Programmable AC Source 61705 User’s Manual
2-4
Figure 2-4 Output Terminal Connection
2.5 Remote Sense Connection
The remote sense function of the AC Source monitors the voltage at the load instead at the
output terminal of the AC Source. It ensures the delivery of accurate voltage as programmed
at the load by automatically compensating the output voltage drop over the connecting cable.
Connect the sensing leads as shown in Figure 2-5. Because the sensing leads carry only a
few milliamperes, the wires for sensing are much lighter than the load leads. The sensing
leads are part of the feedback path of the AC Source, so they must be kept at a low resistance
in order to maintain the best performance. Connect the sensing leads carefully so that they
will not be open-circuited. If the sensing leads are left unconnected or become open-
circuited during operation, the AC Source will disable the output. The sensing leads must be
a twisted pair to minimize the pickup of external noise. The sensing leads need to be
connected to the load as close as possible.
Φ1/L Φ2/L Φ3/L N PE (Earth Ground)
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