CVG-200
Chapter 6
Using the Menu
0093132802-05
6-21
6.2.6.3
Bottom Start
Sets up the starting depth of the seabed detection.
Setting Range: 0.0 to 20.0(m, fm, J.fm, I.fm)
0.0 to 65.0(ft)
Depth units are set by the procedure outlined in section 6.2.6.1.
Once set, a seabed echo (received signal) shallower than the set up depth will not be detected. Due
to this, confusing the transmission line for the seabed will not happen. Should the Bottom Detection
Start setting be deeper than the actual sea bottom depth, the sea bottom shall not be properly
detected.
6.2.6.4
Bottom Detection
Sets the range for sea bottom detection.
Selection
：
Inside range (Inner side of the screen), Outside range(Outside of the screen)
Inside range: Detects sea bottoms within the set range displayed.
Outside range: Detects sea bottoms at twice the range of the set range displayed.
6.2.6.5
Depth Measurement
Sets sea bottom measurement at Auto, High, or Low frequency settings.
Selection
：
Auto, High frequency, Low frequency
Auto: Usually detects sea bottoms at high frequency. Automatically switches to low
frequency with sea bottom is not detected at high frequencies.
High frequency: Detects sea bottoms at high frequency.
Low frequency: Detects sea bottoms at low frequency.
6.2.6.6
Sonic Correction
Compensates the deviation of sonic velocity.
Setting Range: -7 to +2%
A depth indication may deviate from a true value because of the water temperature difference or salt
concentration in the water. Corrects the depth indicator value to a known true value.
6.2.6.7
Water Temperature Correction
Compensates the deviation of a temperature value supplied from the speed/temperature sensor.
Setting Range: -10.0 to +10.0
(°C or °F)
Sets water temperature data values when connected to: Water temperature sensor (T-81) or water
temperature/speed sensor (one of these: ST-80-, ST-90-1, ST-100-1).
