User Manual for the Type 8370
WSM 6+ Transponder
UM-8370
Issue A Rev 1
Section 11 – Technical Specifications 34
11.3 Specifications for Type 8370-1111 & 8370-4112 WSM 6+
Parameter Specification
Navigation Schemes
All HPR-400 Channels (see Appendix A.1)
All Sonardyne Tone Frequencies
All Sonardyne Wideband signals (replies only)
Pulse Width
10 ms for HPR
(8 ms for Sonardyne Wideband replies)
Turnaround Delay after interrogation pulse or responder trigger
HPR 400 60 ms (fixed for transponder) 30 ms (fixed for responder)
Sonardyne Wideband 80–640 ms (configurable)
Maximum Repetition Period 750 ms
Responder Trigger, Voltage Rising edge triggers transmission (from < +0.5 V to > +4 V)
Responder Trigger, Voltage Maximum input 24 V
Responder Trigger, pulse width 5 to 45 ms
Transducer Type 8370-1x11 8370-4x12
Depth Rating 1000 m 4000 m
Operational Frequency MF (19–34 kHz) MF (19–34 kHz)
Transceiver Beamshape Omni Directional Directional
Tx Source Level 19–34 kHz Ext Power
(dB re 1 µPa @ 1 m) Battery
187 dB
184 dB
196 dB
193 dB
Tone Equivalent Energy (TEE*)
External Power
193 dB 202 dB
Receive Sensitivity: (dB re 1 µPa) <80 dB <85 dB
Depth Sensor, Linearity ±0.15% Full Scale ±0.15% Full Scale
Depth Sensor, Total Error Band ±0.5% Full Scale ±0.5% Full Scale
Tx Beam Pattern – Low channels ±120 Degrees Conical ±30 Degrees Conical
Tx Beam Pattern – High channels ±120 Degrees Conical ±20 Degrees Conical
Internal Power
Battery Type Nickel Metal Hydride rechargeable (2000 mAh)
Quiescent Life >35 days >35 days
Operating life
(8 ms @ 1/sec, NPL196 – WB2) 3 days
(8 ms @ 1/sec, NPL184 – WB2) 17 days
(8 ms @ 1/sec, NPL187 – WB2) 6 days
(8 ms @ 1/sec, NPL175 – WB2) 19 days
Charging time
3 hours using Sonardyne charger Type 8370-011-01
(temperature must be between 10 and 40ºC)
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