rounds the parameter. For example, if an instrument has a
programmable output imp edance of 50 or 75 ohms, you specied
76.1
for output imp edance, the value is rounded to
75
. If the
instrument setting can only assume integer values, it automatically
rounds the value to an integer. For example, sending
*ESE 10.123
is the same as sending
*ESE 10
.
Examples of numeric parameters:
100
no decimal point required
100.
fractional digits optional
-1.23
leading signs al lowed
4.56e<space>3
space al lowed after e in exponentials
-7.89E-01
use either E or e in exponentials
+256
leading + al lowed
.5
digits left of decimal point optional
Extended Numeric Parameters.
Most measurement related
subsystems use extended numeric parameters to sp ecify physical
quantities.
Extended numeric
parameters accept all numeric
parameter values and other sp ecial values as well. All extended
numeric parameters accept
MAXimum
and
MINimum
as values. Other
special values, suchas
UP
and
DOWN
maybe available as documented
in the instrument's command dictionary. Note that
MINimum
and
MAXimum
can b e used to set or query v
alues. The query forms
are useful for determining the range of values allowed for a given
parameter.
In some instruments, extended numeric parameters accept
engineering unit suxes as part of the parameter v
alue. Refer to the
command summary to see if this capability exists.
Note that extended numeric parameters are not used for common
commands or
STATus
subsystem commands.
Examples of extended numeric parameters:
100.
any simple numeric values
-1.23
4.56e<space>3
-7.89E-01
+256
.5
MAX
largest valid setting
MIN
valid setting nearest negative innity
-100 mV
negative 100 mil livolts
1-84 Getting Started Programming