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PHU Series User Manual



               Local Sense
               Local sense is only recommended when the voltage drop is of no
               consequence or for load-current applications. By default, the sense
               plug is already configured to local sensing.

               Local Sense        PHU                  Load
               Connection
                                  Output              Input
                                  Output              Input



                                       -S
                                  Remote   Sense  NC
                                      NC
                                       +S


               Remote Sense
               Remote sense is used to compensate for the voltage drop seen across
               load cables due to the resistance inherent in the load cables.  The
               remote sense terminals are connected to the load terminals of the
               DUT to determine the voltage drop across the load cables.
              Model Range                   Maximum Compensation Voltage (V)
              PHU 80-170/ 80-340/ 80-510    4 V
              PHU 200-70/ 200-140/ 200-210   10 V
              PHU 500-30/ 500-60/ 500-90    25 V
              PHU 750-20/ 750-40/ 750-60    37.5 V
              PHU 1000-15/ 1000-30/ 1000-45  50 V
              PHU 1500-10/ 1500-20/ 1500-30  75 V
               Load cables should be chosen with a voltage drop less than the
               compensation voltage.
               Do NOT bundle the sense wire-pair together with the load wires;
               keep the load wires and sense wires separate. Keep the sense wire-
               pair as short as possible and twist or bundle it to reduce lead
               inductance and noise pickup.


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