Teledyne LeCroy WaveRunner МXi-A Getting Started Manual - Manual (Page 45)

Getting Started Manual
922138-00 Rev A 37
B
excursion of the AC power line.
Touch inside the Level field. In the pop-up numeric
keypad, enter a value in millivolts or use the
up/down buttons to increase or decrease the value
in increments of 1 mV. Or move the slider bar to
increase or decrease the values. See Dialog Menu
section for more information on the slider bar.
Touch inside the Coupling field and select a coupling
type.
o DC – All the signal’s frequency components
are coupled to the trigger circuit for high
frequency bursts or where the use of AC
coupling would shift the effective trigger
level.
o AC – The signal is capacitively coupled. DC
levels are rejected, and frequencies below 50
Hz are attenuated.
o LFREJ - The signal is coupled through a
capacitive high-pass filter network, DC is
rejected and signal frequencies below 50 kHz
are attenuated. For stable triggering on
medium-to-high frequency signals.
o HFREJ - Signals are DC coupled to the trigger
circuit and a low-pass filter network
attenuates frequencies above 50 kHz. This is
used for triggering on low frequencies.
Choose Positive, Negative, or Window slope.
Window slope sets a threshold above and below the
trigger level beyond which the signal must pass to
generate a trigger. The slope can be either positive or
negative.