Raymarine E90W, User Reference Handbook

Page: 185 / 250

Fishfinder Transducer Calibration
Your fishfinder transducer must be calibrated correctly to achieve
accurate depth readings.
The multifunction display receives the image from a DSM which
processes sonar signals from a transducer mounted in the water.
If the transducer is equipped with a speed paddle wheel and
temperature-sensing thermistor, the DSM calculates speed and
temperature. To ensure accurate readings, it may be necessary to
calibrate the transducer(s) by applying offsets to depth, speed and
temperature. As these settings are held in the DSM and relate to
the transducer, they are applied system-wide.
Fishfinder transducer settings
Menu Item Description Options
Select Transducer Select the appropriate transducer type from those displayed. • B256/M256
• B260/M260/SS560
• R99/R199
• B258
• SS270/B264
• B164
• R209/R299
Select Speed Transducer Select the appropriate speed transducer from those available.
This option is only available if you are not using a combined
Depth/Speed or Depth/Speed/Temperature transducer. • NONE
• UNKNOWN
• B120/P120 ST600
• ST69
• B120/P120 ST800
• CS4500
Using the fishfinder
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