AMETEK SLD Series - Manual (Page 21)

Sorensen SLD-Series DC Load Introduction
M540075-01 Rev C 1-9
• two 16-bit timers set current T
HIGH and T LOW duration and feed into the DFT
• the DFG sends analog signals to the Load Control Circuit
• one of Constant Current (CC), Constant Resistance (CR), or Constant Voltage (CV)
and one range level is selected, depending on which mode and range are operating
• the drive circuit controls the load current flow through power MOSFET
• the current sense Amplifier, built into the power MOSFET stage, feeds the load
current signal to 16-bit DAM.
• the voltage V-sensing circuit selects the Load input terminal or V-sense BNC input,
depending on the CONFIG key's V-sense ON/OFF setting, and feeds the voltage
signals to 16-bit DVM
The 16-bit voltage and current meter digital bus feeds back to the CPU circuitry; each SLD-
series load module can transfer to chassis through isolated serial circuitry.