Promax US TV EXPLORER 2 User Manual página 54

1) Channel BW (channel bandwidth)
Enables the channel bandwidth to be selected. The selection of this parameter is
essential for the correct operation of the tuner, as it affects the frequency
separation of the carriers.
2) Spectral Inv
If necessary, activate the Spectral inversion (On). Reception will be bad if
spectral inversion has been incorrectly selected.
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.
10
FREQ:
CH:
MPEG-2
Figure 22.- Screen of mesurement configuration (DSS signals).
4) Polarization
It affects to the signal reception in the SAT band (satellite). It allows to select the
the signal polarisation 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.
Page 46
USER'S MANUAL. US TV EXPLORER II
CONFIGURATION
» SIGNAL:
» SYSTEM: NTSC
FRAME RATE:
30 50 70 90 110
CHANNEL BW: 37.12MHz
1936.01 MHz C/N:
» SPECTRAL INV:
--- kHz » POWER: 51.5
» CODE RATE:
11686.0 MHz MER: 10.9
SYMBOL RATE 20000kSymb
32 CBER: 9.7E-4
ROLL OFF
5.2E-8
VBER:
» POLATIZATION HORIZ/IZQ.
DSS
60Hz
130
0.2 dB
OFF
dBµV
6/7
dB
0.20
10/2007