User's Manual

Set the Coax Frequencies

RF ON ( ABCD ) = If selected, it activates the related frequency out to the coax, and the related video channels as

assigned from the input 1 and 2 menu as per the previous chapter

– default = ALL SELECTED

STANDARD = change the modulation standard

– default for USA = J83B

CONSTELLATION = when in J83B, 64 QAM and 256 QAM are available

– default for USA = 256 QAM

NOTE : should you have issues on older coax cables so the signal cannot reach all the TVs correctly because

some signal distortion, you can try to compensate the loss of signal quality by changing to 64 QAM

This selection just reduces the number of the QAM carriers, not the video or audio quality

SYMBOL RATE = when in J83B, this field is auto-selected by the 64 QAM and 256 QAM modes

– default = auto-selected / read only

RF FREQUENCY A B C D = These are the 4 frequencies the modulator will output to the coax, in sequence from the

lowest ( A ) to the highest ( D ).

You can enter the first value A, then click apply, and the following B C D will autofill in steps of 6 Mhz eachother.

You can also set the first ( A ) then click apply, then the second ( B ) spanned and click apply, then the third ( C )

spanned and click apply, then the fourth ( D ) spanned and click apply

– default A = 195.000 ( frequency 10 )

– default B = 201.000 ( frequency 11 )

– default C = 207000 ( frequency 12 )

– default D = 213.000 ( frequency 13 )

Just enter 195.000 on A and click APPLY on the bottom

IMPORTANT : if you are operating multiple modulators on the same coax, make sure to use different sets of

frequencies per each modulator, choosing the adjacent fours from the frequency table at the end of this

manual.

You will also need to make different VCT ( see the VCT programming after on this manual ) so each

program will go to a proper destination memory and name on your TVs

RF OUT LEVEL = Set the RF SIGNAL Level out, in dBm ( not db millivolts ! ), from -10 ( high Level ) to -30 ( low )

-10 dBm is the maximum level and equals to +45 dB Millivolts

-10 dBm ( +45 db millivolts ) might be too high in case you drive a distribution amplifier, causing signal distortion which

prevents any TV to receive. If so, just decrease in steps of -3 at time until the signal is properly viewed on all TVs through

your amplifier. If the modulator is driving your coax network directly through a passive coax splitter, just leave this

parameter to the max level -10 dBm

– default = -10dBm

ASI OUT E Bitrate = ( Active only if the ASI OPTION is installed ) Set the payload CBR bitrate of the ASI Data out port for

when the ASI Output is selected to the BUS “ E “.

If the ASI Output selector is selected to A B C D, the ASI bitrate will be the same of the modulator A B C D bitrate

– default = 90.000 Megabits

ASI Output = ( Active only if the ASI OPTION is installed ) Select which of the multiplex data will be output by the ASI Out

ports. Selecting E, the encoders mapped to E will output to the ASI ( see the OUT ENABLE checkboxes on the input 1 /

2 encoder setup, previous on this manual )

Selecting A B C D, the same data of the related modulator will output

– default = OUTPUT E