Pacific Power Source UPC-32, Руководство по эксплуатации

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SECTION 4 OPERATION
56
4.6.2.1 EDIT WAVEFORM (continued)
NUMBER : Waveforms number 2-16 may be edited. Waveform 1 is always a sine wave
PHASE ANGLE : The STARTING AND ENDING PHASE ANGLE determine what portion of the
waveform is being edited.
NOTE: UPC-12 and UPC-32 waveforms have 1024 time steps, so the actual angle increment is
0.352 degrees (360/1024). Phase angle entries are rounded to the actual increment (85 degrees
displays as 85.078). The precision of the display is 3 decimal places to more accurately depict the
actual waveform data. The example below illustrates this.
VOLTAGE IN PERCENT All points on the waveform between the starting and ending phase angle
defined above will change to this new voltage. Enter the voltage value as a percent, relative to the
peak of the waveform, either positive or negative.
The UPC will attempt to generate the selected waveform at the rms voltage programmed. Because of the
difference in the rms voltage content of various waveforms, it may not be able to reproduce the waveform at
the voltage desired. If the waveform is peak-voltage-limiting, then selecting transformer coupled output with
a higher ratio may solve this problem.
Basic sinusoidal waveforms with large dropouts or spikes will change the rms content of the waveform.
Depending on the TRANSIENT AUTO-RMS setting (
4.5.2 ), the UPC may cause the peak voltage to change,
in order to keep the correct rms voltage. If you wish to keep the basic sine wave at the same amplitude and
add a large dropout, you must program a proportionally lower rms voltage or DISABLE the RMS calculation
in the TRANSIENT AUTO-RMS display. If you wish to keep the basic sine wave at the same amplitude and
add a large spike, you must also allow for the higher peak voltage.
EXAMPLE: To put a 10% spike on top of a sine wave, first copy waveform 1 to waveform 2 at a 90%
amplitude scale factor to allow 10% more voltage at the peak of the sine wave to accommodate the spike..
See the example in (
4.6.2.2 ), Copy Waveform.
From the WAVEFORM SETUP display, press 1, to enter EDIT WAVEFORM.
EDIT WAVEFORM: NUMBER =2 RANGE=2-16
STARTING PHASE ANGLE =0 0-359.9°
ENDING PHASE ANGLE =0 0-359.9°
VOLTAGE IN PERCENT =-100 (+/-)0-100%
Press 2, ENTER, to select waveform 2.
EDIT WAVEFORM: NUMBER=2 RANGE=2-16
STARTING PHASE ANGLE =0 0-359.9°
ENDING PHASE ANGLE =0 0-359.9°
VOLTAGE IN PERCENT =100 (+/-)0-100%
Press 85, ENTER, to select the start angle.
EDIT WAVEFORM: NUMBER=2 RANGE=2-16
STARTING PHASE ANGLE =85 0-359.9°
ENDING PHASE ANGLE =0 0-359.9°
VOLTAGE IN PERCENT =100 (+/-)0-100%
Press 95, ENTER, to select the end angle.