Specifications

Operating Manual SEFRAM 4451

M4451 A00

A query error indicates that the output queue control has detected a problem. This could occur if

either an attempt was made to read data from the instrument if none was available, or when data

were lost. Data could be lost when a query causes data to be formatted for the controller to be

read, and the controller sends more commands without reading the data.

Code Description

-410 Query INTERRUPTED – Data were sent before the entire response of a previous query

was read

-420 Query UNTERMINATED – An attempt was made to read a response before the

complete program message meant to generate that response was sent

-430 Query DEADLOCKED – The input buffer and output queue are full, and the controller is

attempting to send more data. In this case the output queue and input buffers will be

cleared. Parsing will resume after the END message is detected

-440 Query UNTERMINATED after indefinite response – A query was received in the same

program message after a query requiring an indefinite response was formatted.

Essentially this means that the *IDN? common query and the :ARB:DATA? query

should not be followed by more query messages in the same program message

4.10.5.5 System Events

System events have positive valued codes. They are not defined by SCPI, but are specific to the

PG.

Code Description

401 Power on

402 Operation complete – The *OPC command as been executed

4.11 IEEE 488.2 COMMON COMMANDS AND QUERIES

4.11.1 System Data Commands

The identification query command, *IDN?, enables unique identification of the device over the

GPIB. It returns a string with four fields:

Manufacturer name

Model name

Serial number (0 if not relevant)

Version number

4.11.2 Internal Operation Commands

4.11.2.1 *RST - Reset Command

The Reset command resets the device and returns it to the factory default power-up state.

Command Type: Common Command

Syntax: *RST

4.11.2.2 *TST? - Self-Test Query

The self-test query causes an internal self-test to be performed. This test consists of checking

the status of the period, pulse and output cards.

Command Type Common Query

Syntax *TST?

Response ASCII 0 if test passes

ASCII 1 if test fails