Commands and Parameter LDM41A and LDM42A Manual
Page 32 ASTECH GmbH
The available value range for measuring time is 0 to 25. Basically, the greater
the time setting is the more time will be available for measurement and the
lower the resulting measuring rate.
An exception there from is zero-value. In this case, the LDM41A and LDM42A
automatically picks the smallest possible time value for measurement!
The LDM41A and LDM42A comes factory-set with ST = 0.
ST is effective in the DT, DF and DM mode of operation.
The measuring time setting option can also be used to modify the measuring
rate, for example, in order to restrict the data volume or for synchronization
purposes. Measuring time can only be set as an approximate value, because
the underlying principle of measurement is subject to certain variances that
cannot be accounted for:
DT measuring mode → measuring time= ST x 240 ms (except ST = 0)
DS measuring mode → measuring time = ST x 150 ms (except ST = 0)
Example:
The target distance is 25 m, but the target’s reflectance is not ideal. With a
measuring time setting of ST 2, E15 will be output following measurement.
The user must increase the time (ST > 2) or set auto (ST 0) to measure in this
case!
One should work in DW or DX measuring mode where stable
measuring times are required.
8.12 SF – display/set scale factor
SF multiplies a calculated distance value with a user-selectable factor for
changes in resolution or outputs in a different unit of measure. The scale
factor may also be negative. Standard setting is 1.
The scale factor influence the output of measurement results, Offset (OF),
Alarm Centre (AC), Alarm Hysteresis (AH), Range Begin (RB) and Range End
(RE)!
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