CSI 2130 Reference Manual - Emerson Process Management

Changing Fmax adjusts the Sample Rate as they are related. Fmax = (Sample
Rate)/(2.56). In addition, changing Fmax will change the Sample Time, but
changing the Sample Time does not change Fmax. Fmax = (Number of Samples)/(2.56*Sample
Time)
F3: The Sample Rate value defines the rate of acquisition in number of samples
per second. Values may range from 25.6 to 51200. Setting the Sample Rate
automatically adjusts Fmax: Sample Rate = 2.56*Fmax.
In addition, changing the Sample Rate adjusts the Sample Time, but setting the
Sample Time does not adjust the Sample Rate. Sample rate = (Number of Samples)/(Sample
Time).
F4: The Samples value sets the number of samples to collect. The minimum
number of samples that can be collected is 512. The maximum number of samples
is 16777216 for a single channel acquisition and 8388608 for a dual channel
acquisition. Also the maximum number of samples that can be collected is
limited by the amount of memory available for data storage.
Changing the number of samples will adjust the Sample Time. Number of Samples
= Sample Rate * Sample Time.
F5: The Sample Time value sets the duration of the acquisition in seconds. The
sample Time minimum is 0.01 or the amount of time to acquire a minimum of
512 samples. The maximum Sample Time is 655360 for a single channel acquisition
and 327680 for a dual channel acquisition. The Sample Time is also limited
by the amount of memory available for data storage.
Note
In most application, the operator will only specify the Fmax (F2) and the
Sample Time (F5). Based on those 2 values, the Sample Rate (F3) and
Number of Samples (F4) will be adjusted automatically.
F7: This key takes you to the tach setup screen. This is the same tach setup
screen as in Analyze (more details are on page 7-10). Parameters that can be
modified include: Pseudo Tach Enabled/Disabled, Tach Power On/Off, Trigger
Level, Edge Delay and RPM display.
9-10 Advanced Transient