Bristol 428 - SCPI Communications Scheme

Model 428 User’s Manual REMOTE COMMUNICATIONS
Bristol Instruments, Inc. 40
SCPI Communications Scheme
This section describes the communication scheme of the 428 Multi-Wavelength Meter. It
follows the Standard Commands for Programmable Instruments (SCPI) Syntax and
Style Guidelines. The following table provides a summary of commands by subsystem.
Note: “[…]” brackets indicate an optional argument, and “{… | … | …}” brackets indicate
a choice from a set of arguments.
Group & Command
Description
Common Commands
These commands are defined by IEEE 488.2 and
control the functions that are common to all IEEE
488.2 instruments.
*CLS
Clears all event registers and the error queue.
*ESE?
Queries the bits in the standard event status enable
register.
*ESE <integer>
Sets the bits in the standard event status enable
register.
*ESR?
Queries the value of the standard event status
register.
*IDN?
Queries instrument model number, serial number
and firmware version.
*OPC?
Queries the operation complete bit of the standard-
event status register.
*RCL
Restores instrument settings.
*RST
Resets instrument to default settings.
*SAV
Saves instrument settings.
*STB?
Queries the value of the status byte.
Measurement Instructions
These commands obtain measurements from the
instrument.
:MEASure {:ARRay | :SCALar} {:POWer |
:ENVironment | :FREQuency | :WAVelength |
:WNUMber }?
Queries power or wavelength that will be measured
during the next scan cycle.
MEAS is interpreted to mean, "Initiate a new reading
and return the value when the reading is complete".
When used with a :SCALar command, only one
value is returned. When used with an :ARRay
command, a comma delimited array of values,
preceded by the number of values, is returned.
:READ {:ARRay | :SCALar} {:POWer |
:ENVironment | :FREQuency | :WAVelength |
:WNUMber}?
Queries power or wavelength that is currently being
measured, and returns when the measurement is
complete.
When used with a :SCALar command, only one
value is returned. When used with an :ARRay
command, a comma delimited array of values,
preceded by the number of values, is returned.