Vishay Micro-Measurements System 7000 Programmer’s Reference Manual
Page 25 of 142
And an example in different wording, if your scan rate is 2000 scans/sec (2kHz) and you would
like to record at a rate of 10 scans/sec (10Hz):
Skip_Count = (2000 /10) - 1 = 199 scans
Burst Count
The burst count is used when recording in burst mode and allows you to specify how many
recordings to store during each recording burst. It is used in conjunction with the burst skip count.
The burst count can be considered the “number of scans to record during each burst”.
For example, if your scan rate is 100 scans/sec and you would like to record 400 scans during
each burst, the burst count is simply 400.
You may also consider the burst from the perspective of “interval of time” and calculate the
number of scans to record as follows:
Burst_Count = (Recording_Rate * Record_Time)
For example if you have a scan rate of 100 scans/sec and you would like to record data for 5
seconds
Burst_Count = 100 * 5 = 500 scans
Burst Skip Count
This value is used when recording in Burst mode. It allows you to configure the interval between
each burst.
If you would like to schedule recording to occur at a recurring rate, calculate
Burst_Skip_Count = (Scan_Rate * Recording_Interval) –
Burst_Count - 1
For example if your scan rate is 10 scans/sec and you would like to have 2 scans recorded every 5
seconds
Burst_Skip_Count = (10 * 5) – 2 - 1 = 47 scans
LabVIEW Configure Time Based Recording VI
Active X ConfigureTimeBasedRecording method
Low-level Set Time-Based Recording Mode command
Set Time-Based Recording Skip Count command
Set Time-Based Recording Burst Count command
Set Time-Based Recording Burst Skip Count command
How to set up intermittent recording
You may combine the skip count, burst count, and burst skip count to set up intermittent
recording. For example, you have a scan rate of 2 kHz and wish to record at a rate of 1 kHz.
Further you wish to only perform recording for 30 seconds every 5 minutes. In other words, you
will record a 30 second “burst” of data every 5 minutes (300 seconds). That 30 second burst will
have a recording rate of 1000 samples/second. Calculate as follows:
Skip_Count = (2000 / 1000) - 1 = 1 scan
Burst_Count = 2000 * 30 = 60000 scans
Burst_Skip_Count = (2000 * 300) –60000- 1 = 539999 scans
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