Promax 10 SE, Руководство пользователя

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Premium USER’S MANUAL. PROMAX-10
11/2008 Page 29
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The CTB SHOWED parameter
allows defining the method of
measurement for the CTB.
IN CH (within
the channel) is the suitable method
whenever the carrier of the channel in study can be
turned off. If it is not possible, as approach, any other
channel (free) can be defined for the measurement of
the CTB.
Figure 25.- CH-FR configuration. 2/2.
Parameters
∆
FCS01 ,
∆
FCS02 ,
∆
FCS03
and
∆
FCS04 allow you to modify the frequencies where the CSO is measured (the
PROMAX-10 Premium admits values from -0.5 to -2.50 and from 0.5 to 2.5 MHz).
These parameters are modified digit to digit, beginning by the one of smaller weight.
Finally, the
∆
FCH parameter allows you to set the frequency displacement
(offset) for those channels having a frequency displaced respect to the correct one
(
PROMAX-10 Premium admits values from —2.00 to 2.00 MHz).
You can also edit
∆
FCH and the parameters QAM in the channel configuration
by the EDIT CHANNEL menu.
IMPORTANT
To exit the CHANEL-FREQUENCY CONFIGURATION menu, press the mode of
operation to which you want to access.
4.2.3.2 FREQUENCY Tuning
Pressing the CH-FR [10] key you
can switch between tuning by channel or
tuning by frequency and vice versa.
To verify you are working on the Frequency
Tuning mode, check what field is shaded:
CHANNEL POWER 71dBuV
BW=9.1MHz C/N= 27dB
INTEGRATING ...
20
60
40 80 100 120
C02 CCIR 50.50MHz
Figure 26.- Frequency tuning.
- If the channel is shaded, then you are
working in Channel Tuning Mode.
- If the frequency is shaded, then you are working in Frequency Tuning
Mode.
In the frequency tuning mode, the instrument becomes a receiver with a
resolution of 10 kHz within the band from 5 to 863 MHz. In this mode you can tune any
signal within this band, including leakage pilots or telephone and communications
signals.