inH2O4C Pressure in inches of water at 4 °C
inH2O20C Pressure in inches of water at 20 °C
inH2O60F Pressure in inches of water at 60 °F
cmH2O4C Pressure in centimeters of water at 4 °C
cmH2O20C Pressure in centimeters of water at 20 °C
mmH2O4C Pressure in millimeters of water at 4 °C
mmH2O20C Pressure in millimeters of water at 20 °C
bar Pressure in bar
mbar Pressure in millibar
kPa Pressure in kilopascals
MPa Pressure in megapascals
kg/cm2 Pressure in kilograms per square centimeter
1 Parameter only
b) General Rules
The general rules for parameter usage are as follows:
• Numeric parameters may have up 15 significant digits and their value can be
in the range +/-1.0E+/-20.
• Including too many or too few parameters causes a command error.
• Null parameters cause an error, e.g., the adjacent commas in OUT 1V,
,;OPER.
• Expressions, for example 4+2*13, are not allowed as parameters.
c) Extra Space or Tab Characters
In the command descriptions, parameters are shown separated by spaces. One
space after a command is required (unless no parameters are required). All other
spaces are optional. Spaces are inserted for clarity in the manual and may be left in
or omitted as desired. You can insert extra spaces or tabs between parameters as
desired. Extra spaces within a parameter are generally not allowed, except between
a number and its associated multiplier or unit.
d) Terminators
Table 8 summarizes the terminator characters for both the IEEE-488 and the RS-232
remote interfaces.
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