5 - 1
SECTION 5
ADJUSTMENT PROCEDURE
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REQUIRED TEST EQUIPMENTS
When adjusting IC-E2820, following test equipments and JIG cable (modified 8-pin modular jack; see the illust below) are required.
EQUIPMENT
GRADE AND RANGE
EQUIPMENT
GRADE AND RANGE
DC power supply
Output voltage : 13.8 V DC
Current capacity : More than 20 A
Audio generator
Frequency range : 300–3000 Hz
Output level : 1–500 mV
RF power meter
(terminated type)
Measuring range : 1–100 W
Frequency range : 100–600 MHz
Impedance : 50
Ω
SWR : Less than 1.2 : 1
Standard signal
generator (SSG)
Frequency range : 0.1–1 GHz
Output level : 0.1
µ
V to 32 mV
(–127 to –17 dBm)
Frequency counter
Frequency range : 0.1–600 MHz
Frequency accuracy : ±1 ppm or better
Sensitivity : 100 mV or better
AC millivoltmeter
Measuring range : 10 mV to 10 V
Terminator
Impedance : 50
Ω
Capacity : More than 100 W
Modulation
Analyzer
Frequency range : 30–600 MHz
Measuring range : DC to ±10 kHz
Attenuator
Power attenuation : 40 dB
Capacity : More than 100 W
5-1 PREPARATION
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ENTERING ADJUSTMENT MODE
q
Connect the JIG cable to the
MICROPHONE CONNECTOR
(see the illust above).
w
Push and hold the both of
[MAIN•BAND]
keys, then turn power ON.
DUP
MONI
TONE
DTMF
LOW
PRIO
M/CALL
MW
V/MHz
SCAN
V/MHz
SCAN
M/CALL
MW
MA
IN
B
A
N
D
MA
IN
B
A
N
D
DUAL BAND TRANSCEIVER
REF
NOTE:
This display is example only.
[V/MHz•SCAN]
Selects the next adjustment item.
[M/Call•MW]
Selects the previous adjustment item.
[MAIN•BAND] (Right band)
• Stores the set value
• Adjusts the value
for the item automatically.
[DIAL] (Right band)
Adjusts the value
for the item manually.
[PWR]
[MAIN•BAND] (Left band)
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KEY ASSIGNMENTS IN THE ADJUSTMENT MODE
Entering adjustment mode, the function display shows adjustment item and conditions as below.
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JIG CABLE
8-pin modular jack
q
iuytrew
q
w
e
r
t
y
u
i
8V
MICU/D
EXTMIC
PTT
MICE
MIC
GND
MICIN
y
(MIC)
w
(MICU/D)
u
(GND)
r
(PTT)
u
(GND)
t
(MICE)
AUDIO GENERATOR
(300–3000 Hz/1–500 mV)
+ −
22 k
Ω
33 k
Ω
[PTT]
+ −
AC MILLIVOLT METER
(10 mV to 10 V)
JIG cable
Main unit
Controller
To the
MICROPHONE CONNECTOR
<SETTING>
Frequency : 1 kHz
Level
: 20 mV rms*
1
80 mV rms*
2
