1 Getting Started
52 Keysight E364xA User’s and Service Guide
Stability
Using remote sensing under certain combinations of load lead lengths and large
load capacitances may cause your application to form a filter, which becomes
part of the voltage feedback loop. The extra phase shift created by this filter can
degrade the power supply’s stability, resulting in poor transient response or loop
instability. In severe cases, it may cause oscillations.
To minimize this possibility, keep the load leads as short as possible and twist
them together. As the sense leads are part of the power supply’s programming
feedback loop, accidental open-connections of sense or load leads during remote
sensing operation have various unwanted effects. Provide secure and permanent
connections.
CV regulation
The voltage load regulation specification in Chapter 7 applies at the output
terminals of the power supply. When remote sensing, add 5 mV to this
specification for each 1 V drop between the positive sensing point and (+) output
terminal due to the change in load current. Because the sense leads are part of
the power supply’s feedback path, keep the resistance of the sense leads at or
below 0.5 Ω per lead to maintain the above specified performance.
Output rating
The rated output voltage and current specifications in Chapter 7 apply at the
output terminals of the power supply. With remote sensing, any voltage dropped
in the load leads must be added to the load voltage to calculate the maximum
output voltage. The performance specifications are not guaranteed when the
maximum output voltage is exceeded. If the excessive demand on the power
supply forces the power supply to lose regulation, the Unreg annunciator will turn
on to indicate that the output is unregulated.
During remote sensing setup, it is strongly recommended to power off (by
pressing the power ON/OFF button) the power supply to avoid undesirable
damage to the load or the power supply.
To Next Page
Loading...
Need help?
General
