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default setting is "Internal".
Internal Trigger
When internal trigger is selected, the generator can only output N cycle burst and the burst
frequency is determined by the "Burst Period".
External Trigger
When external trigger is selected, the generator can output N cycle, infinite or gated burst. The
generator receives the trigger signal from the[FSK/Trig/Sync/Extmod] connector on the rear
panel. A burst will be generated once the connector receives a TTL pulse with specified slope or
polarity.
To set the extrenal trigger slope, press Slope softkey to select "Rising" or "Falling" and the default
is "Rising".
Manual trigger
When manual trigger is selected, the generator can output N cycle or infinite burst. A burst will be
generated from the corresponding channel (if currently turned on) Once the Trigger button at the
front panel is pressed. If the corresponding channel is not turned on, the trigger will be ignored.
7.7 GatePolarity
Gate polarity is only available in gated burst mode. The generator will output burst when the gated
signalfrom the[FSK/Trig/Sync/Extmod] connector on the rear panel is "High Level" or "Low
Level".
When Burst is enabled, press Type softkey to select "Gate" and press Polarity softkeyto select
"Positive" or "Negative". The default is "Positive".
7.8 Trigger Output Edge
In burst mode, when the trigger source is "Internal" or "Manual", the generator would output a
TTL-compatible signal with specified edge from the[FSK/Trig/Sync/Extmod] connector on the
rear panel.
Internal trigger: The generator outputs a square waveform with variable duty cycle (related
to the carrier period and number of cycles) from the [FSK/Trig/Sync/Extmod] connector at
the start of the burst.
Manual trigger: The generator outputs a pulse from the [FSK/Trig/Sync/Extmod] connector
at the start of the burst.
External Trigger: The [FSK/Trig/Sync/Extmod] connector is used as the input terminal of
external trigger signal and has no trigger output.
User Manual
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