emitor Satlook Digital NIT, Руководство пользователя

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Max hold is a very good function for, over a longer time period, watch a certain
frequency-range. This to see how/if temporary signals/disturbances can affect the
picture quality.
Adjust the frequency-bandwidth (see Function 3) and put the cursor on the
frequency (peak) to watch. Chose with button nr 1 the ”
Max hold ”-function. The
instrument starts to sample all top-values in the shown bandwidth and only updates
the presentation if there´s any new measured data with higher dB-values than the
previous measured.
Turn off the function by pressing the button nr 1 again (No hold).
Measured data can be stored. Read more about the Memory-function under section
3.9, Memory.
3.8.2. Reference cursor and signal to noise ratio (2)
SATLOOK Digital NIT has the capability to perform measuring of the signal/noise
alt. Picture-carrier/audio-carrier ratio.
The function is relatively difficult to implement fully automatic and a more simple,
manual, tool is used in this instrument.
Do like this:
•
Select function 2 Refmrkr
•
Tune in the ”right” frequency with the cursor (so it stands on the ”top” of the
signal to measure on).
•
Push button nr 1 (Ref set) and a new cursor appears on top of the earlier.
•
Turn the knob and place the cursor on another carrier or on the noise-floor.
•
The relation between cursor nr 1 and cursor nr 2 is presented in the lower
right hand corner of the picture-screen
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