User manual

User Manual – Rev B FCS Series II
ab cutoff f ncy will n flecte surem en using rnal
measurement reference, this may
4.6 Harmonic Analy
ove this reque ot be re
account for discrepancies in readings.
d in the mea ents. Wh an exte
sis
The FCS Series II controller with –ADV option offers advanced power analyzer measurement
capabilities. These functions may be accessed from the Meas screen. The phase for which the
analy or wavef quisition e may be d using th se key when in three-
phase mode.
The controller’s power analyzer performs fast Fourier transformation (FFT) on both voltage and
current on each available phase. The resulting frequency spectrum can be obtained over the
bus only.
The FCS Series II provides this capability only if the –ADV option is present.
4.7 Transient Programming
sis orm ac is don selecte e Pha
4.7.1 Introduction
Transient programming provides a precise timing control over output voltage and frequency
changes. This mode of operation can be used to test a product for susceptibility to common AC
line conditions such as surges, sags, brownouts and spikes. By combining transient
programming with custom waveforms, virtually any AC condition can be simulated on the output
ing
EEE-488, RS232C, LAN or USB bus. On power up, the AC source
always reverts to the maximum slew rate for both voltage and frequency.
4.7.2 Using Transient Modes
of the AC source.
The default voltage mode is FIXED which means the output voltage is constant and remains at
the level set by the user. Changes made to the output voltage made from the PROGRAM menu
take effect immediately. In front panel operation mode, the voltage and frequency slew rates
(rate of change) are always at their maximum of 2E5 V/s and 2E5 Hz/s. Slew rate programm
is only possible over the I
The voltage can be programmed in the following transient operating modes:
STEP Causes the output to permanently change to its triggered value.
PULSE Causes the output to change to its triggered value for a specific time, as
dete
LIST Causes the output to sequence through a number of values, as determined by
entered in the List menu.
FIXED Disables transient operation for the selected function.
4.7.3 Step Transients
rmined by the Pulse menu parameters.
points
Step transients let you 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 z
volts, you must first enter a triggered voltage before you can trigger the AC source to change the
output amplitude. Step transients can only be programmed through the bus, not the front panel.
Refer to the SCPI Programming Manual for more information about programming Step
transients and triggers.
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California Instruments 81