Keysight Technologies E4360 Series User Manual

Also see for E4360 Series: Service guide Service guide

Contents

Using the Solar Array Simulator 4Series E4360 User’s Guide 65The resolution setting applies to this channel whenever a curve isprogrammed in SAS mode or a Table is loaded in Table mode. The largetable (4096 points) will give a smoother I-V curve but takes much longerto update. The small table (256 points) is faster to update. This modeselection applies to both SAS and Table modes, and also when usingcurve lists.The smaller 256-point table mode is particularly useful for curve lists,since it allows for a faster dwell to be specified (tens of millisecondsinstead of hundreds of milliseconds). However, the current resolution ofa 256-point table is much coarser (16x) than a 4096-point table. The256-point table may not be suitable in low short-circuit currentapplications. Due to the coarseness of the 256-point table, a low Iscapplication may result in a DAC table that may not have enough pointsto approximate the shape of the typical I-V curve illustrated earlier.It should be noted that not all of the points in the DAC table areavailable for approximating the I-V curve. Because of circuitrequirements, portions of the DAC table are reserved for internal use.The number of points available for curve approximation is about 3600points for high resolution mode and 230 points for low resolution mode.For all practical purposes however, the entire DAC table at its respectiveresolution is used in SAS mode.The following table describes the performance characteristics of the tworesolution settings:High Resolution/large DACtable:Low Resolution/small DAC table:• 3600 points typical.• 12-bit current programming .• 350ms table update rate.• 230 points typical.• 8-bit current programming .• 30ms table update rate.Enable SAS modeTo enable SAS mode:Front Panel: SCPI Command:Select Output\Mode.Check that SAS is selected.To check the mode setting send:CURR:MODE? (@1)To set the mode to SAS send:CURR:MODE SAS,@1)The front panel display will indicate that SAS mode is in effect.