NTi Audio XL2 Sound Level Meter - Manual (Page 152)

152
Capture + Tolerances
Advanced Start Functions
You may start the passed/failed measurement by one of the
following possibilities:
Press the XL2 start button • .
Activate the automated level trigger in the tolerance file. •
Activate the digital input 1 via the external I/O interface; e.g. •
a foot switch or a PLC control.
Digital I/O Interface
Result Passed: Output 1
Result Failed: Output 3
Start Measurement: Input 1
Tolerance Management
Tolerance curves can either be imported from txt-files or direct-
ly derived from captured measurements. The XL2 calculates
tolerance bands based on
Single captured results •
Manually generated txt-files on the PC •
Mean average of multiple captures •
Min/Max curves of multiple captures •
Create Tolerance Files Manually on PC
Capture a spectrum on the XL2 Analyzer. •
Enter the tolerance mode and generate a tolerance band for •
the capture.
Select the Capture & Start Tolerance Mode symbol.
•
Confirm with enter • .
Select • Save tol. to SD Card to export the capture tolerance
file. This file includes the reference capture and the tolerance
data. The XL2 generates a txt-file in the folder “Tolerances”.
Open the capture tolerance file with a text editor or MS Ex-
•
cel.
Edit the tolerance data according your requirements. You
•
may delete any unused frequencies. All remaining frequency
data has to remain the same. Any frequency changes will be
discarded by the XL2.