Keithley 2790, Reference Manual

Page: 324 / 568

Model 2790 SourceMeter
®
Switch System Reference Manual 11-19
Event registers
As Figure 11-1 shows, each status register set has an event register. When an event occurs,
the appropriate event register bit sets to 1. The bit remains latched to 1 until the register is
reset. Reading an event register clears the bits of that register. *CLS resets all four event
registers.
The commands to read the event registers are listed in Table 11-4 . For details on reading
registers, see “Reading registers,” page 11-6 .
Table 11-4
Event register commands
Command Description
*ESR? Read Standard Event Status Register.
STATus:OPERation:[:EVENt]? Read Operation Event Register.
STATus:MEASurement:[:EVENt]? Read Measurement Event Register.
STATus:QUEStionable:[:EVENt]? Read Questionable Event Register.
Note: Power-up and *CLS resets all bits of all event registers to 0. STATus:PRESet has no effect.