Format Tab (DOCSIS 4.0 Upstream)

Menu Path: MeasSetup > DOCSIS 4.0 Uptream Demod Properties > Format tab

The Format tab of the DOCSIS 4.0 Upstream Demod Properties dialog box lets you configure the demodulator for DOCSIS 4.0 Upstream signals. These are the parameters necessary for the VSA to lock on to and demodulate the test signal.

The Format tab dialog box has the following settings:

Preset Measurement

Copy Auto to Manual

DOCSIS Carrier Center Frequency Offset

• Center Offset
• Calculate Offset using S0
  • S0 Frequency
  • Carrier Center
  • VSA Center
  • Offset
  • Copy to Center Offset

BER Analysis

• BER Analysis
• Randomize Seed (Hex)
• Pause Measurement After Bit Count

Initial Settings

• Auto Detect
• FFT Length
• Cyclic Prefix
• Rolloff Period

Excluded/Unused/Guard Band Config

• Auto Detect
• Sub. Det. Threshold
• Subcar Start
• Subcar Length
• Edit
• Add
• Delete
• Apply

Burst Minislot Configuration

• Auto Detect Minislot Start and Length
• Edit
• Minislot Start
• Minislot Length
• Pilot Pattern
• Bit Loading
• Add
• Delete
• Apply

See Also

DOCSIS 4.0 Upstream Demod Properties Dialog Box