Supplemental Functions; Δv/Δt Function; Setting The Dc Generator Voltage Level; Setting The Δt - Extech Instruments DPC42 User Manual

6. Supplemental Functions
6.1 ΔV/Δt Function
There are 3 DC voltage generator settings (A, B, and C).
Preset 1 = A
Preset 2 = B
Preset 3 = C
ΔV a‐b (from voltage level A to voltage level B).
Δt a‐b (time in seconds from voltage level A to level B, this transit time is adjustable from 0 to 20
seconds)
6.1.2 Setting the DC generator voltage level
There are 3 generator voltage levels presets (A, B, and C).
Press the Preset button 1, 2 and 3 and adjust the voltage to the desired value.
6.1.2 Setting the Δt
There are 6 sets of Δt available , turning the Voltage control knob cycles through the following
sequence: AB →BA →AC →CA →BC →CB
Using the AB setting as an example, turn the Voltage control knob until A‐b appears on the
voltmeter display and then turn the Current control knob to set to desired transit time Δt (5
seconds for example).
6.1.3 Generating Ramp‐Up or Ramp‐Down DC output cycles
Ramp up generator example: Set A = 5V; B = 10V; Δt a‐b = 5 seconds
1. Connect a suitable load to the output and turn ON the output by pressing the "OUTPUT
ON/OFF" button; note the output LED indicator.
2. Push "Preset 1" and note the output voltage of 5V. Press "Preset 2" and note that the
output voltage rises to 10V in 5 seconds showing a ramp up voltage (the output will
remain at 10V).
3. Pressing "Preset 1" will now generate a ramp down voltage from 10V to 5V in 5 seconds
and will remain at the 5V level.
Note: The final output voltage level will be the last voltage level generated.
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