Proceq Pundit Lab Operating Instructions Manual page 6

Zeroing the Pundit Lab
Note: When zeroing the exponential transducers the dedicated calibration rod
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(325 40 174) should be used.
© 2013 by Proceq SA
The Pundit Lab should be zeroed
using the calibration rod on a
regular basis and in particular if the
transducer frequency is changed or if
the cables are changed. The expected
calibration value (µs) is marked on the
calibration rod.
Couple the transducers to the
calibration rod by applying couplant
to the transducers and both ends of
the rod and pressing firmly together
as shown.
Select System Settings
(See chapter 3 for more info)
Check Tx/Rx matches transducer
frequency. Pulse width requires no
adjustment.
Correction factor set to 1.0.
Select Calibration.
If necessary, select to enter the transit
time as marked on the calibration rod.
Variable parameter; set as follows:
Up/down keys - fine adjustment
Left/right keys - coarse adjustment.
Center key - enters the value and
returns to the previous menu.
Cancel key - cancels the input and
returns to the previous menu.
Press "Start" to begin the calibration
sequence.
The final display shows the expected
transit time and below it the measured
transit time. This should match the
value on the calibration rod.
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