Sequoia / Tahoe Series User Manual          California Instruments 
 
M447352-01 REV-A                                        37 
Low Voltage Range  Maximum voltage at 905 Hz is 159 Vrms 
Maximum frequency at 166 Vrms is 875 Hz 
See Figure 2-6 
-XVC 444 Voltage Range  Maximum voltage at 905 Hz is 425.3 Vrms 
Maximum frequency at 444 Vrms is 875 Hz. 
See Figure 2-6 
-XVC 555 Voltage Range  Maximum voltage at 905 Hz is 531.6 Vrms 
Maximum frequency at 555 Vrms is 875 Hz . 
See Figure 2-6 
-XVC 666 Voltage Range  Maximum voltage at 905 Hz is 638 Vrms 
Maximum frequency at 666 Vrms is 875 Hz . 
See Figure 2-6 
-XVC 721 Voltage Range  Maximum voltage at 905 Hz is 690.6 Vrms 
Maximum frequency at 666 Vrms is 875 Hz . 
See Figure 2-6 
Note: If the voltage or frequency settings shown here are exceeded for any length of time (> 1 sec), the 
Sequoia/Tahoe may shut down generating an over temperature fault to protect itself. 
 
Figure 2-6: Output voltage limit characteristics -HF option