Promax 10 SE, Руководство пользователя

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USER’S MANUAL. PROMAX-10 Premium
Page 20 11/2008
Figure 13.- SCAN configuration menu.
4.2.2.1 SCAN mode configuration
In the SCAN operating mode, pressing the
CONFIG key [14] will access the configuration menu
for this mode.
This menu permits to change three
parameters: THRESHOLD , REFERENCE LINE and
POWER MEASUREMENT . To access to any of
them, turn the rotary selector [9] until it appears
shaded and next press the selector, then the value of the parameter will appear shaded
and turning the selector you will be able to modify its value. Finally, to validate the new
value, press the rotary selector [9] again.
CONFIG SCAN
THRESHOLD OFF
LINE OFF
POWER MEAS CHAN
REF.
a) THRESHOLD
It defines the minimum level to show channel on the display (OFF or between 21
and 120 dBµV). If the threshold is deactivated (OFF), on the SCAN representation
will appear all the active channels of the channel plan with a level higher than
20 dBµV. Otherwise, if we define a level for the THRESHOLD parameter, channels
with a level lower than the threshold value will not be displayed.
b) REFERENCE LINE
It permits to activate or to deactivate (OFF) a reference line on the SCAN graph
(between 21 and 120 dBµV). This reference line allows to establish judgements of
channel level acceptance just with a glance at the SCAN screen.
c) POWER MEASUREMENT
It allows to define if the measurement of the power is carried out on the channel
bandwidth (
CHAN ) indicated by the MARKER or over the full band between 5 and
863 MHz (
∑
PWR ).
IMPORTANT
To leave the SCAN operating mode configuration menu, just press the key of the
operating mode you wish to access.
4.2.3 CHANNEL-FREQUENCY operating mode
The CHANNEL-FREQUENCY operating mode provides the following
measurements:
Analogue channels : - Video carrier level.
- Carrier / Noise (C/N) ratio.
- Video / Audio (V/A) ratio.
- Audio Carrier Level.
- CSO-CTB intermodulation distortion measurement.