Model 2701 User’s Manual
Range, Digits, Rate, Bandwidth, and Filter
4-15
NOTE
While the filter processes readings, the FILT annunciator blinks. Readings that
are being displayed while the FILT annunciator blinks are not final filtered
readings. When the FILT annunciator stops blinking, the filter has settled.
Figure 4-2
Moving and repeating filters
Filter window
The digital filter uses a “noise” window to control filter threshold. As long as the input
signal remains within the selected window, A/D conversions continue to be placed in the
stack. If the signal changes to a value outside the window, the filter resets and the filter
starts processing again starting with a new initial conversion value from the A/D
converter.
The noise window, which is expressed as a percentage of range (or maximum temperature
reading), allows a faster response time to large signal step changes (e.g., scanned
Conversion #10
#9
#8
#7
#6
#5
#4
#3
#2
#1
Conversion
Average
Reading
#1
Conversion #12
#11
#10
#9
#8
#7
#6
#5
#4
#3
Conversion
Average
Reading
#3
Conversion #11
#10
#9
#8
#7
#6
#5
#4
#3
#2
Conversion
Average
Reading
#2
A. Type - Moving Average, Readings = 10
Conversion #10
#9
#8
#7
#6
#5
#4
#3
#2
#1
Conversion
Average
Reading
#1
Conversion #20
#19
#18
#17
#16
#15
#14
#13
#12
#11
Conversion
Average
Reading
#2
Conversion #30
#29
#28
#27
#26
#25
#24
#23
#22
#21
Conversion
Average
Reading
#3
B. Type - Repeating, Readings = 10
2701-900-01.book Page 15 Wednesday, August 3, 2011 9:43 AM
Summary of Contents for 2701
Page 344: ...12 CommonCommands 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...
Page 366: ...15 SCPIReferenceTables 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...
Page 393: ...A Specifications 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...
Page 399: ...B Model7700ConnectionGuide 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...
Page 410: ...C StatusandErrorMessages 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...
Page 417: ...D SignalProcessing SequenceandDataFlow 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...
Page 430: ...E MeasurementConsiderations 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...
Page 450: ...G KE2700InstrumentDriver Examples 2701 900 01 book Page 1 Wednesday August 3 2011 9 43 AM...