Harman 930 User Manual

FM ALIGNMENT
INSTRUMENTS: FM SIGNAL GENERATOR, VTVM OSCILLOSCOPE
DISTORTION METER
SET, SELECTOR TO FM AUTO
FM SIGNAL GENERATOR
TUNING DIAL OUTPUT INDICATOR
STEPS
CONNECTED TO FREQUENCY
SETTING CONNECTED TO
NO
SIGNAL
1
INPUT
90 MHz CW
Weakest
2
signal
90 MHz
possible
FM Antenna
VTVM &
terminal
Oscilloscope
at Tape
106 MHz CW
output
3
Weakest 106 MHz
Signal
possible
4
Repeat steps 1, 2 & 3 until no further improvement is possible
90 MHz
400 Hz 100% 90 MHz VTVM&
5
MOD
Osei 11 oscope
FM Antenna
at Tape
terminal output
90 MHz
400 Hz 100%
6
MOD 90MHz
50uV
7
90 MHz 90MHz Collector
cw
of TR705
AM ALIGNMENT
INSTRUMENTS: AM SIGNAL GENERATOR, VTVM
SET SELECTOR SWITCH TO "AM"
INPUT SIGNAL MUST BE KEPT AS LOW AS
POSSIBLE TO AVOID AVC ACTION EXCEPT STEP 5.
SIGNAL GENERATOR
TUNING DIAL OUTPUT INDICATOR
STEPS
CONNECTED TO FREQUENCY
SETTING
CONNECTED TO
TR203 Base
455 KHz
Quiet point VTVM &
1 Through
(400Hz 30%
on the BAND Oscilloscope
A0.01uF
MOD)
600 KHz
2 (400 Hz 600 KHz
Use loop 30% MOD)
Antenna
1400 KHz
3
(400 Hz 1400 KHz
30%MOD)
4 Repeat steps 2 & 3 until no further improvement is possible.
Use loop
Antenna 600 KHz
5
(input
(400 Hz
600 KHz VTVM
signal
30% MOD)
& Oscilloscope
level
10
mv/m)
4
ADJUST
ADJUST FOR
Zero center
T102 meter must
(TOP)
be Zero
NOTE: Must
not be tuned
to stations
LO, LA,
LR1, LR2,
T101 TOP
& Bottom
T102 Maximum
Bottom reading on
Signal
CT4, CT5,
Strength
CT6,CT7, Meter
T101 TOP
& Bottom
T102
Minimum
Bottom Distortion
FM Meter
25%
Level Pot
Distortion
L702 Minimum DC
Voltage
ADJUST
ADJUST FOR
T203 Maximum
(Primary &
reading &
Secondary
Minimum
& T204)
Distortion
T202 (OSC)
Maximum
& L904
reading
T201
CT3 (OSC)
&CT1,
CT2
T204
Minimum
distortion

Harman 930 Specifications

General

Brand	Harman
Model	930
Category	Receiver
Language	English