Harman Kardon TU915 Technical Manual page 5

MPX
Free Run
Stereo
Threshold
e Connect the Stereo Modulator
to FM Signal Generator.
Connect FM Signal Genera-
tor to FM 3002 BAL Antenna
terminals through the 30082
balanced dummy.
e Connect the Frequency
Counter to TP4 (+) and TP5
(—).
e Connect the VTVM and Oscil-
loscope to the Fixed Output
jacks.
98.1MHz
(unmodula-
tion)
98.1MHz
19.00kHz + 0.02 kHz
98.1MHz 98.1MHz
Stereo FM indicator
lights at 30uV + 2dB
input.
SCA
Rejection
e Connect the Stereo Modulator
to FM Signal Generator.
Connect FM Signal Generator
to FM 30022 BAL Antenna
terminals through the 3002
balanced dummy. Apply
67kHz, 10% FM modulation
SCA signal to the SCA input
jack of Stereo Modulator.
e Connect the VTVM and
Oscilloscope to the Fixed
Output jacks through 19kHz
Low Pass Filter.
98.1MHz
Minimum output
Sub-carrir
Rejection
Separation
Separation
Balance
e Connect the Stereo Modulator
to FM Signal Generator.
Connect FM Signa! Generator
to FM 3002 BAL Antenna
terminals through the 300Q
balanced dummy.
e Connect the VTVM and
Oscilloscope to the Fixed
Output jacks.
98. 1MHz
98.1MHz
Minimum output at
19kHz pilot signal
only by Stereo Modu-
lator.
VR152
LPFi51
98.1MHz
98.1MHz
Adjust so that the
right channel output
becomes minimum
when only the left
channel of the Stereo
Modulator is modulat-
ed,
Adjust so that the left
channel output
becomes minimum
when only the right
channel of the Stereo
Modulator is modulat-
ed.
98.1MHz
|
With the VR192,
correct unbalance
between minimum
outputs the right and
left channels.
|
Repeat steps 10 and 11 for optimum sensitivity.
e es T a n T e ee