Chapter 2 101
Instrument Functions: A - L
Display
Instrument Functions: A - L
2.5.5.1.4 Margin (On Off)
Turns margin On or Off. Selecting On allows you to set a limit-line offset for the selected
limit line. Only positive margins are allowed for lower limits and only negative margins
are allowed for upper limits. The margin lines are displayed in a light gray color. If the
limit lines are off and margin is on, the trace is checked against the margin, then a pass or
fail margin is displayed. Either
Limit or Margin, as well as Test, must be turned on to turn on
a limit test.
Key Path:
Display, Limits, Limit 1
Display
, Limits, Limit 2
Dependencies/
Couplings: If neither of the limits or margins are turned on, the test cannot be turned
on. That is, if both
Limit and Margin are set to Off, then the test is turned off
automatically. If a margin has been set for this limit line, and this key is
used to change the limit type, then the margin values is reset to 0 dB.
State Saved: Not saved in instrument state. Survives preset and power cycle.
Factory Preset
and *RST: Off
Factory
Default: Off (when a limit line is created). Default value is not affected by a preset.
Fundamental
Units: dB
Terminators: dB,
−dB
Default Terminator: dB
Resolution: 0.1 dB
Knob Increment:
−0.1 dB (Upper); 0.1 dB (Lower)
Step Key
Increment:
−1 dB (Upper); 1 dB (Lower)
Range: 0 to
−40 dB (Upper); 0 to 40 dB (Lower)
History: Added with firmware revision A.03.00
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