B-2 APPENDIX B TPU Software Interface and Control
Series 3900 Sonar System Operations and Maintenance Manual 11214510, Rev. 02
RESPDIV {d = 0 - 15}. Sets the responder divisor to 2^d, where d = 0 – 15. A
value of 15 turns the responder off. Default is 15 (off).
RESPFREQ {d = 0 - 15}. Sets the responder frequency to 24 kHz + d * 500
Hz, where d = 0 – 15. Default is 7 (27.5 kHz).
DESPECKLESWITCH {d = 0,1,2,3}. Set despeckle mode, where d = 0 is
off, d = 1 is low, d = 2 is medium and d = 3 is high. Default is off.
SPEEDFILTERSWITCH {d = 0,1}. Turn velocity filter on|off, where d = 0 is
off and d = 1 is on. Default is on.
TVGPAGE {d = 0 - 15}. Set TVG page, where d = 0 – 15. Default is 7.
Decreasing d decreases the gain by 3dB whereas increasing d increases gain by
3dB. A setting of 15 selects a "flat" TVG curve where the gain is constant.
HEARTBEAT {d = 0 - 256}. Sets the heartbeat message divisor. Heartbeat
messages are output once every ‘d’ pings where d is a value from 0 to 256.
Note that a value of 0 shuts off messages. Default is 0 (off).
SPEEDSOUND {d = 140000 – 150000}. Sets the speed of sound in cm/s.
Default is 150000 cm/s. Accepted range is from 140000 to 160000
RESMODE {d = 0,1} (5000 System only). Set resolution mode where d = 0
is normal and d = 1 is high resolution. Note ranges of 100 m and 150 m are not
available in high-resolution mode. Default is normal.
BAUDRATE {d = 300, 600, 1200, 2400, 4800, 9600, 19200, 38400}. Set
the baud rate for the NMEA port (COM2). Default is 4800 (NMEA standard).
ALTIMETER {d = 0,1} (5000 System only). Turn altimeter transmitter on
or off. Setting d = 1 turns altimeter on, d = 0 turns altimeter off. Default is on.
BATHY {d = 0,1,2} (5000 System only). If the towfish is a 5400
Bathymetry model then d must be set to 1. This instructs the software to
process the data as four beams plus bathymetry data. If the towfish is a model
5500 with bathy then this must be set to 2. This instructs the TPU to process
five beams plus bathymetry data.
OLDHEADERTYPE {d = 0,1}. Setting d = 1 selects the older header format
for the data. This allows compatibility with older versions of software. If you
are using an older version of ss.exe along with K-View or an older version of
ISIS set this to one, otherwise set to zero or don’t include. Default is zero.
RAWTERMINAL {d = 0,1}. Setting d = 1 tells the TPU to treat COM1 as a
raw terminal. This is useful if COM1 is to be used for controlling the towfish in
certain integrated applications.
PINGSPERFILE {d = 500 – 50000}. When using local hard-disk storage
this tells the TPU how many pings to record before starting a new file.
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