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2) Level offset.
3) Scale.
4) Averaging.
5) Detector.
6) Hold.
7) Scan mode.
8) Span.
Span, MHz
Filter bandwidth, kHz
9) Tuning.
Alphanumeric keys are used enter channel number or frequency directly. Enter the
frequency value in MHz or the channel number and press «ENTER». After you press
«ENTER» the selected channel or frequency value are set in the center of the screen.
The set mode parameters are indicated on the upper panel of the display screen.
4.3.5. TV Channel Parameters Measurement in Full Scan Mode
The Full Scan mode is used for measurements of channel levels in full frequency
span. There are five screen views in this mode:
1) Full Scan.
2) Limit.
3) Limit rel.
4) Tilt.
5) Tilt rel.
Possible values are Manual and Auto. In the Auto mode
the amplitude scale position is set automatically. In
Manual mode the scale position can be set manually by
pressing the « » and « » keys.
Setting amplitude scale range values: 5dB or 10dB.
Selecting averaging degree for measured values. Possible
values: Off, Low, Medium, High.
Selecting measuring detector type: Peak or RMS. Peak
(Peak) detector is used to measure level of TV signals
with analog modulation. Root-mean-square (RMS)
detector is used to measure broadband signals or to
search noise.
Enabling additional signal level trace. Possible values: Off,
Min, Max. When the additional trace is enabled, the
Analyzer screen displays the second signal line showing
minimum and maximum values obtained during scanning.
To reset the trace, press the «F6 / Reset» key.
Scanning mode. Possible values: Single, Quick, Precise.
In the Single sweep mode a single scanning is carried out
by pressing the «ENTER» key. The Quick continuous
scanning mode enables the quickest scanning by
decreasing the level measurement accuracy. The Precise
scanning mode allows for maximum accuracy of signal
level measurements.
Frequency scanning span. Possible span values and
corresponding measuring filter bandwidth values are given
in the table below.
10
20
50
250
Central frequency position setup mode. The Freq.
value selects the central frequency position tuning by
frequency. Position tuning by frequency is carried out by
entering the numeric value from the keypad. The Chann.
value selects the position tuning by channel number.
Full Scan Channel level measurement.
Measurement of channel level flatness.
Measurement of channel flatness in relative terms.
Tilt measurement at channel level tuning.
Tilt measurement at channel level tuning in relative terms.
23
50
100
200
250
1000 1000
Full,
400
800
1200
1000
1000
1000
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