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3.4 Data
<Voltage>, <Current>, <Time>, <Frequency>
<Voltage>, <Current>, <Time> and <Frequency>
indicate decimal values which have physical
significance. <Multiplier> or <Unit> can be attached to
<NRf>. They can be entered in any of the following
forms.
Form
Example
<NRf><Multiplier><Unit>
5MV
<NRf><Unit>
5E-3V
<NRf><Multiplier>
5M
<NRf>
5E-3
<Multiplier>
Multipliers which can be used are shown below.
Symbol
Word
Exa
EX
PE
Peta
T
Tera
G
Giga
MA
Mega
Kilo
K
Mili
M
Micro
U
Nano
N
Pico
P
Femto
F
<Unit>
Units which can be used are shown below.
Symbol
Word
Volt
V
Ampere
A
Second
S
Hertz
HZ
Megahertz
MHZ
<Multiplier> and <Unit> are not case sensitive.
"
" is used to indicate "µ".
U
"
MA
" is used for Mega (M) to distinguish it from Mili,
except for in the case of Megahertz, which is
expressed as "
MHZ
". Hence, it is not permissible to use
"
M
" (Mili) for Hertz.
If both <Multiplier> and <Unit> are omitted, the default
unit will be used.
Response messages are always expressed in <NR3>
form. Neither <Multiplier> nor <Unit> is used,
therefore the default unit is used.
3-6
Description
18
10
15
10
12
10
9
10
6
10
3
10
-3
10
-6
10
-9
10
-12
10
-15
10
Description
Voltage
Current
Time
Frequency
Frequency
<Register>
<Register> indicates an integer, and can be expressed
in hexadecimal, octal or binary as well as as a decimal
number. <Register> is used when each bit of a value
has a particular meaning. <Register> is expressed in
one of the following forms.
Form
<NRf>
#H<Hexadecimal value made up of the digits 0 to 9, and A to F>
#Q<Octal value made up of the digits 0 to 7>
#B<Binary value made up of the digits 0 and 1>
<Register> is not case sensitive.
Response messages are always expressed as <NR1>.
<Character Data>
<Character data> is a specified string of character data
(a mnemonic). It is mainly used to indicate options,
and is chosen from the character strings given in { }.
For interpretation rules, refer to "Header Interpretation
Rules" on page 3-4.
Form
{NORMal|HARMonics}
As with a header, the "
COMMunicate:VERBose
command can be used to return a response message
in its full form. Alternatively, the abbreviated form can
be used.
The "
COMMunicate:HEADer
<character data>.
<Boolean>
<Boolean> is data which indicates ON or OFF, and is
expressed in one of the following forms.
Form
{ON|OFF|<NRf>}
When <Boolean> is expressed in <NRf> form, OFF is
selected if the rounded integer value is "
selected if the rounded integer is "
A response message is always "
and "
0
" if it is OFF.
<Character String Data>
<Character string data> is not a specified character
string like <Character data>. It is an arbitrary
character string. A character string must be enclosed
in single quotation marks (
(
).
"
Form
<Character string data>
Response messages are always enclosed in double
quotation marks.
Example
1
#H0F
#Q777
#B001100
Example
NORMAL
"
" command does not affect
Example
ON
OFF
1
0
0
0
" and ON is
".
Not 0
1
" if the value is ON
'
) or double quotation marks
Example
"ABC" "IEEE488.2-1987"
IM 253710-11E
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