Ceyear 1465 Series, Programming Manual

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2 Remote Control
2.1 Remote control basis
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Fig. 2.3 Hierarchical Structure of Status Register
The register classification is described as follows:
1) STB, SRE
Status Byte (STB) register and its associated mask register, Service Request Enable (SRE) register,
constitute the top-level register of the status reporting system. The STB saves the general working
status of the instrument by collecting low-level register information.
2) ESR, SCPI status register
STB receives the information of the following registers:

The value of Event Status Register (ESR) and Event Status Enable (ESE) mask register.

SCPI status registers include: STATus:OPERation and STATus:QUEStionable registers