AMETEK SLH Series RevC - Manual (Page 24)

Introduction Sorensen SLH-Series DC High Power Electronic Load
• The front panel of the SLH-Series provides the load current level and the load status.
• The following three pairs of parameters constitute the wide range pulse generator, and
can be used to test the power supply (Device Under Test - DUT):
◦ Two 12-bit D/A converters receive digital data of load current, and transfer as an
analog signal.
◦ Two 8-bit D/A converters control the load current slew rate.
◦ Two 16-bit trimmers set the T
HIGH and T LOW durations
• The Constant Current ( CC ), Constant Resistance ( CR ), and Constant Voltage ( CV )
control circuitry. Range circuitry is selected by existing operating mode and range.
• The drive circuit controls the load current flow through power MOSFET, proportional to
the analog control signal. The Short ON/OFF signal through short drive circuit turns the
Power MOSFET fully ON.
• The current sense Amplifier feeds the load current signal including the short circuit
current signal, to the digital meter (DM) and isolated amplifier to Imonitor BNC output.
• The voltage Auto-sensing circuit selects the Load input terminal or Vsense BNC input
depending on whether the Vsense cable is connected or not. The Auto-ranged, high
accuracy 4 1/2 digit (five-character) voltage meter indicates the input voltage.
• The 4 1/2-digit (five-character) voltage meter and 4 1/2-digit (five-character) current
meter digital bus is connected to CPU circuitry.
1-10 M540074-01 Rev C