FIG. 20 IN PHASE BUT UNBALANCED
F I G . 21 OUT OF PHASE & U N B A L A N C E D
F I G . 22 OUT OF PHASE AND UNBALANCED
SEPARATION CHECK
A stereo program creates an image on the screen which
vanes between an elliptical and circular pattern. Although
the pattern is irregular and changing, it is possible to
judge the approximate amount of separation between
channels. To make this check make sure the spot is properly
centered, then:
1. Depress the STEREO button.
2. Set the preamplifier or other program source to
the stereo mode.
3. Adjust the GAIN control to obtain approximately a
2-inch display.
Stereo separation is usually dictated by the program
source. As you view the screen and listen to a stereo pro-
gram the pattern may follow several trends. When it ex-
tends outward in every direction and approximates a circle,
it is indicating excellent stereo separation between chan-
nels. An example is shown in Fig. 23.
FIG. 23 STEREO DISPLAY
If the pattern tends toward an elliptical shape, as in
Fig. 24, stereo separation is less than optimum.
F I G . 24 REDUCED S E P A R A T I O N
A pattern which tilts toward the left, as in Fig. 25 not
only suggests reduced stereo separation, but indicates an
out-of-phase condition in the program material In judging
any of the patterns just described, allow the program
material to play for enough time for a trend to develop in
the display.
LEVEL MODE
In the LEVEL mode of operation the left channel appears
as a left vertical column on the screen, while the right chan-
nel appears as a right vertical column. Depress the LEVEL
pushbutton and the display should agree with the one
shown in Fig. 26 during a stereo program.
Signals to be viewed are selected by the POWER LEVEL
switch. If the switch is in the PREAMP position, the pre-
L3