User Manual
e)Select Trigger Source
The signal generator generates frequency sweep output upon receiving a trigger signal
and then waits for the next trigger signal. The trigger source of frequency sweep can be
internal, external or manual. To change it, you can use multi-functional knob and direction
key on the interface for selecting frequency sweep mode or press soft function key
Param → TrigSrc
1) In case of internal trigger, waveform generator will output continuous frequency sweep,
the rate of which is determined by frequency sweep time.
2) In case of external trigger, waveform generator will accept a hardware trigger that has
been applied to external digital modulation interface (FSK Trig connector)of back panel.
The waveform generator will start frequency sweep upon receiving a TTL pulse with
designated polarity. Note: in the event of external trigger source, trigger output will be
hidden in parameter list, as trigger output is also achieved through external digital
modulation interface (FSK Trig connector). This interface cannot be simultaneously
used as external trigger input and internal trigger output.
Figure 4- 37 Select trigger source
Figure 4- 38 Select external trigger source
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