USER’S MANUAL. PROMAX-10
Premium
Page 22
05/2004
4.2.2 SCAN operating mode
The SCAN operating mode shows, in a single screen, the signal level of all the
active channels in the channel plan by means of a bar-graph. In addition, the exact level
of any particular channel may be measured by simply placing the marker over it (only
analogue channels).
To access to this operating mode,
press the SCAN key [11]. The top line of the
screen will display the channel name (C44),
the tuned frequency (655.25 MHz) and the level (65
dBµV) of the channel the marker is over. The marker
can be moved by turning the rotary selector [9].
The channel is selected when it is shaded.
To change the span (shown
bandwidth), press the rotary selector [9] (the
span field is activated) and then turn it. The
span is variable from the entire band (full span) to 10
MHz in the following steps:
10, 30, 100, 300 MHz y full span.
By pressing the rotary selector [9]
again, you can change the reference level,
in other words, on turning the rotary
selecter [9] the graph is displaced
vertically.
To modify the tuned channel, press the rotary
selector [9] again, the channel field will be activited and
then turning the rotary selector you will be able to
change it.
Figure 10.- SCAN mode,
Ref. 90 dB
µ
V.
The attached figure shows an horizontal line at
45 dBµV. This line allows to establish judgements of
channel level acceptance easily. To activate and
define this reference line see the Scan configuration
menu (section 4.2.2.1).
Figure 11.- SCAN mode with
reference line at 45 dB
µ
V.
Figure 8.- SCAN mode, full span.
Figure 9.- SCAN mode, span 100 MHz.
