•  Frequently Asked Questions
  • Q. How do I update the instrument firmware?
  • Q. What is that Globe icon? It wasn't there before.
  • Q. My touchscreen is not responding
  • Q. There is an arrow cursor on the screen. How do I remove it?
  • Q. How do I enable standby mode?
  • Q. How do I shut down completely?
  • Q. Why is there only one combined connector for the Power Meter and the InstaCal?
  • Q. I pressed the power button but the power LED is slowly flashing on and off. Why?
  • Q. What do these icons mean, and why do some of them change or disappear?
  • Q. What is Advanced Mode?
  • Q. What is Classic Mode?
  • Q. How do I select Classic Mode, and how can I tell what mode I am in?
  • Q. Why do many of the icons disappear in Classic Mode?
  • Q. How do I switch modes?
  • Q. My cable type does not show up in the cable list. What can I do?
  • Q. What is the difference between OSL calibration and InstaCal?
  • Q. What is InstaCal?
  • Q. I already own the ICN50B InstaCal module. Can I use it with the S331L?
  • Q. I saved a measurement with more than 517 points but when I open it with HHST, there are only 517 points.
  • Q. I uploaded a .dat file from my PC to the S331L using Line Sweep Tools but when I try to recall it I cannot see the preview display.
  • Q. What is easyTest Tools™?
  • Q. What is the icon on the Menu screen?
  • Q. Can I use my E series easyTest files (*.ett) with the S331L?

Frequently Asked Questions

Q. Can I use my E series easyTest files (*.ett) with the S331L?