Function A/B/C Waveform Generator; Set Func (A/B/C); Generating Wave Form - Extech Instruments DCP42 User Manual

6.2 Function A/B/C Waveform Generator

Preset 1 = A
Preset 2 = B
Preset 3 = C
FUNC (A/B/C) sets the duration (from 0 to 600 seconds) that the voltage generator remains ON
at the specified output voltage level before moving to another voltage level.

6.2.1 Set FUNC (A/B/C):

1. Enter the ΔV/Δt setting first (Refer to the Set Mode section 4.3.)
2. Turn the Voltage control knob to select the desired function and then turn the Current
control knob to set the time period (0 to 600 seconds) for the chosen voltage level.
3. Pressing the Current control knob toggles coarse and fine tuning of the time period.
4. To generate waveforms, the Func A/B/C button is used in conjunction with ΔV/Δt button (the
time period from one voltage level to another voltage level)
5. Using the above functions simultaneously, 3 reversible pairs (AB & BA, BC & CB, AC & CA) can
be used to generate waveforms.
Example 1: Pulse waveform with 3sec at 10V and 1sec at 5V.
Set A (Preset 1) = 5V, set B (Preset 2) = 10V
Set Func A = 1 second by turning the Current control knob
Func B = 3 seconds using the same procedure as above
Set Δt a-b = 0 , Set Δt b-a = 0

6.2.2 Generating Wave Form

To generate the waveform push SHIFT and then press the ΔV/Δt button
The waveform will repeat cyclically until the SHIFT button and then the ΔV/Δt button is pressed.
Example 2: Triangle waveform
Set A = 5V, B = 10 V
Set Δt a-b = 3 seconds, Set Δt b-a = 3 seconds
Set Func. A = 3 seconds, Set Func. B = 3 seconds
Note: The waveform generator can be operated via the remote programming software (with
waveform preview and graphical datalogging output presentation features). Details are provided
in the section 4 titled 'PC Software Program'.
Please verify that the Preset keys are both lit and that one is flashing. The flashing light will jump
from one to the other, A to B, then B to A. The waveform will repeat cyclically until SHIFT and
then ΔV/Δt are pressed again. Examples 3, 4, and 5 are provided in Appendix A later in this
guide.
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