Digital Signal Measurement - ADInstruments S7200 Operation Manual

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6.4. Digital Signal Measurement

DVB-C QAM analysis functions include the following channel measurements,
- Constellation diagram,
- Channel power
- EVS (Error vector spectrum),
- Digital channel CNR
- Digital Hum.
Parameter Settings
Adjustable parameters and range of the DVB-C function of the S7200 are listed
below:
CH-Channel NO.:
——Value Range: all active channels or active digital channels in the active
channel plan
FREQ-Centre Frequency:
——Value Range: 5MHz-1200MHz
BW-Channel Bandwidth
——Value Range: 1MHz-50MHz
MODE-Modulation Mode
——Value Range:
- J.83A & J.83C, the available modulation modes are 16/32/64/128 and
256QAM；
- J.83B, the available modulation modes are 64QAM and 256QAM；
SR-Symbol Rate (MS/s) ——Value Range: 4MS/s to 7MS/s
Interface Icon description:
QAM signal losing lock,
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S7200 TV Signal Analyzer Operation Manual
QAM signal lock