HBM Genesis GEN5i User Manual page 371

Portable, integrated data acquisition system
Table of Contents

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Real-Time Analysis
Cycle Source
Timer
Cycle detect
Cycle calculator
Number of calculators
Analog channel calculator
Number of calculators
Timer/Counter channel calculator
Number of calculators
Trigger detector
(1)
Cycle period range depends on signal wave shape and hysteresis setting. Specified for Sinewave with 25 % Full Scale hysteresis.
Acquisition Modes
Single sweep
Multiple sweeps
Slow fast sweep
Continuous
Dual
I2679-4.0 en
Determines the periodic based real time calculations
Supports timer or signal level crossing based period generation
Time interval
1.0 ms (1 kHz) to 60 s (0.0167 Hz)
Level crossing
Monitors one analog channel using a user selectable signal level and signal hysteresis to
dynamically determine the cyclic nature of the signal.
Cycle count
Sets the counted number of cycles used for periodic calculation output
(1)
Maximum detectable Cycle period 0.25 s (4 Hz)
Cycle period
Minimum detectable period 0.91 ms (1.1 kHz)
Calculations stops when Cycle period exceeds maximum cycle period (0.25 s).
Cycle count is temporarily increased when Cycle period becomes shorter than minimum
Cycle period (0.91 ms).
Exceeding Cycle period or automatic Cycle count increases are indicated with time event
notification in channel data.
2; At highest sample rate
Calculations
Cycle and Frequency
Cycle
Square wave signal, 50 % duty cycle.
Represent Cycle Source; rising edge indicates start of new calculation period.
Frequency
Detected cycle interval is converted to a frequency (1 / cycle time of input signal)
6; At highest sample rate
Calculations
RMS, Minimum, Maximum, Mean, Peak to Peak, Area, Energy
2; At highest sample rate
Calculations
Frequency; Requires Timer/Counter channel in frequency mode
Number of detectors
9; One each for Cycle frequency, every analog channel and timer/counter calculator
Trigger level
User defined per detector. Generates trigger when calculated signal crosses the level.
Trigger output delay
Triggers on calculated signals are 100 ms delayed. Internally time corrected for correct
sweep triggering. Internally an additional 100 ms pre-trigger length is added to every
channel using this trigger as trigger source to enable the time correction. This reduces the
maximum sweep length by 100 ms.
Triggered acquisition to on-board memory without sample rate limitations; for single
transients or intermittent phenomena. No aggregate sample rate limitations.
Triggered acquisition to on-board memory without sample rate limitations; for repetitive
transients or intermittent phenomena. No aggregate sample rate limitations.
Identical to single sweep acquisition with additional support for fast sample rate switches
during the post-trigger segment of the slow rate single sweep settings. No aggregate sample
rate limitations.
Direct storage to PC or mainframe controlled hard disk without file size limitations; triggered
or un-triggered; for long duration recorder type applications. Aggregate sample rate
limitations depending on Ethernet speed, PC used and data storage media used.
Combination of Multiple sweeps and Continuous; recorder type streaming to hard disk with
simultaneously triggered sweeps in on-board memory. Aggregate sample rate limitations
depending on Ethernet speed, PC used and data storage media used.
GEN5i
371

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