BNC 645 - Manual (Page 34)

34
4.2 Square Wave
A square wave consists of instantaneous transitions between two voltage
levels. The duty cycle of a square wave represents the amount of time in
each cycle during which the wave is at the high level (assuming that the
waveform is not inverted):
DutyCycle = (Time Interval at High Level) / Period x 100%
How to generate a square wave
1. Press the Square button to select the square wave function.
2. Refer to Chapter 3 for configuring common parameters, including
frequency/period, amplitude and dc offset voltage.
3. Press the softkey under DutyCycle for configuring the value.
4. Use the knob with the cursor keys to change the value, or
5. Use the numeric keypad to enter a desired value and then press
the softkey under % to finish the entry or the softkey under Cancel
to cancel the changes.
6. To view all the waveform parameters, press the Graph button.
Figure 4-2
Remote interface operation
APPLy:SQUare [<frequency>[,<amplitude>[,<offset>]]]
or
FUNCtion {SQUare}
FREQuency {<frequency>︱MINimum︱MAXimum}
VOLTage {<amplitude>︱MINimum︱MAXimum }
VOLTage:OFFSet {<offset>︱MINimum︱MAXimum }
FUNCtion:SQUare:DCYCle {<percent>︱MINimum︱MAXimum }
Notes
• The default value for duty cycle is 50% and will be restored after
power off or a remote interface reset as the setting is stored in