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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.
3) In case of manual trigger, backlight of Trigger on front panel flashes. Frequency sweep is
output upon pressing Trigger .
3.2.6 Trigger Output
In case of internal or manual trigger source, the trigger signal (square wave) can be output through
external digital modulation interface (FSK Trig connector), compatible with TTL level. The default
trigger output is "OFF". To change it, you can use multi-functional knob and direction key on the
UTG2000B Series
Figure 3 - 38 Select external trigger source
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