TFG2900A Series Function/Arbitrary Waveform Generator Users’ Guide
Suin Instruments Co., Ltd
50
more sweep time results in more sweep frequency points and finer sweep step, vice visa.
3.14.7 Hold Time:
Press
〖
Hold Time
〗
soft key and use the knob or numeric keypad to enter the
desired hold time. The hold time specifies the length of time to remain at the stop frequency.
3.14.8 Return Time:
Press
〖
Return Time
〗
soft key and use the knob or numeric keypad to enter
the desired return time. The return time specifies the length of time to return from the stop
frequency to the start frequency.
3.14.9 Interval Time:
Press
〖
Interval Time
〗
soft key and use the knob or numeric keypad to enter
the desired interval time. The interval time specifies the time from one sweep to next sweep.
3.14.10 Trigger Source:
Press
〖
Source
〗
soft key. If internal mode is selected, the waveform
generator takes internal source and trigger sweep repeat running. When manual mode selected, the
waveform generator outputs one sweep each time you press
〖
Manual Trig
〗
soft key. When
External selected, generator takes external source, input external trigger signal from ‘Trig In/Out’
port in rear panel. Each effective trigger clock edge will trigger once sweep, the period of trigger
signal should greater than the total time of one sweep, as below formula shown:
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.
