Gw-instek GOM-802 Programming Manual Manual do Utilizador descarregar pdf (Página 23)

DC MILLI-OHM METER

PROGRAMMER MANUAL

⎯ 44 ⎯

SYSTem:ERRor? returns 0, “No error”

SYSTem:VERSion? (query only)

Function:

Return the SCPI version of the device.

Syntax:

SYSTem:VERSion?

Returns:

1994.0

DC MILLI-OHM METER

PROGRAMMER MANUAL

⎯ 45 ⎯

7. STATUS AND ERROR REPORTING

A set of status registers allows the user to quickly determine the

Meter’s internal processing status. The status register, as well as the

status and event reporting system, adhere to SCPI recommendations.

Structure of System

The sketch of the status and event reporting system is showed as

figure 7. Each component of the sketch represents a set of registers and

queues that can read, report, or enable the occurrence of certain events

within the system.

If a specific event in the Meter sets a bit in a status register, reading

which can tell you what types of events have occurred.

Each bit in the status register corresponds to a bit in an enable register;

the enable bit must be high for the event to be reported to the Status Byte

A Service Request (SRQ) is the last event to occur. The SRQ requests an

interrupt on the GPIB to report events to the system controller.

Status Registers

There are two kinds of status registers are included to the Meter.

z OPERation Status Registers ( CONDition, EVENt, and ENABle)

z QUEStionable Status Registers (CONDition, EVENt, and ENABle)

The lower level nodes: QUEStionable and OPERation each have three 16

bits registers: CONDition, EVENt, and ENABle. Figure 8 shows the

sequential relationship between these three types of registers and the

commands that relate to each register.

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