Waygate Technologies Krautkramer USM 100, Руководство по эксплуатации, Страница: 171 / 330

dB REF 5 Operation
Krautkrämer USM 100 Rev. 9 (09/2023) 171
5.20 dB REF
With the dB-difference measurement method (db REF)
you can evaluate reflector echoes by means of refer-
ence echoes.
After selecting dB REF in the function Eval Mode in
(see page 159) the function group Evaluation provides
you with all the functions needed for the echo height
comparison between a reflector echo and a reference
echo.
Recording a reference echo
Before using the dB-difference measurement, you have
to first record a reference echo.
If a reference echo has already been stored, you have
to first delete it before recording a new reference echo
(see section below).
– Peak the reference echo according to the test instruc-
tion.
– Position the gate A on the reference echo.
– Tap the Calibrate icon in the Command bar (see
page 74). The reference echo is recorded and stored.
Deleting a reference echo
You can delete a stored reference echo at any time.
– Tap the Clear icon in the Command bar (see
page 75). A confirmation message is shown.
– Confirm the deletion.