5502A
Operators Manual
5-34
OHM
Resistance in units of ohms
KOHM
Resistance in units of kilohms
MOHM
Resistance in units of megohms
NF
Capacitance in units of nanofarads
PF
Capacitance in units of picofarads
UF
Capacitance in units of microfarads
MF
Capacitance in units of millifarads
F
Capacitance in units of farads
CEL
Temperature in degrees Celsius
FAR
Temperature in degrees Fahrenheit
NS
Period in units of nanoseconds
US
Period in units of microseconds
MS
Period in units of milliseconds
S
Period in units of seconds
General Rules
The general rules for parameter use is:
1.
When a command has more than one parameter, the parameters must be disconnected
by commas. For example:
OUT 1V, 2A
.
2.
Numeric parameters can have a maximum of 15 significant digits and their exponents
can be in the range
±
1.0E
±
20.
3.
If you include too many or too few parameters, this causes a command error.
4.
Null parameters cause an error, for example, the adjacent commas in
OUT
1V, ,2A
.
5.
Expressions, for example
4+2*13
, are not permitted as parameters.
6.
Binary Block Data can be in one of two ways: Indefinite Length and Definite Length
format (both IEEE-488.2 standards).
Indefinite Length
The Indefinite Length format accepts data bytes after the #0 until the
ASCII Line Feed character is received with an EOI signal (for RS-232 just a line feed or
carriage return will terminate the block).
Definite Length
The Definite Length format specifies the number of data bytes. #n and
an n-digit number come before the data bytes. The n-digit number identifies how many
data bytes follow. For examples, see the UUT_SEND and *PUD command descriptions
in Chapter 6.
Extra Space or Tab Characters
In the command descriptions in Chapter 6, parameters are shown disconnected by spaces.
One space after a command is necessary (unless no parameters are necessary). All other
spaces are optional. Spaces are put in for clarity in the manual and can be left in or
ignored as necessary. You can put in more spaces or tabs between parameters as
necessary. More spaces in a parameter are typically not permitted. They are permitted
between a number and its related multiplier or unit. Chapter 6 has examples for
commands where parameters or responses are not self-explanatory.
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