Raymarine e7D, Installation And Operation Handbook, Page: 170 / 270

14.15 Transducer set-up menu options
The Transducer Set-up menu should be used when setting up your multifunction display for the first time or when installing a depth
transducer.
Menu Item Description Options
Select Transducer Select the appropriate transducer type from those displayed.
Some transducer may be detected by the system automatically. • P58/P65/P66
• P79
• P319/B117SS555
• B66V/B66VL
• B744V/B744Vl/SS544V
• B45
• B60/SS60
• P48
• 83\200 Khz (Minn Kota)
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
• Default
• B120/P120 ST600
• ST69
• B120/P120 ST800
• CS4500
Depth Offset (waterline) Offset represents the depth of the transducer (relative to the
waterline). • –9.9 to +9.9 feet — or equivalent units
Speed Offset Offset applied to the speed log. • 0 to 100%
Temperature Offset Offset applied to the temperature transducer value. • –9.9 to +9.9 °F — or equivalent units
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.
Depth Offset
Depths are measured from the transducer to the sea bed, but you
can apply an offset value to the depth data, so that the displayed
depth reading represents the depth to the sea bed from either the
keel or the waterline.
Before attempting to set a waterline or keel offset, find out the
vertical separation between the transducer and either the waterline
or the bottom of the keel on your vessel, as appropriate. Then set
the appropriate depth offset value.
D9343--2
1 2 3
1 Waterline offset
2
Transducer / Zero offset
3 Keel offset
If an offset is not applied, displayed depth readings represent the
distance from the transducer to the sea bed.
Setting the depth offset
From the fishfinder application:
1. Select Menu .
2. Select Set-up .
3. Select Transducer Set-up .
4. Select Depth Offset .
5. Use the Rotary Control to adjust the offset to the required value.
170 e7 / e7D / e95 / e97 / e125 / e127 / c95 / c97 / c125 / c127