User manual

Operator's Manual
3. Choose the Slope (edge) of the wave on which to trigger.
4. Choose the type of signal Coupling at the input. Choices are:
l 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.
l AC - The signal is capacitively coupled. DC levels are rejected, and frequencies below 10 Hz are
attenuated.
l LFREJ - The signal is coupled through a capacitive high-pass filter network, DC is rejected and
signal frequencies below 400 kHz are attenuated. For stable triggering on medium to high
frequency signals.
l HFREJ - Signals are DC coupled to the trigger circuit, and a low-pass filter network attenuates
frequencies above 1 MHz (used for triggering on low frequencies).
DIGITAL EDGE
1. Choose the Source digital line.
2. Choose the Slope (edge) upon which to trigger.
3. Choose the Logic Family that marks the High-Low logic threshold. To enter a custom threshold, choose
Logic Family User Defined and enter the voltage Level.
NOTE: The Logic Family will default to any Logic Setup associated with that line in a previous digital
group setup.
43