Application Note

TECHNICOLOR
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each of the qam channels will represent. Because each of the 3 ICs represents 4 RF channels those
channels must maintain adjacent channel frequency spacing. This means you can NOT cross band
boundaries within a single IC that violate the 6 MHz channel spacing. The QAM6 follows the North
American Cable Frequency band plan (See figure 5 below). The baseChannel represents the first channel
of the group of 4 channels within that IC. If the baseChannel of IC A was set to 30 that up convertor will
output RF channels 30, 31, 32 and 33.
The carrierOn line is broken down into 3 groups of 4 boxes. Each group represents an up convertor IC (A,
B and C). Each box represents a single qam channel. By changing the content of the box we control the
RF output of that qam channel (1 = ON, 0 = OFF). To change the state off an RF carrier enter 1 or 0 into
the appropriate box and click on the Submit Query button. The QAM6 may have 6, 8, 10 or 12 channels
enabled. If the QAM6 has less than 12 channels enabled they may be any of the 12 possible channels.
This allows you to use all three up convertor ICs to create a channel ring that may be in up to 3 different
bands. The software will only allow you to turn on the number of channels the QAM6 is licensed for.
The alternateIp is a second IP address that can be used to send transport streams to the QAM6. This IP
address can be a multicast or a unicast address. Transport streams sent to the QAM6 via this address are
assigned to a qam channel–sub channel using the same port number system as the primary IP address.
You can only send one single program transport stream to any port.
The tftpIp is the IP address of the NIC that is connecting the tftp server to the COM1000 system. The tftp
server is used to transfer files to the COM1000 system components. This includes software updates,
license files, software keys, etc.
The tftpFilename is where you put the name of the file you are going to transfer to the QAM6. This will
be a software update, license file, etc.
The reset field is used to software reset the QAM6. Set this field to 1 and click the Submit Query button
to reset the QAM6.