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5.9.4
Oscilloscope
•
The oscilloscope is parameterized using SICAM P Par.
•
Three measured quantities are always recorded.
•
Normally, 30 % of the recording is allocated to pre-triggering history.
•
Only one recording is possible. When initiating a new recording, the previous one is deleted.
•
When triggering the oscilloscope via limit violation, the recording can also be executed in the
background.
•
Only the first of several limit violations that trigger a recording is recorded. Further violations
are ignored.
Note
The memory range can be set by the user.
5.9.4.1 Characteristics of „Instantaneous Values" Recording
Record length can be parameterized. The recording time to be saved in the allocated memory
(see chapter 5.9.1) is calculated according to the following formula:
Sampling rate
The sampling rate is adjusted such that there are 64 samples per cycle. Therefore, the sampling
rate is as follows for 50 Hz and 60 Hz respectively:
•
at 50 Hz = 3.20 kHz
•
at 60 Hz = 3.84 kHz
Trigger via Limit Violation
The RMS value of each half wave is calculated and tested for Max/Min violations. If a violation
is detected, recording is triggered immediately. The bandwidth and filter time settings are irrele-
vant here.
Note
The recording type "Instantaneous value" allows to record the measurement values "current"
and "voltage" only.
Power Meter SICAM P 7KG7750/55, Manual
E50417-B1076-C340-A6, Edition 09.2013
AllocatedM
emory
=
t
[
s
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MAX
64
*
16
Byte
5.9 Memory Management
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Byte
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*
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