WSM6 Manual
Document Ref: UM-8270-000
Issue: A Rev 0
Section 5
October 2011
27
5.2
Responder Mode
In this mode, the transponder is triggered to transmit on the configured reply signal by an electrical
trigger signal applied to the external connector. Following the reply, the transponder will be inhibited
from responding to acoustic interrogations for the blocking period, after which it will respond to
either acoustic or electrical triggers.
The trigger pulse waveform is a positive going pulse with a pulse width between 3 and 25 ms and
voltage levels between 4 V minimum and 24 V.
Figure 5-3 – HPR Responder Sequence
1 3ms minimum width
5 End of Blocking Period (nominal)
2 +4V minimum trigger
6 End of Turnaround Delay
3 Output Burst
7 Start of Cycle
4 Nominal Repetition Interval
5.3
Preparing the WSM6 for Service
5.3.1
Check the Pressure Relief Vent Valve
Check the Pressure Relief Vent Valve is flush with the end-cap. If not, it could indicate a pressure
build-up during previous operations due to a fault developing in the battery pack. The unit should be
investigated by qualified service personnel and should not be deployed.
