Ametek SEQUOIA Series - Page 286

Sequoia / Tahoe Series User Manual California Instruments
M447352-01 REV-A 263
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 8-15: Output Transient Modes
8.2.1.1 Step Transients
Step transients specify an alternate or triggered current level that the AC source will apply to the output
when it receives a trigger. Because the default transient current level is zero amps, a triggered current
level must be entered before a trigger to the power source could change the output current 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, or refer
to AMETEK PPD website, www.programmablepower.com, to download latest version.
8.2.1.2 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 current 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 8-16. 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, refer to AMETEK PPD website, www.programmablepower.com, to download latest version.