HBM AD105D, Operating Manual, Page: 11 / 44

Structure and mode of operation
AD105D
A05569_01_X00_00 HBM: public
9
3.2 Signal conditioning
FMD
ASF ICR
SZA
SFA NOV, RSN
LDW, LWT
LIC
TAV, TAS
Net
measured
value
Gross
measured
value
Digital
input
Digital
output
Sample
rate
Factory
calibration
Filter Tare
A
D
User-defined
scaling
Lineari-
zation
IN
OUT
TAR
ZTR, ZSE
Fig. 3.3 Signal conditioning
Digitization is followed by filtering, using digital filters adjusted by the software
(
FMD , ASF ). The ICR command changes the output rate (measured values
per second).
In the working standard calibration of the transducer electronics (as-delivered
condition), 0 mV/V corresponds to zero and the maximum capacity is either
1,000,000 digits (
NOV ≠0), or 5,120,000 digits ( NOV =0). The two parameters
LDW and LWT enable you to adapt the characteristic curve to your require­
ments (scale curve) and you can use the NOV command to standardize the
measured values to the required scaling value (e.g. 3000 d). Detailed informa­
tion can be found in the command documentation in the Online Help for the
PanelX program.
You also have the opportunity to
S
switch from gross to net signals,
S
activate an automatic zero on start up function,
S
activate an automatic zero tracking function,
S
linearize the input signal with a third order polynomial,
S
activate various digital filters. Filters with cut-off frequencies below 1 Hz,
fast-settling filters for dynamic measurements, notch filters, and mean value
filters are available.