Transmitter And Receiver Adjustments - Icom IC-2100H Service Manual

3 TRANSMITTER AND RECEIVER ADJUSTMENTS

4
..
The receiver adjustments must
ADJUSTMENT ADJUSTMENT CONDITION
• Displayed frequency :
O UT P U T 1
POWER 145.000
146.000
• Output power
• Transmitting
•
Displayed frequency :
FM 1
DEVIATION 145.000
146.000
•
Output power
• Connect an audio generator to
the [MIC] connector and set as:
1 kHz/
1 kHz/
•TONE
• Set an FM deviation meter as:
HPF :
LPF : 20 kHz
De-emphasis : OFF
Detector
• Transmitting
• IF bandwidth
• Transmitting
SENSITIVITY 1 • Displayed frequency
145.000
146.000
• Connect an SSG to the antenna
connector and set as:
Level
Deviation
Modulation
• Receiving
Turn into squelch/S-meter setting
1 •
SQUELCH/
S·METER mode.
Connect a JIG to the [MIC)
(SQUELCH)
connector, then tum power
ON.
• Displayed frequency :
145.000
146.000
• R163
• Connect an SSG to the antenna
connector and set as:
Level
Deviation
Modulation
• Receiving
. .. . .
.
. . .. . .. ..... ...
(S•METER) 2 • Set an SSG as :
Level
Deviation
Modulation
•Receiving
°This output standard signal
level of the
performed after PLL ADJUSTMENTS.
be
UNIT
Rear
MHz [EUR, TPE, THA] Panel
MHz [ITA, USA, SEA, LA)
: High
Rear
MHz (EUR, TPE, THA] Panel
MHz [ITA, LA]
USA, SEA,
: L ow
50 mV [USA]
20 mV [other]
:OFF
50 Hz
: (P-P)/2
: Narrow
[EUR, ITA} only
MAIN
:
MHz [EUR, TPE, THAJ
A
MHz [I T USA, SEA. LA]
,
: 32 µv•
( - 77 dBm)
: ±3.5 kHz
: 1 kHz
Speaker
MHz [EUR, TPE, THA]
MHz (ITA, USA, SEA, LA]
: Max. clockwise
; 0.011 µv·
(-130 dBm)
: ±3.5 kHz
: 1 kHz
Display
µV*
: 1.0
(-107 dBm)
: ±3.5 kHz
kHz
: 1
(SSG) ls
generator indicated
MEASUREMENT
LOCATION
Connect the RF W [T
10
power meter to the 25 W [TPE]
antenna connector. 55 W [other]
±4.8
FM
Connect an
deviation meter to
the antenna con-
an
nector through
attenuator.
±2.D-±3.0
Maximum voltage
Connect a digital
multimeter or oscll-
loscope to check
point CP2.
At the point where
the signal just
appears.
Push and hold the (S.MW) key, or push
the [MW] key on the HM-98.
S/RF indicator
•Verify that S-meter shows
as SSG's
open circuit
4-3
ADJUSTMENT
POINT
VALUE
ADJUST
UNIT
A] MAIN
H
kHz MAIN
kHz
MAIN Adjust in
sequence
r
e
ly.
MAIN
53 (4
R49
8
R
6
Verify
p
e at d ·
e
l24,
l26,
L28,
l29
R163
dots).