Promax US TV EXPLORER II, Руководство пользователя

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USER’S MANUAL. US TV EXPLORER II
01/2008 Page 41
En
g
lis
h
EXIT CALIBRATE
10
0
-10
-20
FREC:
REF:
TEST:
ATT: MHz
dBµV
dBµV
dB
2130.99
100.3
77.6
22.7
1403.94
90.2
84.2
6.0
1294.89
84.7
80.7
4.0
Figure 17.- Attenuation measurements in an outlet plate.
In order to finish measuring, press the rotary selector [1] and select the ( EXIT )
option.
5.12 Spectrum exploration function (EXPLORER)
The Exploration function allows exploring the full frequency band in order to
identify the analogue channels and digital presents, in agreement with the configuration
set, over the active channel plan. In order to activate this function the [25] key must
be pressed until the EXPLORER screen appears.
TESTING CHANNEL SET:
66
67
68
69
FOUND: 12 / 101
PROCESS SUCCESSFUL
EXIT
PROMAX
8-VSB OK
UNIDENTIFIED
ANALOG: NTSC-M
NO SIGNAL
0 25 50 75 100%
SAVE AS: STATION1
Figure 18.- Spectrum exploration screen. EXPLORER .
When the instrument completes the exploration, a new channel plan is generated
based on the active channel plan. This new channel plan contains only the channels
that have been identified and the rest are removed. The equipment offers the possibility
of saving in memory the channel plan generated to use later. If the new channel plan is
not saved it will remain active until the instrument is powered off or some other plan is
loaded.