BNC 645 - Manual (Page 57)

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Ext Trig / FSK / Burst connector because it shares the same
connector with Ext Trig for receiving the external trigger signal.
• With manual trigger, the waveform generator outputs a pulse,
with pulse width > 1 μs, at the Trig Out connector at the beginning
of each sweep.
How to set up frequency sweep
1. Press one of the following function buttons to choose your
waveform for sweeping: Sine, Square, Ramp, Arb. Specify all the
necessary waveform parameters for the waveform as described in
Section 4.1, 4.2, 4.3 and 4.6.
Figure 4-14
2. Press the Sweep button to enable or disable the sweep mode. To
enable the sweep mode, make sure the Sweep button is lit.
3. Press the softkey under Linear/Log to toggle between the linear or
logarithmic mode.
4. To specify the start frequency, press the softkey under Start/Cntr
to toggle. Make sure both Start and Stop are highlighted. Use the
numeric keypad or the knob with cursor keys to change the value.
Follow the same step to specify the stop frequency under the
softkey Stop/Span.
5. To specify the center frequency, press the softkey under
Start/Cntr to toggle. Make sure both Cntr and Span are
highlighted. Use the numeric keypad or the knob with cursor keys
to change the value. Follow the same step to specify the frequency
span under the softkey Stop/Span.
6. To specify a desired sweep time, press the softkey under Sweep
Time. Use the numeric keypad or the knob with cursor keys to
change the value.
7. To configure the marker, press the softkey under Mkr to toggle
between Freq and OFF. If Freq is selected, Use the numeric
keypad or the knob with cursor keys to set the marker frequency.
8. To configure the trigger setting, press the softkey under Trig