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IP2046/IM
Nov 2006
4.7 Engineering Set-up menu : See also Appendix A4 “Eng”
The proficient user is able to fine tune operation of the MSP400 if site or application conditions
are unusual.
Users are recommended to leave all operational fine tuning parameters at the factory default
settings unless they have a good understanding of the function and capability of the parameters.
The “reload factory defaults” function may be found within this menu, and should be used if the
transmitter has been configured incorrectly or if the user wishes to reset all parameter values
back to factory default values.
To display the Engineering set-up menu “Eng”, navigate from the normal PV display using the blue
button → and the red button ↵. Note the requirement to hold the button or hold two buttons
together as shown on the main menu in Appendix A.
To enter the “Eng” menu, press the green button ↓ to display the first menu item “t.HoLd”
4.7.1 Setting the Threshold Screen display “t.HoLd”
Factory default value Auto
The threshold value is actually a limit below which false echoes are rejected.
Auto shows that the MSP400 will automatically set the threshold level for optimum performance based
on echo sizes being received.
A new value may be entered up to a maximum value of 99. A large value will have the effect of
eliminating false echo processing.
Note that the value shown is in the same units as echo size; if the wrong echo is being processed then
raising the threshold level above that of the false echo size (see 4.5.3) will allow the MSP400 to ignore
any echoes below this size, including the false echo itself.
To edit the threshold value:
a) Press the blue button → to enter the threshold menu and to display the current value in use. If this
is correct, press the red button ↵ return to the main menu.
If the threshold is to be edited, press the blue button → again to allow editing
The leading digit of the 3 digit threshold value will now be flashing, indicating it may be changed.
b) Use the green button D to edit the value of the leading digit.
c) Once correct, use the blue button → to select the next digit and then the green button ↓ to edit as
before, or the blue button → to move to the next digit. Continue this sequence until all 3 digits are
correct.
d) Press the blue button → a final time to confirm the new value. None of the digits should now be
flashing.
If the new threshold is incorrect, the edit sequence can be re-started by pressing the blue button → again.
If the threshold is correct, press the red button ↵ to save the new value to memory and automatically
scroll on to the next main menu option: “LE”