Tenma 72-3555 - Page 46

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Impulse Train Phase
• Impulse Train phase is the start phase of impulse train and ranges from -360° to
360°. It defaults to 0°.
• To modify the parameter, enter the impulse train type interface, then use the
multipurpose knob and direction buttons, or press Params→StartPhase to
complete the setup.
• For sine, square, ramp and pulse waveforms, 0° represents the point at which the
waveform crosses 0V (or DC offset) in a forward direction.
• For arbitrary waveform, 0° is the rst point of waveform downloaded into the
memory.
• Start phase has no impact on noise waveform.
Impulse Train Period
• Impulse Train period is applicable for N-Cycle mode only, which is dened as the
amount of time from the start of one impulse train to the start of next one.
• When external or manual trigger source is selected, Impulse Train Period won’t
show on the parameter list.
• Impulse Train period ranges from 1μs to 500s
and defaults at 10ms.
• To modify the parameter, set the impulse train
type to N-Cycle rst, then use the multipurpose
knob and direction buttons together or
press Params→BstPeriod to complete the
modication.
Impulse Train Count
• In N-Cycle mode, impulse train count is used to specify the number of waveform
cycles. It can be set from 1 to 50,000 cycles. The default is 1.
• To modify the parameter, set impulse train type to “N-Cycle” rst, and then use
the multipurpose knob and direction buttons or press Params→Cycles MHz to
complete the setup.
• Cycles ≤ Burst Period x Waveform Frequency
• If Cycle count goes beyond the limit, the Generator will automatically increase
impulse train period so as to adapt to the specied impulse train count (however
waveform frequency stays unchanged.)
Selecting Trigger Source
• The Generator will output an impulse train once it receives a trigger signal; after
that, it stops and waits for the next trigger.
• The impulse train trigger source can be internal, external or manual. To modify
the parameter, enter the impulse train type interface rst, and then use the
multipurpose knob and direction buttons or press Params→TrigSrc to complete
the setup.
• When the internal triggering is selected, the impulse train is output at a specied
frequency determined by impulse train period. The Generator can output an
“N-Cycle” or an “Innite” type of impulse train.