Signal Generator - Sharp Rg-F551G Serviceanleitung

RG-F551G/553G
RG-F552E/554E
- MW/LW IF/RF ADJUSTMENT
| anigttton
| anigttton
400 Hz, 30%, AM modulated
'FRE- |
TEST FRE- ADJUST-
STEP QUENCY
MW/LW IF (Set the receiving frequency band to MW.)
Figure 14—1 AM "IF" CURVE |
IF 450 kHz | 281 kHz T1 01 — | Adjust for
T102 best "IF''
|
curve
j—- To Antenna Socket
:
Z=50 ohms * = 30 ohms
MW RE (Set the receiving frequency band to MW.)
|
C=10pF —
Z Output impedance of signal generator
To chassis GND
'MW SIGNAL LEVEL: Collector of 151
Fig. 16) Et .
ae its
'7
roc - et
Adjust for
maximal
output.
i 1,395kHz | 1,395kHz
LW RF (Set the receiving frequency band to LW.)
272 kHz
-
prior to that for MW.
Signal
Generator~
Adjust for
maximal
output.
MW SIGNAL LEVEL ADJUSTMENT
| SIGNAL
GENERATOR
50 dB, Unmodulated
FRE- |
"ADJUST-
QUENCY MENT
DISPLAY
| 999 kHz | 999 kHz | VAI51 2+0.1V
AUTO NOISE CUT LEVEL ADJUSTMENT
SWITCH
POSITION
6. 3 kHz, 30 %, FM modulated = 0 dB
FRE- C Y | ADJUST- | . _ REMARKS
QUENCY | DISPLAY | MENT | a
98.0 MHz | 98.0 MHz { VR1
50 dB |
FREQUENCY
Antenna —
Socket
Adjust VR1 so that the out-
put is changed from 0 dB to
—3 dB when the input is
reduced from 74 dB to 45 dB.
Figure 14—3 AUTO NOISE CUT LEVEL
-—14-