Drake EEG-QIP Enterprise Edge Guide with QAM and IP Input / CHIC Software - Manual (Page 14)

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QAM Screen
The “Main > QAM” is a “read and write” screen to assign QAM parameters to the TS:
Output Channel/Frequency: must assign an RF channel number to the RF QAM output of the QAM module (i.e.
RF channel 2, as shown in Figure 5.7). The range is CATV channels 2 to 158.
Output Control: allows the user to turn the RF channel On/Off.
CW Control: allows the user to switch the QAM output mode to CW (Continuous Waveform) which activates an
analog carrier at the selected channel’s center frequency; this is typically used in level adjustment of the system.
NOTE: Must be disabled for normal operation.
Final Output Level: must select the QAM RF output level for the output. The range is 32 to 42 dBmV.
Output QAM Mode: must select the desired QAM modulation mode. Possible options are: 64B, 256B, 16A, 32A,
64A, 128A, and 256A. For most applications in the USA, the recommended QAM modulation mode is 256B.
Output QAM Map: must select the desired QAM Map. Possible options are STD, IRC, and HRC.
Output QAM Data Rate: indicates the maximum data rate depending on the selected QAM mode, for example
5.3605 Mbaud for QAM 256B.
Output QAM Interleaver: indicates the interleaver value for the QAM mode.
Output QAM Alpha: indicates the Alpha value for the QAM mode
QAM Lock State: indicates whether QAM module is working properly (locked) or not.
NOTE: The module may take a few seconds to lock when QAM output parameters are changed.
NOTE: Be sure to Save entries.
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