Parameterization and programming
ELX3351
53
Version: 1.3.1
Fig. 43: Diagram signal delay (step response)
2.2 Signal delay (linear)
Keyword: Group delay
Describes the delay of a signal with constant frequency
A test signal can be generated externally with a frequency generator, e.g. as sawtooth or sine. A
simultaneous square wave signal would be used as reference.
The signal delay [ms, µs] is then the interval between the applied electrical signal with a particular amplitude
and the moment at which the analog process value reaches the same value.
A meaningful range must be selected for the test frequency, e.g. 1/20 of the maximum sampling rate.
Fig. 44: Diagram signal delay (linear)
3. Additional information:
may be provided in the specification, e.g.
3.1 Actual sampling rate of the ADC (if different from the channel sampling rate)
3.2 Time correction values for run times with different filter settings
…
