Specifications

661xC and 663xB: Output Transition Time
Question: How fast can the 661xC and 663xB Series supplies respond to a command and generate a full scale
output?
Answer: The output transition time is comprised of two parts: command processing time (before the output starts to
change voltage), and the output programming response time (essentially the time it takes the output to go from 10%
of the voltage to 90%). Adding both figures will give a good estimate of the output transition time.
For both series of products, the command processing time has been reduced to <4ms.
The 663xB Series products have two operating modes, with a fast/normal mode switch on the rear panel. In the fast
mode, the output can slew from 10% to 90% within 400 us. In the normal mode the output slews in 2 ms. Note, use
of the fast mode will degrade noise performance somewhat (from 3 mV to 10 mV on the 6632B).
The 661xC models do not offer a fast/normal mode switch, however their output programming response time is
approximately 2 ms.