— 22 —
(7)
(8)
(9)
(10)
(11)
DEMOD
METERING
The
SELECT
button
(11)
associated with
DEMOD
METERING
cycles the two lower bargraph displays
(7)
among their various readout options, each iden-
tified with an associated LED indicator
(8)
,
(9)
,
(10)
.
The default selection displays left- and right-
channel program audio
(8)
. Alternatively, stereo
sum-and-difference
(9)
may be metered. All pro-
gram audio measurements are quasi-peak-respond-
ing above an indicated level of –30dB, and average-
responding below the –30dB point.
When the
SELECT
button
(11)
is cycled to measure
AM NOISE
(10)
, a
relative
reading of AM carrier
noise is displayed on the upper of the bargraph
readout pair, and the lower readout is blanked.
Although a meter reading of 0dB does correspond
to 100% carrier amplitude modulation, meter scal-
ing is not the annotated linear-dB function below
this point, and the measurement should be consid-
ered a relative (more
/
less) one. When
AM NOISE
(10)
is selected, the incidental AM component is
heard in the headphones.
THE RECEIVER SECTION (RIGHT SIDE)
(21)
(19)
(25)
(26)
(18)
(17)
(12)
(13)
(3-6)
(20)
(16)
(15) (22) (23)
(24) (27)
(14)
(12)
(13)
(14)
DIGITAL
READOUT
The
SELECT
button
(14)
cycles the digital LED
readout
(12)
among its several display functions,
and the two up/down
ADJUST
buttons
(13)
change
appropriate parameters. What actually is shown
on the four-digit readout depends on what meas-
urement function is active. Stay tuned, this will all