SPM leonova emerald, User Manual

Page: 118 / 170

D
D:32
Shock pulse measurement
Measuring LR/HR and LR/HR HD
From the measurement window, the instrument can be
set up to perform a transducer quality line test (TLQ)
before measurement. Press the ENTER key to enable or
disable the TLQ test (1). TLQ (Transducer Line Quality) is
described on page D:17.
When the MEASURE/SAVE (M/S) key is pressed, Leonova
samples the transducer signal for two seconds if ACCUM
is set to 1. When ACCUM is higher, it will continue to
measure for the stated number of times and return an
average of all measurements taken. The resulting LR and
HR value is displayed in the ‘Measuring’ window, together
with the status dot.
For a normalized measurement, LUB, COND and CODE
are shown to the right (2).
When ‘Variable speed’ is active, the rpm must be measured
before measuring the shock values.
Please note that LR and HR values are always raw values,
measured in dBsv, the unit for unnormalized shock values.
For normalized measurements, LUB is displayed with
CODE A and B, COND is displayed with CODE B, C and D.
The ‘Measuring result’ window (3) shows the results. In
the ‘Graphics’ window (4), press ‘Change graph’ and
select the desired alternative. The ‘Lubmaster’ graph
(5) is displayed only when LR/HR HD is used. The LUB
and COND graphs will not be shown for unnormalized
readings.
2
3 4
1
6
5
When using the LR/HR HD technique, the
produced ‘SPM Spectrum HD’ and ‘Time signal
HD’ are shown by pressing the function keys (6).
Save the result by pressing the MEASURE/SAVE
(M/S) key, or measure again with SHIFT + M/S.