Furuno 1724C - Manual (Page 199)

7. CUSTOMIZING YOUR UNIT
7-36
7.9.2 Sensor setup
The SENSOR SETUP menu lets you further refine speed, water temperature and depth
data fed from the network sounder.
1. Show the sounder display, then press the MENU key.
2. Press the SOUNDER SYSTEM SETUP and SENSOR SETUP soft keys to show the
SENSOR SETUP menu. The current ship’s speed, water temperature, depth and speed
of sound are shown at the bottom of the menu.
SENSOR
SETUP
RETURN
EDIT
SPEED CALIBRATION
+ 00%
TEMP CALIBRATION
+ 0
°
F
DEPTH CALIBRATION
+0.0ft
ACSTC SPD CALIBRATION
+ 000m/s
SPEED
DEPTH
TEMP
ACSTC SPD
12.3kt
125.0ft
78.8 ° F
1500m/s
Sensor setup menu
3. Select item to adjust, then press the EDIT soft key.
4. Adjust the Cursor pad upward or downward to set appropriate value.
Speed and temperature calibrations: Enter plus or minus value. For example, if the
water temperature readout is 77 ° F but the actual water temperature is 75 ° F, enter
–2( ° F).
Depth calibration: If you desire the depth readout to show the distance between ship’s
draft and bottom (rather than transducer and bottom), set ship’s draft here. Enter a plus
or minus value.
Acoustic speed calibration:
Sets the speed of sound used by the network sounder.
Normally no adjustment is required, however if echoes are returning too slow or too fast
adjust the value as appropriate. This is only used if water salinity is at an extreme level.
Under normal circumstances, do not adjust.
Sensor setup menu settings
Item Settings Default Setting
Speed Calibration -50 -+50% 0 (no offset)
Temperature Calibration -40°F – +40°F 0 (no offset)
Depth Calibration -15 - +90 ft 0 (no offset)
Acoustic Speed Calibration -500 - +500 m/s 0 (no offset)
5. Press the RETURN soft key followed by the MENU key.