To Select Trigger Coupling; To Select Trigger Noise Rejection And Hf Rejection - Agilent Technologies 6000 Series User Manual

To select trigger Coupling

To select trigger Noise Rejection and HF rejection

6000 Series Oscilloscope User's Guide
1 Press the Mode/Coupling key.
2 Press the Coupling softkey, then select DC, AC, or LF Reject
coupling.
DC coupling allows DC and AC signals into the trigger
•
path.
AC coupling places a 10 Hz (3.5 Hz in 100 MHz bandwidth
•
models) high-pass filter in the trigger path removing any
DC offset voltage from the trigger waveform. The high-pass
filter in the External Trigger input path is 3.5 Hz for all
models. Use AC coupling to get a stable edge trigger when
your waveform has a large DC offset.
LF (low frequency) Reject coupling places a 50 kHz
•
high-pass filter in series with the trigger waveform. Low
frequency reject removes any unwanted low frequency
components from a trigger waveform, such as power line
frequencies, that can interfere with proper triggering. Use
this coupling to get a stable edge trigger when your
waveform has low frequency noise.
TV coupling is normally grayed-out, but is automatically
•
selected when TV trigger is enabled in the Trigger More
menu.
Note that Trigger Coupling is independent of Channel Coupling.
To change Channel Coupling see
1 Press the Mode/Coupling key.
2 Press the Noise Rej softkey to select noise reject or press the
HF Reject softkey to select high frequency reject.
Noise Rej adds additional hysteresis to the trigger circuitry.
•
When noise reject is on, the trigger circuitry is less
sensitive to noise but may require a greater amplitude
waveform to trigger the oscilloscope.
Triggering the Oscilloscope
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