TFG6800 Series Function/Arbitrary Waveform Generator Users’ Guide
Suin Instruments Co., Ltd
48
Trigger signal’s cycle> Sweep time +Hold time+ Return time+ Interval time
3.14.11 Trigger Edge:
Press
〖
Slope
〗
soft key to select the efficient edge of external trigger signal.
The setting for it is only valid when external trigger.
When the rising edge is selected, the sweep will start when trigger signal changes from 0 to 1.
When the falling edge is selected, the sweep will start when trigger signal changes from 1 to 0.
3.14.12 Trigger Output:
Press
〖
Trig Out
〗
soft key to select output mode of the trigger signal. If
Off is selected, there is no trigger signal at output port. If rising edge is selected, the trigger signal
changes from 0 to 1 when sweep starts. When sweep to marker frequency, the trigger signal will
change from 1 to 0. If falling edge is selected, the trigger signal changes from 1 to 0 when sweep
starts. When sweep to marker frequency, the trigger signal from 0 to 1.
3.14.13 Sync Output:
The cycle of sync signal equals to the total time of sweep process. The
rising edge and falling edge of sync signal separately corresponds to the start frequency point and
marker frequency point.
If external or manual trigger is selected, the Sync signal will be determined by external or manual
trigger signal.
3.15 Frequency List
Actually frequency list is an advanced mode of frequency sweep. In common linear or logarithmic
sweep mode, the change of frequency can only be gradually increased or decreased and sweep
speed is slower. While for frequency list mode, user can define the frequency list randomly and
sweep speed is faster. In modern communication, the frequency value of communicating carrier
can hop quickly according to the certain frequency list defined both by sender and receiver, which
also be called frequency-hopping communication. The frequency list could be changed at any time,
even the random variable frequency list could be used. Multi waveforms could be used as carrier
in frequency list mode while usually Sine is used.
3.15.1 Function Select:
Press
【
Sweep
】
key then soft key
〖
Type
〗
, and select ‘List’ to enter it’s
interface.
3.15.2 Sample Rate:
Press the soft key
〖
Sample
〗
to set the sampling rate of the frequency list.
Then loop specified frequency value of frequency list will be output according to setting sample