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Table 23 - Primary Path Decimation Menu: SRD 1...5
Primary Path
Dec
FMAX
SRD = 1
Dec < 5 is not allowed
-
5
2747
6
2289
9
1526
12
1144
13
1056
14
981
15
916
Table 22 - Data Source Options for Each Measurement
Measurement
Signal Sources
ADC Out
gSE
Tracking Filters
Overall
Not 1x
SMAX
Shaft Absolute
(1)
TWF
(1)
(1)
FFT
(1)
(1)
FFT Bands
(1)
(1)
Demand Data
(1)
(1) ADC Out is not available for 40 kHz personalities.
(2) Alternate Path is available only when enabled (not "Off")
Table 23...Table 27
selectable Sample Rate Divide (SRD) values (selected by the ADC FMAX
menu). The table shows the decimation value that is written to the
configuration assembly, and the FFT FMAX that the measurement can
output.
The menus do not provide selections for the 255 possible decimation values.
Rather, the menus present only selected decimated values that represent
relatively uniform increments from about 30 Hz to the ADC FMAX.
If the Measurement Type (Hardware Configuration page) is either of the
Aeroderivative types, then the Primary Path FMAX selections are the same as
the types that are for listed for the Alternate Path. This similarity is due to the
applied -60 dB/octave filter, vs. the standard -24 dB/octave primary path filter
that is used for the aeroderivative measurement type.
Dec
FMAX
Dec
SRD = 2
SRD = 3
1
20600
1
2
3433
2
3
2289
3
4
1717
4
5
1373
5
6
1144
6
7
981
7
8
858
8
Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Primary Path
Mid-Filter
Post-Filter
(2)
(3)
(3)
(4)
(3)
(4)
(3)
(4)
(3)
(4)
include the Decimation menu selections for each of the
FMAX
Dec
SRD = 4
13733
1
2289
2
1526
3
1144
4
916
5
763
6
654
7
572
9
Measurement Definition
Chapter 4
Alternate
(2)
Path
(5)
(5)
(5)
(5)
FMAX
Dec
FMAX
SRD=5
10299
1
8240
1717
2
1373
1144
3
916
858
4
687
687
5
549
572
6
458
490
7
392
381
9
305
129
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