Icom IC-R8500 - Page 22

RECEIVER
ADJUSTMENT (CONTINUED)
ADJUSTMENT ADJUSTMENT
CONDITIONS
MEASUREMENT
VALUE
ADJUSTMENT
POINT
UNIT
LOCATION
UNIT ADJUST
HF TOTAL
GAIN
1
•
Displayed Iraq.
:
14.09650
MHz
«
Mode ;
USB
•
Connect an
SSG to the antenna connec-
tor
for
0. 1
-30
MHz
(50
Q
ANT) and
set
as:
Frequency :
14,10000 MHz
Level : 1
mV*
(-47
dBm)
Modulation :
OFF
«
Receiving
Rear
panel
Connect an AC milli-
voltmeter to the
[EXT
SPJ
jack with an
8
0
load.
1.5
kHz audio Front
panel
[DIAL]
1.0V(0dB) (AF GAIN]
2
•
Set
an
SSG
level
as;
OFF
100 mV (-20 dB) MAIN
R139
v;uHF
TOTAL GAIN
1 Displayed
freq.
: 173.0185 MHz
«
Mode : USB
Connect an
SSG to the
antenna
connec-
tor
for
30-2000
MHz and
set as:
Frequency ; 173.02000 MHz
Level
:
1
mV*
(
- 47 dBm)
Modulation : OFF
Receiving
Rear
panel
Connect
an AC milli-
voltmeter
to the
[EXT SP) jack with an
8
0
toad.
1.5 kHz audio
Front
panel
[DIAL]
1.0 V (OdB)
[AF GAIN]
2
•
Set an SSG level as: OFF
100 mV
(-20
dB) MAIN
R504
NOISE
1
Displayed freq.
:
173.00000 MHz
Rear Connect an osdilo- Minimum noise
MAIN LIB,
L21
BLANKER Mode JS8 panel
scope to the [EXT SP) level
»
Connect an SSG to the antenna connec-
jack with an
8
Q
load.
tor for
30
-2000
MHz
and
set as:
Level
10 uV*
(-87
dBm)
and apply following signal
to
the anten-
na connector.
100
msec.
L
1 m
sec.
•
INB]
;
ON
•
Receiving
CENTER 1 Displayed freq.
:
173.02000
MHztJf MAIN Connect
an osdilo- At the
point where MAIN R233
STOP Mode : FM
scope to CP3. the voltage just be-
«
Connect an
SSG to the antenna connec-
comes
0 V
for
tor for
30-2000
MHz and set as:
equidistant
values
Frequency
173.02000 MHz
both above and
Level
:32pV*(-77dBm)
below the
dis-
Modulation
: OFF
played
frequency
•
Receiving
in 1 00
Hz
tuning
steps.
AM
CENTER
1
•
Displayed
freq.
:
173.01670 MHz
and MAIN
Connect an osdilo- At the point where
MAIN R447
173.01B90 MHz
scope to CP3. the
voltage
jusi
*
Mode : AM
becomes 0 V at
•
Connect an
SSG to the antenna-
173.01870
MHz
connector tor
30-
2000 MHz and set
as;
and 5 V at
Frequency
173.02000 MHz
173.01890
MHz.
Level
:32uV(-77dBm)
Modulation
: OFF
•
Receiving
’*Thi& output level of a standard signal generator (SSG)
is indicated
as SSG‘s open circuit.
5-5