Operation Overview
STATic/DYNAmic Functions
In CC mode two operation functions (STATic, DYNAmic) are available for selection.
STATic function checks the stability of output voltage from a power supply. In some
modules (single channel/module) there are two current levels (A or B) for static function.
Both A and B states use the same range. You can select A (CCL1 or CCH1) or B (CCL2 or
CCH2) through the A/B key on the module’s keypad or Mainframe keypad when level1 (A)
or level2 (B) changes. Slew rate determines the rate at which Load level changes from one
load level state to another. Figure 3-4 shows the current level of load module after pressing
A/B key.
CCL1:4A, CCL2:2A, CCL : 0.2A/μS, CCL : 0.08A/μS
Time
Current
rise slew rate
fall slew rate
State A
State B
4A
2A
10uS
25uS
press key "A/B"
Figure 3-4 Load Level after Pressing A/B Key
Dynamic load operation enables you to program two load levels (CCDL1, CCDL2), load
duration (CCDLT1, CCDLT2), and slew rate (CCDL , CCDL ). The loading level is
switched between those two load levels according to your specific setting during operation.
The dynamic load is commonly used to test the UUT’s performance under transient loading
condition. Figure 3-5 shows the current waveform of dynamic function.
CCDL1: 4A, CCDL2: 2A, CCDL :1A/μS, CCDL : 1A/μS, CCDLT1:10mS,
CCDLT2:10mS
3-5
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