Locks, Error Messages - GE USM 36 Series Technical Reference And Operating Manual

Evaluation according to the DGS method
The gain can be varied at any time. The difference in re-
lation to the calibration value during the DGS calibration
is directly displayed in the top left corner on top of the
gain value (without designation). If you set the function
DGS MODE to OFF and then to ON again, the original
gain setting is displayed with the difference value +0.0.
You can also adjust the DGS curve to the expected val-
ue of the ERS (equivalent reflector size) later on.
– Switch to the second operating level.
– Select the function group EVAL.
– Select the reading ERS for one of the items in the
measurement line (see Section Configuring the
measurement line, page 5-58).
USM 36

Locks, error messages

As long as a valid reference echo is stored, no functions
can be changed which could cause an incorrect DGS
evaluation, with the exception of PROBE DELAY (with-
in tight limits). If an attempt is made to change such a
function, the following error message appears:
Function locked: DGS reference has been recorded!
The DGS evaluation must likewise be turned off and the
reference echo deleted when selecting a new probe,
e.g. for a new test application.
Issue 2 (12/2013)
5 Operation
5-129