Fluke 271 Generating a Triggered Burst, FREQ=2.000000kHz VhiZ=+20.0 Vpp 50Ω DC=+0.00mV +0.00mV

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:

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 50Ω

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.

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

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.

18