KEPCO BHK-MG VISA Driver Manual (Both Full and 1/2 Rack) - Manual (Page 12)

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BHK-MG-VISA 010906
2.2.10.8 As an example, if a five point list was to be entered, where all the values were the same except
the voltage, the list could be initially generated by specifying 5 points (which will all be identical), then set-
ting the MODE SELECT switch to EDIT and using the
< and > buttons to view and edit the voltage for
each point
2.2.10.9 Complex Pattern Generation. When the Destination is set to CURRENT or VOLTAGE, the pat-
tern generator window (Figure 13) can be used to produce a complex waveform. The complex output is
built by adding segments from each of the four basic waveform types: LEVEL, SINE, TRIANGLE or
SQUARE. Each time the GENERATE button is clicked, the waveform selected is generated using the num-
ber of points specified in the Points Window. Setting Destination set to CURRENT produces a current
waveform; a Destination of VOLTAGE produces a voltage waveform.
2.2.10.9.1 The SINE, TRIANGLE and SQUARE waveform types are defined by the following parameters ):
• Frequency (Hz) - Determines the dwell time of the waveform segment by 1/F (Hz) = Time (sec).
• Start Angle (deg) - Integer from 0 to 360 - The starting point for the waveform segment (e.g., to
start a sine wave at max positive excursion, the start angle = 90, to start at max negative excur-
sion, start angle = 270).
• End Angle (deg) - Integer from 0 to 360 - The ending point of the waveform segment. E.g., for a
negative half cycle of a sine wave, the start angle = 180, end angle = 360.
• Amplitude (p-p) - The peak to peak amplitude of the complete waveform segment. E.g., if you
want a positive sine wave half cycle (start angle = 0, end angle = 180) from 0 to 15V, the p-p
amplitude for that segment must be set to 30V.
• Waveform offset - The d-c level on which the waveform rides. If the negative excursion of the
waveform is used, the waveform offset must be sufficient to prevent the output from going below
zero, otherwise an error will result when Program RUN is attempted. E.g., if you want a full 15V
p-p sine wave cycle (start angle = 0, end angle = 360) from 10 to 25V, the p-p amplitude =15, and
the offset must be set to 17.5V (if the offset = 0 an error is produced when Program RUN is
attempted because the negative half cycle would require a negative voltage.
• Current (If VOLTAGE destination) or Voltage (if CURRENT destination) - establishes the output
current for a voltage waveform, or the output voltage for a current waveform.
2.2.10.9.2 When the segment parameters have been entered, pressing the GENERATE button adds the
number of points specified in the Points window to the list. Note that, particularly in the case of the SINE
and TRIANGLE waveforms, the accuracy of the waveshape is affected by the number of points, e.g., a tri-
angle wave produced using 100 points will be close to a true triangle wave, while one produced using 5
points will resemble stair-steps.
2.2.10.9.3 Pattern Generation, Example 1. To generate a single cycle of a voltage sine wave comprised
of one cycle with an amplitude of 1 volt peak to peak riding on a 28 volt level, a fixed current of 1 mA, and
a total duration of 1 second, enter the parameters listed in Table 3.