Sequoia / Tahoe Series User Manual California Instruments
254 M447352-01 REV-A
remain at the last list value at the completion of the list. STEP, PULSe, and LIST modes are not allowed
to be mixed among functions.
IMMediate level
FIXED mode
Triggers ignored,
output always set to
immediate command
levels.
TRIGered level
IMMediate level
STEP mode
At trigger, the triggered
level becomes the new
immediate level.
TRIGered level
IMMediate level
PULSE mode
At trigger, the triggered
level is active during the
pulse width portion of
the pulse waveform.
IMMediate level
LIST mode
Trigger
Applied
List
Complete
step0
step 1
step 2
At trigger, the list starts.
When list completes,
output returns to
immediate level.
Figure 8-1: Output Transient Modes
8.1.1.1 Step Transients
Step transients specify an alternate or triggered voltage level that the AC source will apply to the output
when it receives a trigger. Because the default transient voltage level is zero volts, a triggered voltage
level must be entered before a trigger to the power source can change the output amplitude. Step
transients could only be programmed through the remote digital interface using the SCPI commands or
the Sequoia Virtual Panels GUI; refer to the Sequoia Series Programming Manual M447353-01, Tahoe
Series Programming Manual P/N M445374-01 or refer to AMETEK PPD website,
www.programmablepower.com, to download the latest version.
8.1.1.2 Pulse Transients
Pulse transients program the output to a specified value for a predetermined amount of time. At the end
of the Pulse transient, the output voltage returns to its previous value. Parameters required to set up a
Pulse transient include the pulse count, pulse period, and pulse duty cycle. An example of a Pulse transient
is shown in Figure 8-2. In this case, the count is 4, the pulse period is 16.6 ms (for 60 Hz) and the duty
cycle is 33%. Pulse transients could only be programmed through the remote digital interface using SCPI
commands or the Sequoia Virtual Panels GUI; refer to the Sequoia Series Programming Manual
M447353-01, Tahoe Series Programming Manual P/N M445374-01 or refer to AMETEK PPD website,
www.programmablepower.com, to download the latest version.
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