Agilent Technologies E3632A manual Stability, Remote Voltage Sensing Connections

Chapter 3 Front-Panel Operation

Remote Voltage Sensing

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.

	Remote Voltage Sensing Connections
	Remote voltage sensing requires connecting the load leads from output
	terminals to the load and connecting the sense leads from sense terminals to
	the load as shown below. Observe polarity when connecting the sensing leads
	to the load.
	Notice that the metal shorting bars should be removed from the output and
	sense terminals for remote voltage sensing connections.
N o t e	For local voltage sensing connections, the sense leads must be connected to
	the output terminals.

3

Figure 3-2. Remote Voltage Sensing Connections

49