Fluke DDS Function Generator 271 - Manual (Page 28)

271
Getting Started Manual
Generating a Triggered Burst
In this exercise you will use the internal trigger generator
to initiate a burst of 500 cycles of a 2 kHz tone twice every
second. The period of the internal trigger generator is thus
500 ms.
Press RECALL, 0, ENTER to reset to the factory defaults.
Then press EDIT and TRIG. The lamp next to the TRIG
key should flash and the display should show:
SOURCE=EXT
TGEN=1.00ms 1.000kHz
BURST COUNT=0001
PHASE=+000° (+000°)
Change the settings to:
SOURCE=TGEN [FREE]
TGEN=500.ms 2.000 Hz
BURST COUNT=0500
PHASE=+000° (+000°)
The word FREE against the SOURCE parameter
indicates that the internal trigger generator has not already
been assigned to some other function. If it had been, that
function would be shown in place of the word FREE.
Press ENTER, turn the output on and set the frequency on
the main menu to 2 kHz, which at that point will be a
continuous tone.
FREQ=2.000000kHz
VhiZ=+20.0 Vpp 50
Ω
DC=+0.00mV (+0.00mV)
SYM=50.0% (50.0%)
Press TRIG to initiate the triggered burst mode.
To synchronize an oscilloscope to the trigger generator
(rather than to the burst waveform itself), connect the rear
panel TRIG/SWEEP OUT socket to the oscilloscope's
trigger input.
Again, by changing the trigger source to
TRIG SRC=MAN/REMOTE
, you can initiate tone bursts by
pressing the MAN/SYNC key.
There are similar modes which use the internal trigger
generator as the source of trigger signals, and there are
gated (i.e. level-sensitive) modes which correspond to the
edge-sensitive triggered modes. The Users Manual
contains detailed information on these modes.
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