Db-Difference Measurement (Function Group Db Ref) - GE USM 36 Series Technical Reference And Operating Manual

dB-difference measurement (function group dB REF)

5.10 dB-difference measurement
(function group dB REF)
You can evaluate reflector echoes by means of refer-
ence echoes. The function group dB REF provides you
with all the functions needed for the echo height com-
parison between a reflector echo and a reference echo.
– Switch to the first operating level.
– Select the function group dB REF.
USM 36
N o t e
Depending on the evaluation mode selected,
one of the function groups DAC/TCG, DGS,
AWS D1.1, JISDAC or CNDAC can also be
displayed at this point (see Section EVAL
MODE, page 5-73).
You will find the following functions:
MODE
REFERENCE
RECORD
DELETE REF
The functions are described in the order in which you
need them during your work.
Issue 2 (12/2013)
5 Operation
Activating dB-difference
measurement
Display of reference gain
Storing the reference echo
Deleting a reference echo
5-37