Standard Water Profiling Commands; Wb - Bandwidth; Wc - Correlation Threshold; Table 31: Bandwidth Control - Teledyne RD Instruments SENTINEL V SELF-CONTAINED Operation Manual

September 2017

Standard Water Profiling Commands

WB – Bandwidth
Purpose Sets the profiling mode 1 bandwidth (sampling rate). Smaller bandwidths allow the ADCP
to profile farther, but the standard deviation is increased by as much as 2.5 times.
Format WBn
n = 0 (High), 1 (Low)
Range
Default WB0
Recommended Setting. The default setting for this command is recommended for most applications.
Description See table below.
Table 31: Bandwidth Control
Bandwidth
0 = High (25%)
1 = Low (6.25%)
WC – Correlation Threshold
Purpose Sets the minimum threshold for correlation magnitude that velocity data must meet to be
considered valid.
Format WCnnn
Range nnn = 0 to 255 counts
Default WC 064
Recommended Setting. The default setting for this command is recommended for most applications.
Description The Sentinel V Real-Time uses WC to screen water-track data for the minimum acceptable
correlation requirements. The nominal (maximum) correlation depends on system fre-
quency and depth cell size (WS). WC sets the threshold of the correlation below, which the
ADCP flags the data as bad and does not average the data into the ensemble.
The default threshold is 64 counts. A solid target would have a correlation of 128 counts.
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EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Sample rate Data variance
High Low
Low High
Sentinel V SC and RT Operation Manual
Profiling range
Low
High