WSM6 Manual
Document Ref: UM-8270-000
Issue: A Rev 0
Section 5
October 2011
31
The WSM can be set by acoustic command into one of three separate reply modes.
Interrogation
replies
ENABLED
- command “
PEN
” - each valid interrogation results in a
single pulse reply as configured by the
WSM Terminal
PC software.
Interrogation Depth replies
ENABLED
- Command “
PDE
” - each valid interrogation
results in a two pulse reply as configured by the
WSM Terminal
PC software. The
second pulse carries the encoded depth information.
Interrogation
replies
DISABLED
- Command “
PDS
” - unit will not reply to any
interrogations.
WSM command
Equivalent Compatt or ANT
command
Command function
PEN EN
Enable
PDE TC
Depth
Enable
PDS DS
Disable
5.3.12
Interrogators
Various transceiver units are capable of interrogating WSM6s, including all HPR 300, 400 and
HiPAP
systems. Only Sonardyne MF transceiver systems can be used to send acoustic
commands to WSMs. Only Sonardyne Digital USBL or RovNav 5 transceivers can be used with
wideband reply signals from the WSM.
A Sonardyne Type 7343 Acoustic Navigation Test unit (ANT) can be used to interrogate WSM6s
and also send commands, but is only designed for pre-deployment testing and fault diagnosis. To
command a WSM6, the ANT firmware must be V2.25 or later. To interrogate a unit the command
HIInn is used where nn is the HPR300 or HPR400 channel number.
The 7574 MF Directional LCU and 7663 MF Omni-directional LCU may be used to command the
unit and as a range-only interrogator provided the unit channel is set to a HPR300 channel.
Interrogate command HIInn where nn is 1 – 9 for HPR 1 – 9 and 10 for Square(11), 11 for
Circle(22), 12 for Delta(33), 13 for X(44) and 14 for Y(55).
5.3.13
Wideband Interrogators
A Type 8010 MF RovNav 5 may be used to command and interrogate the unit, including wideband
ranging. The RovNav 5 must be fitted with firmware V8.0 or greater to use Wideband ranging.
A Type 8021 or 8023 Digital USBL/LUSBL system has HPR 300 and HPR 400 navigation
processing capability and therefore provides range and direction to the unit as well as being able to
command the unit. The Digital USBL/LUSBL must be fitted with firmware V8.0 or greater to use
wideband ranging.
Each Individual wideband reply (IRS) generated when the high order address codes are used (for
improved command security) maps to the same IRS when the low order address codes are used.
The high order codes are incremented on the lower order codes by 32, e.g code 1 maps to code 33
thus address 101 uses the same IRS address 3301, hence over-layed IRS’s must be avoided.
HiPAP is a registered trademark of Kongsberg Simrad AS.