FLUKE 282-U User Manual for the Fluke 282-U Arbitrary Waveform Generator and Manager, 40 MS/s, 2 Channel

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281, 282, 284

Users Manual

Frequency or period can now only be set in terms of the clock frequency. Frequency and

period entries are made directly from the numeric keypad or by using the rotary control in

the usual way.

Amplitude

Pressing the AMPLitude key with an arbitrary waveform selected calls the AMPLITUDE

screen:

AMPLITUDE:

+20·0 Vpp

Vpp

load:hiZ

This differs from the AMPLITUDE screen for standard waveforms in that amplitude can

now only be entered in volts peak-to-peak.

Note that the peak-to-peak amplitude set on this screen will only be output if the arbitrary

waveform has addresses with values which reach -2048 and +2047; if the maximum

value range is -1024 to +1023 for example then the output range with the instrument set

to 20 V p-p will only be 10 V p-p.

Sync Out Settings with Arbitrary Waveforms

The default setting for sync out when arbitrary waveforms are selected is

waveform sync; this is a pulse that starts coincident with the first point of the

waveform and is a few points wide.

If a waveform sequence has been selected then sync out defaults to sequence sync;

this is a waveform which goes low during the last cycle of the last waveform in a

sequence and is high at all other times. When sequence is used in triggered burst mode

the burst count is a count of the number of complete sequences.

Waveform Hold in Arbitrary Mode

Arbitrary waveforms can be paused and restarted on any channel by using the front panel

MAN HOLD key or a signal applied to the rear panel HOLD IN socket.

On multi-channel instruments the channels which are to be held by the MAN HOLD key

or HOLD IN socket must first be enabled using the ARB HOLD INPUT screen,

accessed by pressing the HOLD key:

ARB HOLD INPUT:

status: no hold

mode: disabled

Each channel is selected in turn using the channel SETUP keys and set using the

mode soft-key; the mode changes between disabled and enabled with alternate

key presses.

9-16

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FLUKE 282-U Arbitrary Waveform Generator and Manager, 40 MS/s, 2 Channel