MTS Multipurpose Elite - Manual (Page 358)

Hz system rate, the function generator and RPC data acquisition may not stay synchronized after
a hold and resume. There can be an additional phase shift between the drive and response after
each hold and resume.
The up-sampling filters are designed to begin cutting off the signal at 35% of the sampling rate and to be
60 dB down at 65% of that rate. When a time history is entered into this activity, the application checks
the signal sampling rate and determines whether it can be supported. If not, an error message is generated.
Time History Controller Rates
Time History rates supported by the controller are dependent on the system rate specified in your controller
hardware interface file:
Time History Controller Rates
File Rate (Hz) System Rate (Hz)
1024, 512, 409.6, 256, 204.8, 128, 102.4 1024
2048, 1024, 512, 409.6, 256, 204.8, 128, 102.4 2048
2048, 1024, 512, 409.6, 204.8 4096
Note:
Playing out the RPC drive files at 128 Hz requires a system rate of 1024 Hz. For controllers equipped
with MTS Series 494 hardware, playout of RPC drive files at 409.6 requires a system rate of 2048
Hz or 4095 Hz. Controllers equipped with MTS Series 494 hardware do not support playout of RPC
drive files at 409.6 Hz with a system rate of 1024 Hz. When using this sampling rate with a 1024
Hz system rate, the function generator and RPC data acquisition may not stay synchronized after
a hold and resume. There can be an additional phase shift between the drive and response after
each hold and resume.
The up-sampling filters are designed to begin cutting off the signal at 35% of the sampling rate and to be
60 dB down at 65% of that rate. When a time history is entered into this activity, the application checks
the signal sampling rate and determines whether it can be supported. If not, an error message is generated.
358 | MTS TestSuite
Test Activities