The DSA815 features two pass fail limit lines, one upper and one lower. This document describes how to manually configure the upper limit line.
• In the control menu on the front pane, press Trace/P/F
• Select Pass/Fail
• Switch On
• Press Setup
• Select Upper Limit
• Select Edit
• Select point 1. This is the start of the limit line. The X Axis must be non-zero. We selected 0Hz with the -20dBm amplitude for the initial low frequency portion of the limit line.
NOTE: The Keypad is a convenient way to enter the values. Just type the numbers and select the desired units.
• Set point 2: X Axis 100MHz, Amplitude -20dBm, Connected = Yes
• Set point 3: X Axis 100.000001MHz, Amplitude -10dBmm, Connected = Yes
• Set point 4: X Axis 1.5GHz, Amplitude -10dBmm, Connected = Yes
• In the control menu on the front pane, press Trace/P/F
• Select Pass/Fail
• Select Setup
• Enable test by selecting Test ON
• You can also enable Fail Stop and enable Beeper (page 2 of the setup menu)
• You can store the limit lines internally or to an external USB stick by selecting storage, and set the filter type to Limit