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155
SVAN 979 User Manual
Measurement
Trigger
Screen that enables configuring triggering of the
measurement/integration process with parameters:
Trigger, Source, Level
and
Gradient
.
Chapter
Trigger
Position that switches
Off
or on the measurement trigger
by selecting its type:
Slope +, Slope
–, Level +, Level –,
Grad +
or
External
.
If the instrument is waiting for the trigger condition, the
appropriate trigger icon is flashing on the display
alternatively with the „measurement” icon.
Chapter
Slope +
Type of trigger that starts the measurement/integration
by the duration of the
Integration Period
on condition:
rising value of the RMS result (
Source
) integrated during
0,5 ms passes above the threshold value (Level).
Chapter
Slope -
Type of trigger that starts the measurement/integration
by the duration of the
Integration Period
on condition:
falling value of the RMS result (
Source
) integrated during
0,5 ms passes below the threshold value (Level).
Chapter
Level +
Type of trigger that starts the 1-second measurement/
integration on condition: value of the RMS result (
Source
)
integrated during 0,5 ms is greater than the threshold
value (
Level
). In other cases, the instrument continues
checking the trigger condition every 0,5 mc. During one
measurement cycle the instrument performs as many 1-
second
integrations
as
many
seconds
the
Integration Period
consists and stops the measurement
cycle.
Chapter
Level -
Type of trigger that starts the 1-second measurement/
integration on condition: value of the RMS result (
Source
)
integrated during 0,5 ms is lower than the threshold value
(
Level
). In other cases, the instrument continues
checking the trigger condition every 0,5 mc. During one
measurement cycle the instrument performs as many 1-
second
integrations
as
many
seconds
the
Integration Period
consists and stops the measurement
cycle.
Chapter
Grad +
Type of trigger that starts the 1-second measurement/
integration on condition: value of the RMS result (
Source
)
integrated during 0,5 ms is greater than the threshold
value (Level) and the gradient of this Source is greater
than the threshold level (
Gradient
). In other cases, the
instrument continues checking the trigger condition every
0,5 mc. During one measurement cycle the instrument
performs as many 1-second integrations as many
seconds the
Integration Period
consists and stops the
measurement cycle.
This type of trigger has the same logic as
Level +
trigger,
but the trigger condition requires also gradient level to be
exceeded.
Chapter
Summary of Contents for SVAN 979
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