Instructions

38 T3VNA User Manual
Table 2-20 Trigger Setup
Parameter Explanation
Default 0 dBm
Range -300 dBm - 50 dBm
Unit dBm
Knob Step 1 dBm
Direction Key Step 10 dBm
2.2.5.3 External
In this mode, an external signal (TTL signal) is input from the [TRIGGER IN] connector at the rear panel
and trigger signals are generated when this signal fulfills the specified trigger edge condition.
Set the trigger edge in external trigger to the rising (Pos) or falling (Neg) edge of the pulse.
2.2.6 Limit
The analyzer supports Pass/Fail test function. In this function, the measured curve will be compared
with the pre-edited curve. If the related rules are met, the result is “Pass”, else the result is “Fail”.
2.2.6.1 Limit1
Enable or disable limit1.
2.2.6.2 Limit1 Edit
Edit the properties of limit1.
Table 2-21 Limit1 Edit Menu
Function Explanation
Type Select upper or lower limit type. The default value is Upper.
Mode Select limit line or limit point. The default value is Line.
Set the number of the point to be edited if you selected the point type, and
the range is 1 - 100.
Add point Add a new point for editing.
X-axis Edit the X-axis value (frequency or time) of the current point.
Amplitude Edit the amplitude of the current point or line.
Del Point Delete the point whose number is selected in Mode.
Del All Delete all the points.
Save/Load Save or load the limit file.