Fm Mpx Alignment - Rotel Rpm-10 Technische Anleitung

FM IF and
Tuning and
Instruments: FM SignalGenerator (400Hz, 10096Modulated). H.D. Analyzer Oscilloscope AC VT IJM and Tuning Meter.
Step
Coupling
Antenna
terminal
2
3
Repeat steps 1
4
Antenna
5
terminal
6
7 Repeat steps 4 and 5 unit to further
8
Antenna
terminal
(I mV Input)
9
FM MPX
Instruments: FM Stereo Generator, AC VT VM and Oscilloscope.
Step
Coupling
Antenna
terminal
2
3 Check the stereo indicator
RF Alignment
Signal
Generator
Frequency
90MHz
106MHz
and 2 unit no further improvement
90MHz
106MHz
98MHz
improvement
98MHz
Alignment
Generator
Frequency
98MHz
pilot...
1 KHz..
Mod.
can be operated
Indicator
Tuning Dial
setti ng
L 106 (OSC)
90MHz
106MHz CT3
is noticed.
LIOI,
90MHz
and L 104 (RF)
CTI
106MHz
CT2
98MHz L106
is noticed.
98MHz L108 (upper core)
No interfering L 108 (iow core)
Tuning Dial
setti ng
VR301
98MHz
VR302
normally when pilot signal is reduce from 10% to 6%.
Calibration
Adjust
Maximum
on AC
(OSC)
L 102, L 103
(ANT) and
Maximum
(RF)
on AC
(OSC)
Minimum
on H.D. Analyzer.
Tuning Meter to
"Center"
Adjust
Stereo
light up.
best separation
Adjust for
reading
VTUM.
reading
VTUM.
reading
position.
Adjust for
indicator