Icom ID-1 Service Manual

5 - 5
5-3 TRANSMITTER ADJUSTMENT
ADJUSTMENT ADJUSTMENT CONDITION
MEASUREMENT
VALUE
ADJUSTMENT
UNIT LOCATION UNIT ADJUST
YGR
CURRENT
[ FPGA D.C.
voltage ad-
justment
/DV I ]
1• Preset R1086 and R1087 maxi-
mum counterclockwise.
• Preset "IQ Direct-current output"
ON.
• Operating freq. : 1300.00 MHz
• Mode : DV mode
• Connect an RF power meter or
50
Ω
dummy load to the antenna
connector.
• Transmitting
Rear
panel
Connect an ammeter
between the DC power
supply and ID-1.
100 mA higher
from the pre-
set position.
MAIN
unit
R1087
2 100 mA higher
from step 1.
MAIN
unit
R1086
REFERENCE
FREQUENCY
[ REF Crystal
adjustment]
1 • Operating freq. : 1300.00 MHz
• Mode : FM mode
• Connect an RF power meter or
50
Ω
dummy load to the antenna
connector.
• Transmitting
Rear
panel
Loosely couple a fre-
quency counter to the
antenna connector.
1300.0000 MHz PC
screen
[ REF
Crystal
adjust-
ment]
FM
CARRIER
[ FPGA D.C.
voltage ad-
justment
/FM I]
1 • Operating freq. : 1300.00 MHz
• Mode : FM mode
• Connect an RF power meter or
50
Ω
dummy load to the antenna
connector.
• Transmitting
MAIN
unit
Connect a digital
multimeter or an oscillo-
scope to the check point
"CP30".
The same
voltage that
during in DV
mode (TX)
at the check
point "CP30".
PC
screen
[ FPGA
D.C.
voltage
adjust-
ment
/FM I]
[ FPGA D.C.
voltage ad-
justment
/FM Q]
2 • Transmitting The same
adjustment as
step 1, if need.
PC
screen
[ FPGA
D.C.
voltage
adjust-
ment
/FM Q]
OUTPUT
POWER
[ TX output
adjustment]
1 • Operating freq. : 1300.00 MHz
• Mode : FM mode
• TX power : High
• Transmitting
Rear
panel
Connect an RF power
meter to the antenna
connector.
11 W MAIN
unit
R1251
FM
DEVIATION
[ FM
modulation
adjustment]
1 • Operating freq. : 1270.00 MHz
• Mode : FM mode
• Connect an audio generator to
the [MIC] connector and set as
:
1.0 kHz/20 mVrms
• Set a Modulation analyzer as:
HPF : OFF
LPF : 20 kHz
De-emphasis : OFF
Detector : (P–P)/2
• Transmitting
Rear
panel
Connect a modulation
analyzer to the antenna
connector through an
attenuator.
±4.35 kHz MAIN
unit
R1704
DSP INPUT
LEVEL
[ DSP input
level adjust-
ment]
1 • Operating freq. : 1270.00 MHz
• Connect an audio generator to
the [MIC] connector and set as
:
1.0 kHz/20 mVrms
• Connect an RF power meter or
50
Ω
dummy load to the antenna
connector.
• Transmitting
LOGIC-1
unit
Connect an oscillo-
scope to the check point
"CP207".
750 mVp-p MAIN
unit
R1707

Icom ID-1 Specifications

General

Brand	Icom
Model	ID-1
Category	Transceiver
Language	English