Dynamic Pressure
Frequency Response:
Direct Filter: “Low Mode” 5Hz. To 4KHz*
“High Mode” 10Hz to
14.75KHz (Fixed Low Pass)
*if no LP filter is chosen, this
extends to approximately
5.285KHz.
“Low” and “High” filtering modes are options on a channel
pair basis. It is possible to select different band pass
options on each channel of a channel pair; however, the
channels within the pair have to operate in the same
filtering mode. Channels 1 and 2 form a pair and channels
3 and 4 form the other pair.
In addition, the signal processing can be set up so that
ONLY channel 1 input voltage is fed to all four channels.
This is “Cascade Mode” (denoted 1->ALL in the 3500
Configuration Software). In “Cascade Mode” the filter
mode options are still selected on a channel pair basis.
“Cascade Mode” was designed so that one transducer
could be used to provide input to four channels for different
filtering requirements. This allows four separate bandpass
filter options and four separate full-scale ranges to be
configured with just one transducer input.
The two modes of filtering provide different “qualities” of
filtering.