Triggers
R&S
®
RTM20xx
44
User Manual 1317.4726.02 ─ 01
"Both"
Selets the rising as well as the falling edge.
Remote command:
Coupling
Sets the coupling for the trigger source.
"AC"
Alternating Current coupling. A 5 Hz high pass filter is connected into
the trigger path and removes the DC offset voltage from the trigger sig-
nal.
"DC"
Direct Current coupling. The trigger signal remains unchanged.
Remote command:
LF Reject
Sets the trigger coupling to high frequency. A 15 kHz high-pass filter is connected into
the trigger path and removes lower frequencies from the trigger signal. Use this mode
only with very high frequency signals.
Remote command:
HF Reject
Turns an additional 5 kHz low-pass filter in the trigger path on or off. This filter removes
higher frequencies and is available with AC and DC coupling.
Remote command:
Low-pass
Turns an additional 100 MHz low-pass filter in the trigger path on or off. This filter removes
higher frequencies and is available with AC and DC coupling.
Remote command:
Hysteresis A / B
Sets a hysteresis range around the trigger level. If the signal jitters inside this range and
crosses the trigger level thereby, no trigger event occurs. Thus, hysteresis avoids unwan-
ted trigger events caused by noise oscillation around the trigger level.
Hysteresis is available for the edge trigger (A-event and B-event) and for the width trigger.
To see the hysteresis on the display, activate "Trigger Hyst." in the "Display > Auxillary
Cursors" menu.
The hysteresis value depends on the vertical scale.
Remote command:
Reference for Triggers
