JRC JFC-7050 - Operation - System and Other Features; Menu: Setup and Units

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Operation
8.3.3.Alarm Range
If the alram is on, It is available to setup the Range(hight) of the Fish-school.(The bar, next of
display is shown)
( The default setting is 50m.)
8.3.4. Alarm Interval
If the alram is on, It is available to setup the alarm interval.
( The default setting is Middle)
8.3.5. Color Level
If the alram is on, It is available to setup the color level.
It is available to setup the color level.
9. Setup
9.1. System
It contains ID and the program version, and it has important information for maintenance and upgrade.
9.2. Unit
9.2.1. DIST/Speed
Select desired unit of measure for distance and speed. Choose from: nautical mile/knots (nm/kt),
kilometer/kilometers per hour(km/kmh), yard/knot(yd/kt).
cf) 1nm = 1.852km, 1kt /h= 1.852km/h, less than 1nm display in yard and over 1nm display in mile
(☞ The default setting is Nm/Kt.)
9.2.2. Depth
Select desired unit of measure for depth of water. Choose from: meter(M), foot(ft), fathom(fm),
Italian Fathom(Ifm), Japanese fathom(Jfm).
cf) 1m = 3.281ft = 0.549fm = 0.609lfm = 0.660jfm
(☞ The default setting is m.)
9.2.3. TEMP
Select desired unit of measure for temperature of water. Choose from: Celsius(℃), or Fahrenh
eit(℉).
cf) 1℃ = +32℉
(☞ The default setting is ℃.)