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seA MEASUREMENTS
NOTE
This monitor
is
designed
for use with
a
67KHz
as used with stereo.
1. SeA
Injection (Unmodulated)
and approved only
and 10%
SeA
injection
Depress DISPLAY SELECT
SCA
INJ NARROW-MAIN pushbutton and place
METER
MOD/HOLD/AUTO
switches in
MOO
position.
CHANNEL A
meter
wil1
read
SeA
in-
jection on the PILOT scale through an
FCC
specified narrow filter.
The
SCA
must
unmodulated for an accurate reading.
The SCA
PRESENT
lamp will
light
at
approximately
injection.
Main
channel
0 - 15KHz
modulation will be dis
played on the
CHANNEL
B meter.
2.
SeA
Injection {Modulated}
Depress
DISPLAV
SeA INJ WIDE-seA
MOO pushbutton and place
METER MOD/HOLD/AUTO switches in MOD position.
CHANNEL
A
meter will read
SeA
Injec on on the PILOT scale through a wide filter.
This
lter allows in-
on to be monitored while modulating the
SCA.
3.
SeA
Modulation
Set monitor up as in 3-5-2 above.
Place SCA OEV switch in 4KHz or
6KHz position as desired.
This sets the deviation for 100%.
CHANNEL B
meter will indi
SeA
Modulation with
FCC
semi-peak ballistics.
4.
SeA
Distortion
High impedance 150usec deemphasized
SeA
audio is available at the
SeA
AUDIO jack for connection to a distortion test set.
5.
SCA Signal to Noise
Depress DISPLAY
SELECT
SeA INJ WIDE-seA
MOD pushbutton and place
CHANNEL
B
METER MOD/HOLD/AUTO switch in AUTO position.
Modulated the
mi
th a unmodulated
SeA.
Depress CHANNEL B METER DE EMP push-
button.
Meter will autorange to give noise reading.
Reading will be made
with 150usec deemphasis.
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