5Key Reference
142 N9342C/43C/44C User’s Guide
Press  X Axis Unit to toggle the frequency domain or 
time domain before you set the parameter of limit 
point.
Margin
Key access: [Limit] > {Margin}
Turns Margin On to set a limit line offset for the 
selected limit line. Either Limit or Margin, must be 
turned on for a limit test to work.
Save Limits
Key access: [Limit] > {Save Limits}
Saves the parameters of the current limit pattern 
in a file (*.LIM).
Enter the user defined filename using the numeric 
keypad and press [ENTER] as a terminator.
Number, alpha characters and underline are all 
valid components of a filename.
Recall Limits
Key access: [Limit] > {Recall Limits}
Recalls files previously saved containing the limit 
parameters that may be frequently used for test 
purposes.