Promax US TV EXPLORER II, User Manual

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USER’S MANUAL. US TV EXPLORER II
01/2008 Page 47
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3)
Code Rate
Also known as Viterbi ratio. It defines the ratio between the number of data bits
and actual transmission bits (the difference corresponds to the control bits for
error detection and correction).
It permits to choose between 1/2 , 2/3 and 6/7 .
FREQ:
CH:
C/N:
» POWER:
MER:
CBER:
VBER: 0.2
51.5
10.9
dB
dBµV
dB MHz
kHz
MHz
1936.01
11686.0
---
32
10 30 50 70 90 110 130
9.7E-4
5.2E-8
MPEG-2
» SIGNAL:
» SYSTEM:
FRAME RATE:
CHANNEL BW:
» SPECTRAL INV:
» CODE RATE:
SYMBOL RATE
ROLL OFF
» POLATIZATION
DSS
NTSC
60Hz
37.12MHz
OFF
6/7
20000kSymb
0.20
HORIZ/IZQ.
CONFIGURATION
Figure 23.- Screen of measurement configuration ( DSS signals).
4)
Polarization
It affects to the signal reception in the SAT band (satellite). It allows to select the
signal polarization among
Vertical/Right (vertical and circular clockwise) and
Horizontal/ Left (horizontal and circular counterclockwise) or, to deactivate the
polarization (
OFF
).
5)
Sat Band
Selects the High or Low frequency band for satellite channel tuning.
6)
LNB Low Osc.
Sets the LNB low band local oscillator.
7)
LNB High Osc.
Sets the LNB high band local oscillator.
5.14 Selecting the Measurements
The types of measurements available depend on the operating band (terrestrial or
satellite) and the type of signals (analogue or digital).
Terrestrial band - Analogue channels:
Level Level measurement of the currently tuned carrier.
Video / Audio Video carrier to audio carrier ratio.