Counting Of Burst; Select Trigger Source - UNI-T UTG9504T User Manual

Burst period (period of pulse string) is only for N cycle mode, which is mean the time from one pulse string to
the next pulse string. When trigger source is external or manul, trigger period will be hidden in parameter list.
The range of burst period (period of pulse string) can set to 1μs~500s; the default range is is 5.000ms. Rotate
multifunction knob or tap TrigPeriod tab to pop-out visual numeric keyboard to enter values and select unit.
Burst period (period of pulse string)≥waveform period×cycle number（number of pulse string）At here,

waveform period is the reciprocal of the waveform frequency which mentioned in the Select Burst.
If burst period (period of pulse string) is too short, the waveform generator will increase the designated

period to output a designated number of cycles.

3.3.5 Counting of Burst

In N cycle mode, pulse string counting is used to specify the number of waveform period. It is in the range of
1~50000 periods and 2 by default. In N cycle mode, rotate multifunction knob, push direction key or tap Cycle tab to
pop-out visual numeric keyboard to enter values and select unit.
Cycle number< Trigger period × Waveform frequency

If cycle number exceeds the above limit,the waveform generator increase the pulse string period to adapt the

designated pulse string count automatically ( the waveform frequency won't change)

3.3.6 Select Trigger Source

The waveform generator will output a frequency sweep when receive a trigger signal and wait next trigger source. The trigger
source of frequency sweep can be internal, external and manual. Rotate multifunction knob or tap TrigSrc to select the trigger
source.
1) The waveform generator will continue output the designated frequency when in internal trigger source. The
output pulse string frequency controlled by pulse string period. The waveform can output the pulse string of N
cycle and infinite type.
2) The waveform generator will trigger by the external digital modulation terminal (FSK Trig connector) on the back
panel when in external source. The waveform generator output pulse string upon receiving a TTL pulse with
designated polarity.
Note: In external triggrt source, trigger output will be hidden in parameter list. Because the trigger output is also
output by the external digital modulation terminal (FSK Trig connector). This terminal can not be the external
trigger input and internal trigger output at the same time.
3) Manual tigger source present in the current channel setting interface on the right side of the screen. Tap Manual
to output a pulse string of N cycle or Inifinite mode.
UTG9000T Series Function Abitrary Waveform Generator
114