Commands consist of a command header and, if necessary,parameter data. All
commands must beterminated with either a carriage return (ASCII 0D hex or
13 decimal) or newline character (ASCII 0A hex or 10 decimal).
Command headers consistof one or more mnemonics separated by colons (:).
Mnemonics may use lettercharacters, the underscore character (_), and possi-
bly numericdigits as well. Commands are not case sensitive. Mnemonics often
havealternate forms. Most mnemonics have a long form that is more readable
and a short form consistingof threeor four characters thatis more efficient.
A mnemonic may end with a numeric suffixthat specifies one of a set of inde-
pendent function blocks such as input channel data paths. If a numeric suffixis
omitted when a particular block must be specified, an error is generated
(“Header suffixout of range”).
Query commands arecommands that request data in response. Query com-
mands havea question mark (?) immediately following the command header.
Responses to query commands are generated immediately and placed in the
output buffer.Responses are then transmitted automatically over the RS-232 or
IR ports. When using the IEEE-488 interface,responses remain in the output
bufferuntil read or until another command is received or the power is turned
off.Responses are lost if not read before the next command is received. Each
input bufferholds 128 characters and each output buffer holds 256 characters.
Some commands require parameterdata to specify values for one or more pa-
rameters. The command header is separated from the parameter data by a space
(ASCII 20 hex or 32 decimal). Multiple parameters are separated by a comma
(,).
The 1529 does not allowcompound commands (multiple commands per line
separated with semicolons). All commands are sequential. The execution of
each command is completed before subsequentcommands are processed.
8.4 Commands
Table3, Alphabetical List of Commands in Section 8.3.1, lists the commands
in alphabeticalorder. In this section the commands are arranged into the fol-
lowinggroups:
MeasurementCommands – commands for reading measurement data.
MeasurementControl Commands – commands for the timing and action of
the measurement process.
Channel Commands – commands for selectingchannels.
ProbeCommands – commands for temperature conversion and probe
characterization.
Calibration CoefficientCommands – commands for channel calibration
coefficients.
Display Commands – commands for displayoptions and settings.
1529 Chub-E4 Thermometer Readout
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