EXFO FLS-2200, Руководство пользователя

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Using Your Broadband Source in an Automated Test Environment
Broadband Source
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Standard Status Data Structure
Standard Status Data Structure
Each device that is physically connected to the GPIB bus has four status
registers with a structure complying with the IEEE 488.2 standard. These
registers allow the controller to monitor events and get useful information
on the status of the devices it controls.

Standard Event Status Register (ESR)
Bits Mnemonics Bit Value
7 Power On 128
6 Not used 0
5 Command Error 32
4 Execution Error 16
3 Device Dependent Error 8
2 Query Error 4
1 Not used 0
0 Operation Complete 1