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Krautkramer USN 52R/USN 52L Issue 05, 02/00 5-7
DAMPING Electrical damping of the probe
You can use the function DAMPING to connect various
resistors in parallel to the probe in order to achieve an
optimum matching of the probe’s electrical impedance
to the instrument.
– Select a low value with broadband probes, or if you
wish to improve the near resolution.
– Select a high value if you are using narrow-band
probes, or if you need a high sound intensity.
Operation:
Set the required value in DAMPING using M.
RECTIF. Setting the rectification mode
In the RECTIF. function you select the rectification
mode of the echo pulses according to the application.
You have the following possibilities:
• FULL (full-wave): All half-waves above the base line
are displayed
•RF (radio-frequency display): All signals are
displayed in their original form.
H Note:
The RF display mode is only adjustable if the function
INTENSITY (display brightness) is set to LOW and the
range does not exceed 196 mm (with 5920 mm).
• NEG HALF (negative half-wave): Only negative half-
waves are displayed.
• POS HALF (positive half-wave): Only positive half-
waves are displayed.
Operation:
– Select the required setting in RECTIF. with M.
Adjustment of the USN 52R/USN 52L Operation
Krautkramer USN 52R/USN 52L Issue 05, 02/00 5-7
DAMPING Electrical damping of the probe
You can use the function DAMPING to connect various
resistors in parallel to the probe in order to achieve an
optimum matching of the probe’s electrical impedance
to the instrument.
– Select a low value with broadband probes, or if you
wish to improve the near resolution.
– Select a high value if you are using narrow-band
probes, or if you need a high sound intensity.
Operation:
Set the required value in DAMPING using M.
RECTIF. Setting the rectification mode
In the RECTIF. function you select the rectification
mode of the echo pulses according to the application.
You have the following possibilities:
• FULL (full-wave): All half-waves above the base line
are displayed
•RF (radio-frequency display): All signals are
displayed in their original form.
H Note:
The RF display mode is only adjustable if the function
INTENSITY (display brightness) is set to LOW and the
range does not exceed 196 mm (with 5920 mm).
• NEG HALF (negative half-wave): Only negative half-
waves are displayed.
• POS HALF (positive half-wave): Only positive half-
waves are displayed.
Operation:
– Select the required setting in RECTIF. with M.
Adjustment of the USN 52R/USN 52L Operation