Rinstrum - 5200 Communications Manual Rev 1.2
Page 34 0025-605-120
2.4.23. LWT: Calibrate Span
This is used to calibrate the span. It is possible to calibrate the span by either
having no load on the scale base or by entering the calculated signal directly.
General Details
No. of Parameters Save Changes Changes Used Increment Trade Counter
0 (2 if direct
calibration)
With TDD1 Immediately Yes
Parameter Details
Parameter Description Range Default Required
1 Calibration Type 0
1
Normal calibration
Direct calibration
0 No
2 Signal Value of
Span (in mV/V x
10000)
Signed number (decimal)
with no decimal points
No
The LWT?1; query returns the span calibration.
• Calibration with Weight
Due to increased averaging, this calibration process takes some time to complete.
As a result it is necessary to monitor the calibration process to determine when it is
finished. To do this, issue a LWT? Query. Following is a list of the possible
calibration status responses.
Calibration Status
Status Value Description
0 Calibration finished successfully
1 Calibration in process (busy)
103 Error Span to low (<0.1mV/V) Calibration aborted
104 Error Span to high (>3.0mV/V) Calibration aborted
105 No zero calibration
Example
Command Response Details
S01; Select Instrument 1
LWT; 0 CRLF Start span calibration.
LWT?; 1 CRLF Query status of Span Calibration Process
LWT?; 1 CRLF Still Busy
LWT?; 0 CRLF Span Calibration Finished
TDD1; 0 CRLF Save Setting
• Direct Calibration
By using the parameters a calculated span can be set.
Example
Command Response Details
S01; Select Instrument 1
LWT1,12500; 0 CRLF Set Span at fullscale to 1.25mV/V
LWT?1; ^^^12500 CRLF Span is 1.25mV/V
TDD1; 0 CRLF Save Setting
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