Specifications

Channel Master Operation Manual
P/N 95B-6001-00 (January 2005) page 77
Description WF positions the start of the first cell at some vertical distance
from the transducer head. This allows the Channel Master
transmit circuits time to recover before beginning the receive
cycle. In effect, WF blanks out bad data close to the trans-
ducer head, thus creating a depth window that reduces un-
wanted data in the ensemble.
Notes 1. The distance to the middle of cell #1 is a function of blank
after transmit (WF), cell size (WS), and speed of sound. The
fixed leader data contains this distance.
2. Small WF values may show ringing/recovery problems in
the first cells that cannot be screened by the Channel Master.
WN – Number of Cells
Purpose Sets the number of cells over which the Channel Master col-
lects data.
Format WNnnn
Range nnn = 001 to 128 cells
Default WN025 (1200kHz)
Recommended Setting. Set using WinHADCP.
Description The range of the Channel Master is set by the number of cells
(WN) times the size of each cell (WS).
WP – Pings Per Ensemble
Purpose Sets the number of pings to average in each data ensemble.
Format WPnnnnn
Range nnnnn = 0 to 999 pings
Default WP00001
Recommended Setting. Set using WinHADCP.
Description WP sets the number of pings to average in each ensemble be-
fore sending/recording the data.
Notes 1. If WP = zero the Channel Master does not collect water-
profile data.
2. The Channel Master automatically extends the ensemble
interval (TE) if WP x TP > TE.