–127 to –17 dBm)
Spectrum Analyzer
Frequency range : At least 90 MHz
Bandwidth
: 100 kHz
Dummy Loads
Impedance
: 50
Ω
and 100
Ω
/120 W
CAUTION!:
SAVE the originally programmed contents (Memory channel contents, set mode settings, etc.), before starting
adjustment. When all adjustments are completed, these contents in the transceiver may be cleared.
[DC 13.8V]
[MIC]
[EXT-SP] [REMOTE]
To the antenna connectors
[ANT1]/[ANT2]/
[144 MHz]/[430MHz]
<Viewing from the BOTTOM side>
PLL
UNIT
MAIN UNIT
RF-A
UNIT
CTRL
UNIT
Audio
generator
PTT
[MIC]
AC millvolt
meter
DUMMY LOAD
(50
Ω
/120 W)
RF POWER METER
(120 W/50
Ω)
AMMETER
(0.1–30 A)
Fuses
30 A
DC power supply
(13.8 V/30 A)
⊕
−
Black
Red
⊕
Red
⊕
−
Black
−
−
Supplied DC cable
STANDARD SIGNAL GENERATOR
(0.1–60 MHz)
AC MILLIVOLT METER
(10 mV to 10 V)
EXT. SPEAKER
(2 W/8
Ω)
3.5(d) mm monoral plug
+
–
+
–
NEVER TRANSMIT
while an SSG is connected.
FREQUENCY COUNTER
(0.1–1 GHz)
ATTENUATOR
(40/50 dB/100 W)
<Viewing from the TOP side>
PA-A
UNIT
RF-B UNIT
PA-B UNIT
(Short)
4 - 1
