The Advanced Battery Test and Emulation application lets you create and import current-drain waveforms into the emulation to replicate real-life current drain scenarios that cell phone, laptop, or other battery types are subject to. Current drain waveforms can be created with a duration of up to 5.4 hours.
IMPORTANT: When using the N6705 DC Power Analyzer or the N6700 Modular Power System, you can only run dynamic current-drain waveforms on one of the installed power modules at a time. Single-output power supplies can run dynamic current-drain waveforms concurrently. However, all discharge operations must be configured ahead of time - before they are started.
Click the Edit waveform button to create a CD (constant-dwell) arbitrary current waveform. This action displays the Edit Waveforms dialog.
The edit waveform dialog appears as follows.
1. Waveform - in this example, the Ramp waveform has been inserted in the Build Waveform area.
2. New Waveform - indicates the area where the next waveform will be added in the Build Waveform area.
3. Insert Left, Insert Right buttons - insert a new waveform to the left or right of the highlighted waveform. Delete, Clear All buttons - delete the highlighted waveform, or clear all of the waveforms.
4. Waveform Configuration - select the waveform type to be configured in this area.
5. Export - exports the waveform file.
6. Settings - specifies the settings of the highlighted waveform.
7. Apply Sequence - applies the waveform sequence to the opened Profile.
8. Add Waveform - Adds the configured waveform to the sequence.
9. Cancel - cancels and exits the Edit Waveforms dialog.
The following steps create a discharge waveform.
Step 1. In the Waveform Configuration area in the center of the window, select the Ramp waveform.
Step 2. Fill in the settings information for the waveform. Each waveform has its own settings . Refer to Built-in Waveforms for information about additional waveforms.
Start Amplitude - the amplitude before the ramp starts.
End Amplitude - the amplitude after the ramp ends.
Delay - the delay after the trigger is received but before the step starts. The Start Amplitude applies during the delay.
Ramp Time - the time that the output ramps up.
End Time - the time that the output remains at the End Amplitude.
Repeat Count - the number of times the waveform repeats.
Step 3. Select Add Waveform to insert the waveform into the Build Waveform area.
Note that you can use the Insert Left and Insert Right buttons to position the new waveform to the left or the right of an existing waveform.
Step 4. Select Apply Sequence to apply the waveform to the opened Profile.
The following steps modify the ramp discharge waveform.
Step 1. In the Build Waveform area in the center of the window, select the Ramp waveform.
Highlight the waveform to modify.
Step 2. Update the settings information for the waveform.
Change the Repeat Count from 1 to 3.
Step 3. Select the Modify button to change the waveform.
Note that you can select the Delete buttons to delete any selected waveform.
Step 1. Click on the Export button to export the waveform file.
Step 2. Under Export File Details accept the default export path, or select Browse to specify a different location where you will save the file. Additionally, you can specify the item to append to the filename (date, time, or file number).
Step 3. Under Trace Data Optionsspecify the data separator (comma, semicolon, or tab).
Step 4. Select OK. After the waveform has been saved, a message will indicate that the CD Arb waveform data was successfully saved to the specified location.
You can load a CD ARB current waveform from a file that you had previously saved, or you can also import a current waveform that was created from a BV9200B 512-point list file. You cannot mix file types on an instrument with multiple channels.
CD Arb current waveforms are dwell-paced, with the same dwell time applied to every point in the waveform. The maximum number of points is 65,535. The minimum dwell time is 10.24 µs. The dwell time is calculated based on the number of points and the length of the waveform.
Conversely, the 512-point list waveform has a programmable dwell time that can be applied to each point on the list. The 512-point sequence type is only available for use on Keysight N6705-series DC Power Analyzers.
Step 1. Select in the settings area to load the CD Arb Waveform.
Step 2. Select in the settings area to preview the waveform. This lets you preview it before you run the profile.
Step 3. Select the Run button to run the Profile. The applied waveform will appear in the Voltage and Current display area when the profile is run.