To take a threshold scan, first connect to [RCMS](http://cmsrc-gem.cms:20000/rcms/gui/servlet/FMPilotServlet), then create a miniDAQ session or attach to a running session.
From the RCMS interface, click on "Connect".
Open the [xDAQ](http://srv-s2g18-33-01.cms:20100/urn:xdaq-application:service=calibration) calibration suite. In case the calibration suite page was already opened before you clicked on "Connect" in RCMS, reload the page manually.
From the dropdown menu, select the calibration type "S-bit ARM DAC Scan", then set the number of iterations in the "Iterations" text box to 1 and leave all the other parameters to their default values. Click on "Apply settings".
Go back to the RCMS interface, then follow these steps:
1. click on "Configure" and wait for all the subsystems to be in _Configured_ state;
2. click on "Start" and wait for the status of all subsystems to be _Running_;
3. click on "Stop".
Go back to the calibration suite in xDAQ, then click on "Run".
