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Reference Manual
IP2048/RM, Rev AA
Section 5: Service and Troubleshooting
February 2015
To change the dead band
1. After entering the “Eng” menu (see the note above), press the green button
repeatedly until “dEAd” is indicated.
2. Press the blue button
to enter the dead band menu. The display indicates the present
dead band value.
3. If this dead band is correct, press the red button
to exit to the menu.
(The menu option “dEAd” re-appears. To get to the next menu, press
).
4. Press the blue button
to start the editing mode. The first digit flashes to indicate it
can now be edited.
5. Press the green button
repeatedly to edit the flashing digit.
6. Press the blue button
to move to the next digit. The digit flashes to indicate it can
be edited.
7. Repeat steps (5) and (6) until the last digit is flashing, and edited as required.
8. Press the blue button
to confirm the new value. (The flashing stops).
9. If the new value is correct, press the red button
to save. The display changes to the
next menu option.
10. If the new value is incorrect, press the blue button
to exit to the menu.
11. The menu “dEAd” re-appears to re-start at step (2) or press
for the next menu.
5.4.5 Setting the frequency
Screen display: F
Factory default value: Auto
The frequency at which the transmitter operates is automatically chosen by the microprocessor
to ensure optimum signal size and performance.
“Auto” sets the frequency to obtain the best echo size and optimum performance. The actual
frequency being used by the transmitter can be viewed in diagnostics (see page 46).
The limits of operating frequency are a function of the intrinsic properties of the transmitter
itself, and may be set to operate at any frequency between
49 and 58 kHz.
The transmit frequency affects the quality of the echo being received, which may be used to
improve a poor echo or reduce the quality of a false echo.
Note
This menu option is in the engineering menu “Eng”. See “Accessing the engineering
menu” on page 49 or see Figure C-3 on page 79 for a map of the menu structure.