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Network operation and remote control

R&S

SMA100B

390User Manual 1178.3834.02 ─ 09

●

Standard Event Status, i.e. the Event status Register (ESR) and the Event Status

Enable (ESE), see Chapter 13.4.4, "Event status register (ESR) and event status

enable register (ESE)", on page 393.

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Questionable Status and Operation Status, the (SCPI status registers, see

Chapter 13.4.2, "Structure of a SCPI status register", on page 390, Chapter 13.4.5,

"Questionable status register (STATus:QUEStionable)", on page 393 and Chap-

ter 13.4.6, "Operation status register (STATus:OPERation)", on page 394.

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Output-Queue

The output queue contains the messages the instrument returns to the controller. It

is not part of the status reporting system but determines the value of the MAV bit in

the STB and thus is represented in the overview.

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Error- /Event-Queue

The error-/event-queue contains all errors and events that have occurred in the

past. When reading the queue, the instrument starts with the first occurred error/

event.

All status registers have the same internal structure.

SRE, ESE

The service request enable register SRE can be used as ENABle part of the STB if the

STB is structured according to SCPI. By analogy, the ESE can be used as the ENABle

part of the ESR.

13.4.2 Structure of a SCPI status register

Each SCPI status register consists of five parts. Each part has a width of 16 bits and

has different functions. The individual bits are independent of each other, i.e. each

hardware status is assigned a bit number, which is valid for all five parts. Bit 15 (the

most significant bit) is set to zero for all parts. Thus, the contents of the register parts

can be processed by the controller as positive integers.

Figure 13-7: The status-register model

Status reporting system

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