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PSU Programming Manual

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or query errors; see the other error definitions

in this section.

Error Code

Description

-310 System error

Indicates that some error, termed “system

error” by the device, has occurred. This code is

device-dependent.

-320 Storage fault

Indicates that the firmware detected a fault

when using data storage. This error is not an

indication of physical damage or failure of any

mass storage element.

Query Errors

Overview

An <error/event number> in the range [ -499 , -

400 ] indicates that the output queue control of

the instrument has detected a problem with the

message exchange protocol described in IEEE

488.2, chapter 6. The occurrence of any error in

this class shall cause the query error bit (bit 2)

in the event status register (IEEE 488.2, section

11.5.1) to be set. These errors correspond to

message exchange protocol errors described in

IEEE 488.2, section 6.5. One of the following is

true:

 An attempt is being made to read data from the

output queue when no output is either present

or pending;

 Data in the output queue has been lost.

Events that generate query errors shall not

generate command errors, execution errors, or

device-specific errors; see the other error

definitions in this section.

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