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Commands consist of a command header and, if necessary, parameter data. All
commands must be terminated with either a carriage return (ASCII 0D hex or
13 decimal) or new line character (ASCII 0A hex or 10 decimal).
Command headers consist of one or more mnemonics separated by colons (:).
Mnemonics may use letter characters, the underscore character (_), and possi
-
bly numeric digits as well. Commands are not case sensitive. Mnemonics often
have alternate forms. Most mnemonics have a long form that is more readable
and a short form consisting of three or four characters that is more efficient.
A mnemonic may end with a numeric suffix that specifies one of a set of inde
-
pendent function blocks such as input channel data paths. If a numeric suffix is
omitted when a particular block must be specified, an error is generated
(“Header suffix out of range”).
Query commands are commands that request data in response. Query com
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mands have a 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
buffer until 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 buffer holds 128 characters and each output buffer holds 256 characters.
Some commands require parameter data 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 allow compound commands (multiple commands per line
separated with semicolons). All commands are sequential. The execution of
each command is completed before subsequent commands are processed.
8.4 Commands
Table 3, Alphabetical List of Commands in Section 8.3.1, lists the commands
in alphabetical order. In this section the commands are arranged into the fol
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lowing groups:
Measurement Commands – commands for reading measurement data.
Measurement Control Commands – commands for the timing and action of
the measurement process.
Channel Commands – commands for selecting channels.
Probe Commands – commands for temperature conversion and probe
characterization.
Calibration Coefficient Commands – commands for channel calibration
coefficients.
Display Commands – commands for display options and settings.
1529 Chub-E4 Thermometer Readout
User’s Guide
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