Agilent Technologies 6812B, 6813B, 6811B manual 5. Remote Sense Connections

2 - Installation

♦Connect the phase 1 (1) sense terminals to the side of the load that connects to the corresponding output terminal.

♦Connect the Neutral (COM) sense terminal connector to the neutral side of the load.

♦Twist and shield all signal wires to and from the sense connectors.

The sense leads are part of the ac source’s feedback path and must be kept at a low resistance in order to maintain optimal performance. Connect the sense leads carefully so that they do not become open- circuited.

CAUTION: If the sense leads are left unconnected or become open during operation, the ac source will regulate at the output terminals, but with a 40% increase in output voltage over the programmed limit. The meter circuit cannot read back this increase in output voltage when the sense lead is disconnected.

Set the ALC command to EXT (external) to enable remote sensing. The ALC command is located under the Voltage key as explained in Chapter 4. Set the ALC command to INT (internal) to disable remote sensing.

NOTE: If you are using external relays to connect and disconnect the load and sense connections, do NOT permit the sense connections to open when remote sensing is enabled. First disable remote sensing, then open the sense and load connections.

01

!

SENSE

01 COM COM

LOAD

Figure 2-5. Remote Sense Connections

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