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AMETEK SLM Series RevC User Manual

Page 18

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Introduction, Features, Specifications

Sorensen SLM-Series DC Load

1-6

M540071-01 Rev C

Dynamic Waveform Definition:

There are six parameters to generate a dynamic waveform or pulse waveform: High/Low load
levels, Rise/Fall slew rates, and T

HIGH

/T

LOW

durations. The SLM-series DC electronic load will

sink current from the power source, proportional to the dynamic waveform. The dynamic
waveform definition is shown in Figure 1-10.

The formula to define the period of dynamic waveform is:

Dynamic frequency = 1 /(T

HIGH

+ T

LOW

)

Duty cycle = T

HIGH

/ (T

HIGH

+ T

LOW

)


Figure 1-10 Dynamic Waveform



The load current level and load status can be set by any of three ways:

• on the front panel of each load module,
• through the mainframe store/recall memory, or
• with GPIB/RS-232 commands

The load input voltage and load current can be read back to the computer through GPIB or RS-232 bus.
(See the SLM Mainframe Operation Manual for a description of the mainframe store/recall and
GPIB/RS-232 remote operation).