4-11 
 
4.1.14 Tide Process: J1/J1+/J2/J2+/J3/J3+/J4/J4+/J5/J5+ 
 
  Function      It is a menu for servicemen. 
Used the J3 position usually.  
  Operation    Standard Menu: [MENU] key/Menu screen/Measure setting≫/[ENT] key/ Tide 
Process:   J1/J1+/J2/J2+/J3/J3+/J4/J4+/J5/J5+ 
  About current operation   
It is a setting item which functions on the operation of a current value. 
The variation in a current value becomes small so that a numerical value is large, but 
the influence of the following comes out. 
- The probability that the function to eliminate an unexpected value stops working 
correctly becomes high. 
- Since the tracking to change of a current becomes quick, it may not be stabilized 
depending on a situation. 
 
4.1.15 Shallow Water Mode: Standard/Shallow water /Auto 1/Auto 2 
  Function   A standard/shallow sea is selected according to the depth region 
which measures a current. 
Use as standard usually. 
The Auto 2 is a setting for servicemen. 
  Operation    Standard Menu: [MENU] key/Menu screen/Measure setting≫/[ENT] key/Shallow 
water mode:  Standard/Shallow water /Auto 1/Auto 2 
  About shallow water mode   
It is a setting item which functions on the measurement limit in a shallow sea 
region. 
If shallow water mode is selected, measurement of a current will be attained at the 
place of bottom depth shallower than usual, but the influence of the following 
comes out. 
- A possibility that a current value will become unstable at a place about deeper 
than 50 m in the bottom of the sea depth becomes high. 
- A possibility that a bottom tracking ship speed will become unstable at a place 
about deeper than 50 m in the bottom of the sea depth becomes high. 
- At the bottom of the sea depth about deeper than 50 m, a possibility of losing the 
bottom of the sea becomes high. 
- Compared with the case of a standard, the accuracy of a current value may 
become low. 
- Compared with the case of a standard, the tracking performance of a current 
value may become slow. 
The Auto 1 changes standard and shallow sea mode automatically according to 
bottom of the sea depth. 
The Auto 2 is an item for servicemen. Please do not use it.