Waveform Page
Figure 87: Advanced waveform selection
For most applications, select the
Tutomatic
waveform . In some circumstances, you may select an alternate waveform at the
direction of Badger Meter Technical Support .
Tutomatic Pull-Down List Options
This controls the transmitted waveform . This is very useful for various flow conditions .
• Automatic
• Sin - Straight sine wave . Frequency can be adjusted .
• Sin Carrot Top - Sine wave with Triangular envelope (50%) . Frequency can be adjusted .
• Chirp - Frequency swept sin wave . Frequency & bandwidth can be adjusted .
• Best Barker - 3, 5, 7, 11 or 13 chips . Chips & Wavelengths per chip are determined with transducer and setup . Frequency
can be adjusted . Chip count is adjusted automatically to Duration .
Best Barker is best for high speed flows .
Sin Carrot Top is best for low speed flows .
Waveform Duration (%)
Overrides of automatic transmit duration control . This can be useful for high speed flows .
Transmitted waveform duration is automatically calculated based on pipe setup transducers, etc .
• 1% means 1% of the automatic value .
• 100% means 1x times of the automatic value .
For a high speed flow, users can try 75%, 50%, and even 25% durations depending on transducer types and setups .
Nominal Frequency (%) and Secondary or Width (%)
These two adjustments are really only useful if Waveform is not automatic .
• Frequency is adjustable from 50% to 200% nominal .
• Secondary or Width is from 50% to 200% nominal . This is seldom used (only for Chirp) .
Adv (Advanced) Group
Page 67
November 2016
HYB-UM-00090-EN-04