User manual

Trigger
R&S
®
RTB2000
59User Manual 1333.1611.02 ─ 06
"Auto"
The instrument triggers repeatedly after a time interval if the trigger
conditions are not fulfilled. If a real trigger occurs, it takes prece-
dence. This mode helps to see the waveform even before the trigger
is set. The waveform on the screen is not synchronized, and succes-
sive waveforms are not triggered at the same point of the waveform.
"Norm"
The instrument acquires a normal waveform only, if a trigger occurs,
that is, if all trigger conditions are fulfilled. If no trigger occurs, no
waveform is acquired and the last acquired waveform is displayed. If
no waveform was captured before, nothing is displayed.
Remote command:
TRIGger:A:MODE on page 283
Trigger Type
Selects the trigger type.
"Edge"
Triggers on signal edges.
See Chapter 5.4, "Edge Trigger", on page 60.
"Width"
Triggers on pulse width.
See Chapter 5.5, "Width Trigger", on page 62.
"Video"
Triggers on various PAL, NTSC and HDTV standard video signals.
See Chapter 5.6, "Video Trigger", on page 65.
"Pattern"
Triggers on logical combinations of the input channels.
See Chapter 5.7, "Pattern Trigger", on page 67.
"Timeout"
Triggers on signal level timeout.
See Chapter 5.8, "Timeout Trigger", on page 69.
"Line"
The line trigger uses the waveform of the power supply's alternating
line voltage (typically 50 Hz or 60 Hz AC) as the trigger signal source.
Use this trigger to detect issues related to the frequency of the power
grid.
The line trigger does not have any settings.
"Serial Bus"
Triggers on a serial bus. Requires that at least one protocol option
R&S RTB-K1, -K2, or -K3 is installed, a serial bus is configured, and a
decoded signal is available.
See Chapter 12.1.1, "Protocol - Common Settings", on page 173.
Remote command:
TRIGger:A:TYPE on page 284
Source
Selects the trigger source.
"C1, C2, C3,
C4"
Select one of the analog input channels as trigger source.
"D0 to D15"
Select one of the digital channels as trigger source if MSO option
R&S RTB-B1 is installed.
Not available for video trigger.
"Extern"
Sets the external trigger input on the front panel as trigger source.
Available for edge and video trigger.
General Trigger Settings