2-20 Model 2790 SourceMeter® Switch System User’s ManualUsing memory patternsFirmware revision levelMemory patterns are supported in Model 2790 units with firmware A04 and higher. Thefirmware revision level is displayed as part of the power-up cycle.OverviewMost Model 7751/7752/7753 tests follow the same basic procedure: select a source and setits level, configure the Model 2790 measurement, close the necessary relays, and take a read-ing. Memory Patterns simplify this process, allowing you to store combinations of multipleclosed channels, source settings, and DMM measurement configurations in nonvolatilememory. Up to 40 such Memory Patterns, designated M1 through M40, can be stored. Thereis also memory pattern M0, which is defined as an “all-open” pattern. Recalling M0 opensall channels and resets all sources to their factory default values. Similar to closing one 7702channel and taking a reading, you can recall an individual Memory Pattern to close multiplechannels and take a reading. More importantly, you can include Memory Patterns in a scanlist and cause the Model 2790 to automatically scan through the specified memory locations.As each memory pattern is scanned, the sources and DMM are configured appropriately, thespecified group of channels is closed, and a reading is taken. Reading limits can also beassigned to each memory pattern so that during a scan the readings will automatically beinspected for PASS/FAIL conditions. Digital outputs corresponding to these conditions arealso available.NOTE Memory patterns can be used only with the following functions: DC volts, 2-wireohms, and 4-wire ohms.Front panel operationMemory patterns cannot be defined from the front panel, but they can be recalled oncedefined by remote commands (see below). To recall defined memory patterns from thefront panel:1. Press CLOSE.2. Use the RANGE and keys to select CLOSE: MEMORY, then pressENTER.3. Use , , , and to select the memory pattern number (1-40), then pressENTER.
