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TRILITHIC
Model One Operating Manual
– 47
To set the reference level and the scale
automatically, press
F1
(AUTO). The
Model One will select the optimal scope
for your system.
If you prefer to set the reference level and
scale yourself, press
F3
(
↓
,
↑
) (see page
40 for more information).
To adjust the reference level, press
F1
(REF) and then press
F1
(REF–) or
F2
(REF+).
To change the scale, press
F3
(
↓
,
↑
) from
the main CHANNEL SPECTRUM SCAN-
NING screen and then press
F2
(SCALE)
until you have selected the desired scale
(2, 4, 10, or 20dB).
At any time, you can restore the Model
One to the optimal levels by pressing
F1
(AUTO).
You may wish to stop the scanning
process so that you can study the graph
without losing the current data. In the
main CHANNEL SPECTRUM SCANNING
screen, simply press
F2
(HOLD). The
scanning marker will stop moving. To
resume scanning, press
F2
(TRIG).
LIMIT DISPLAY
If LIMIT DISPLAY is set to YES in the
MEASUREMENTS menu (see
LIMIT
SETUP
page 25), the Channel Spectrum
Scanning display will show the limit lines
for the minimum video level and maximum
∆
video level.
Basic Operation
