Fracarro SIG7120 Instrucciones De Uso página 25

The following is the COFDM (OUTPUT) menu in detail:
COFDM
(OUTPUT)
Select the Forward Error
Correction
Select the guard
interval
Select the number of
carriers
Select the
constellation type
Select the spectrum
type
Select the output
level
Select the singletone
For the correct use, see paragraph 5.2 "INDICATIONS FOR PROGRAMMING".
OUTPUT FREQ. – sets the output frequency according to the channel (setting the country and the output chan-
nel) or according to the MHZ frequency (setting the bandwidth and the MHz frequency).
FEC – sets the parameter relevant to FEC (Forward Error Correction) among the possible choices (1/2, 2/3, 3/4,
5/6, 7/8).
GUARD INTERVAL – sets the guard interval among the possible choices (1/4, 1/8, 1/16, 1/32).
CARRIERS NUM. – sets the number of carriers between 2K and 8K.
CONSTELLATION – sets the constellation, QPSK, 16QAM or 64QAM, with which the carriers are modulated.
SPECTRUM – regulates the spectrum as NORMAL or REVERSED according to the reception instrument that
might work only in one of the two modes. Usually the "NORMAL SPECTRUM" setting is used.
LEVEL – regulates the output level on a scale between 0 and 15 to which a STEP equal to 1dB corresponds.
Setting the level to OFF, the output signal is disabled. The OFF output level can be set only during the normal
operation and not when the SINGLETONE function is activated.
SINGLETONE – allows the use of a single tone at the input to facilitate the measurement of the output level.
When the SINGLETONE function is activated, no other channels can be inserted.
5.1.5 COFDM (OUTPUT) MENU
Select the output
frequency
OUTPUT FREQ.
FEC
GUARD INTERVAL
CARRIERS NUM.
CONSTELLATION
SPECTRUM
LEVEL
SINGLETONE
Confirm the settings by pressing the
S key after the modules programmation.
SEL. BY
BANDWIDTH
FREQ.
FREQUENCY (MHz)
SEL. BY
COUNTRY
CHANNEL
OUTPUT
CHANNEL
1/2, 2/3, 3/4, 5/6, 7/8
1/2 7/8
1/4, 1/8, 1/16, 1/32
1/4 1/32
2K 8K
QPSK, 16QAM, 64QAM
QPSK 64QAM
NORMAL INVERTED
OFF, 0, 1, 2, .., 15
OFF 15
OFF ON
key; save the settings by pressing the
25
6 MHz 7
MHz 8
8
6
MHz
111 862
Europe
France
Europe
UK
Australia
S2-E69
S2 E69