R&S AFQ100A Operating Manual page 137

R&S AFQ100A
Slope - Segment
Trigger
The Control Line Setup section is where the threshold and impedance of the trigger inputs CLOCK IN
/ TRIG / NEXT are selected.
Threshold - Trigger
Impedance - Trigger
The Waveform Diagram section indicates the graph for the selected waveform type.
Waveform Diagram -
Trigger
1401.3084.32
Selects the slope of the active edge of the external trigger signal. The
slope can only be set for an external trigger signal that is fed in via the
NEXT connector on the rear panel.
The rising edge is selected.
Positive
Remote-control command:
SOUR:INP:TRIG:SEGM:SLOP POS
The falling edge is selected.
Negative
Remote-control command:
SOUR:INP:TRIG:SEGM:SLOP NEG
Sets the high/low threshold for the inputs CLOCK IN, TRIG and NEXT.
A threshold can only be set with an external trigger source.
Remote-control command:
SOUR:INP:CONT:THR
Sets the impedance value for the inputs CLOCK IN, TRIG and NEXT.
The lower value, 50 Ohm, is recommended for high clock frequencies
or signals with high slew rates. The impedance is set for external
trigger signals.
Remote-control command:
SOUR:INP:CONT:IMP
Displays schematically the graph of the currently loaded waveform,
either as standard sine waveform or as multi segment waveform. After
the instrument switch on, the graph of the last loaded waveform is
displayed.
Note:
The curves plotted in this dialog box only are textbook examples,
not measured waveforms. They are intended to visualize the
trigger settings more clearly.
The graph shows the generation of the waveform
Shown for
depending on the selected trigger configuration.
standard
This section is shown only if a standard
waveforms
waveform is loaded.
The graph shows the generation of the waveform
Shown for
depending on the selected trigger and segment
segmented
trigger configuration. This section is shown only if
waveforms
a multi segment waveform is loaded.
4.26
Baseband Block
E-3