SPM leonova emerald, Руководство пользователя

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Shock pulse measurement
D:21
D
Variable speed
The alternative ‘Variable speed’ (1) implies that the
shock pulse measurement is preceded by a measure-
ment of the rpm.
Measure RPM simultaneously
‘Measure RPM simultaneously’ (2) is normally not used.
With this setting on, you are forced to measure the
rpm simultaneously with the shock pulse measurement.
RPM Trigger
When measuring on variable speed machines, an
‘RPM trigger’ can be used to determine when to start
a measurement, ensuring that it is carried out at an
appropriate speed. The RPM trigger can be used on
applications where useful readings can be obtained
only within a limited RPM range, such as in cranes.
‘RPM trigger’ (3) can be set to ‘RPM run up’ or ‘RPM
run down’. ‘RPM run up’ means Leonova will initiate
the measurement, then wait for the machine to speed
up to the level input under ‘Trigger level’ before it
starts recording the signals. With ‘RPM run down’,
Leonova waits for RPM to slow down to the ‘Trigger
level’ setting.
Under ‘Delay time’, you can specify a number of
seconds during which Leonova will delay the start of
measurement. This setting is optional.
SPM Spectrum
An SPM spectrum measurement can be carried out
along with the dBm/dBc measurement. It is measured
in addition to the ordinary shock values.
Mark the ‘SPM Spectrum’ row (4). Press ENTER and
set ‘SPM Spectrum’ to ‘Yes’.
Settings for SPM Spectrum are described on page D:33.
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