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2074
User Manual
Arbitrary/Sequence
4-12
the accuracy of the output will deteriorate completely.
The Frequency control lets you program the output frequency of the
selected waveform shape. The frequency parameter may be
modified when the LED illuminates. You can use the dial, keyboard,
or the [↑] [↓} keys to adjust the readout to the required setting. After
you modify the reading, press Execute to update the 2074 with the
new reading.
Channel
The channel group defines which of the channels is currently being
programmed. Since all four channels have the same controls, it
would have been very crowded to include separate buttons for each
channel and therefore, when you intend to program channel 1
waveforms and parameters, click on the CH1 button. Likewise if you
intend to program channel 4 waveforms and parameters, click on
the CH4 button.
The Arbitrary & Sequence panel, as shown in Figure 4-7, is invoked
by pressing the Arb/Seq button on the Panels bar. Note that if you
invoke the Arbitrary & Sequence Panel from the Panels menu, the
2074 will not change its output type. On the other hand, if you select
the arbitrary, or the sequenced options from the Main Panel, the
2074 will immediately change its output to the selected waveform
type. The functional groups in the Arbitrary Waveforms Panel are
described below.
Parameters
The Parameters group contains three parameters for each channel:
Amplitude, Offset and Segment. Actually, the amplitude and offset
values exhibited in this group are exactly the same as in the Main
Panel, so every time you change amplitude and offset in the
Parameters group, the other panels are updated automatically. The
segment parameter provides access to the active segment for each
channel. By selecting a segment as active, the sync pulse is
attached to this specific segment number.
To access the required parameter, click on the parameter name.
The LED next to the required parameter turns on. The value that is
associated with the lit LED is displayed on the digital display. You
can use the dial, keyboard, or the [↑] [↓} keys to adjust the readout
to the required setting. After you modify the reading, press Execute
to update the 2074 with the new reading.
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