104 Agilent InfiniiVision 5000 Series Oscilloscopes Programmer's Guide
5 Commands by Subsystem
*ESR (Standard Event Status Register)
(see page 658)
Query Syntax
*ESR?
The *ESR? query returns the contents of the Standard Event Status
Register. When you read the Event Status Register, the value returned is
the total bit weights of all of the bits that are high at the time you read
the byte. Reading the register clears the Event Status Register.
The following table shows bit weight, name, and condition for each bit.
Table 31 Standard Event Status Register (ESR)
Bit Name Description When Set (1 = High = True), Indicates:
7 PON Power On An OFF to ON transition has occurred.
6 URQ User Request A front-panel key has been pressed.
5 CME Command Error A command error has been detected.
4 EXE Execution Error An execution error has been detected.
3 DDE Device Dependent Error A device-dependent error has been detected.
2 QYE Query Error A query error has been detected.
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