4-10
4.1.11 BTM Adjustment: -3/-2/-1/0/+1/+2/+3/+4/+5/+6
Function The measurement depth of layer pursued according to ups and downs in bottom of the sea
automatically can be adjusted. Use the +2 position usually.
Operation Standard Menu: [MENU] key/Menu screen/Measure setting≫/[ENT] key/BTM Adjustment:
-3/-2/-1/0/ +1/+2/+3/+4/+5/+6
About the BTM Adjustment
Set the “-“ value when you want to tracking the upper part from sea bottom. Set the "+"
value when you want to tracking the near bottom. Set it to the value immediately before
that because the current abnormally displays it when you set the large "+" value.
* BTM Adjustment1 is a menu for servicemen.
* BTM Adjustment2 is a menu for servicemen.
4.1.12 Transmitting Power: Standard/High/Auto
Function The transmission output is selected. Use the Standard position usually.
Operation Standard Menu: [MENU] key/Menu screen/Measure setting ≫ /[ENT] key/Tx power:
Standard/High/Auto
About the Tx Power
Standard: It is a transmission of the standard output.
High: The transmission output is twice the standard. It is effective when giving priority to
the maximum depth. However, the response and the stability of the current worsen
compared with the "Standard" because the transmission repetition decreases to the
half.
Auto:
An output is automatically adjusted with various states.
4.1.13 Transmitting Pulse Width: S-short/Shot/Normal/Long
Function The length of the transmitted pulse of the supersonic wave is selected. Use the Normal
position usually.
Operation Standard Menu: [MENU] key/Menu screen/ Measure setting≫/[ENT] key/Tx pulse width:
S-short/Shot/Normal/Long
About the Tx pulse width
S-short: The pulse width is standard 1/4. Use this setting when depth is less than 50m.
Short: The pulse width is standard 1/2. Use this setting when depth is less than 100m.
Normal: The pulse width is standard.
Long: The pulse width is 1.5 times the standard. The response and the stability of the
current worsen more than the standard.
It may be effective to the case where a current is measured in the ocean area
where echo intensity is low, and the purpose of reducing interference of other
audio equipment.
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