Svantek SV 971A - Page 125

SV 971A User Manual
125
Level+
Type of trigger that starts the 1-second
measurement/ integration under the 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 ms. 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
4.2
Level–
Type of trigger that starts the 1-second
measurement/ integration under the 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 ms. 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
4.2
Gradient+
Type of trigger that starts the 1-second
measurement/ integration under the condition:
value of the RMS result (Source) integrated during
0,5 ms is greater than the threshold level (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 ms. 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
4.2
Source
Measured result that is compared with the threshold
level (Level) for triggering – RMS measured in the
first profile: Leq(1).
Chapter
4.2
Level
Threshold level of the Source for triggering
condition fulfilment.
Chapter
4.2
Gradient
Threshold level of the source signal value speed of
changing (Gradient) for trigger condition fulfilment.
Chapter
4.2