4-6
IM DLM4038-17EN
4.4 Data
• If a value has more significant digits than are
available, the value will be rounded.
<Voltage>, <Time>, <Frequency>, <Current>
<Voltage>, <Time>, <Frequency>, and <Current>
indicate decimal values that have physical significance.
A <Multiplier> or <Unit> can be attached to the <NRf>
form that was described earlier. The following types of
expressions are possible.
Format Example
<NRf><Multiplier><Unit>
5MV
<NRf><Unit>
5E-3V
<NRf>
5E-3
<Multiplier>
<Multipliers> that you can use are indicated in the
following table.
Symbol Word
Multiplier
EX Exa
10
18
PE Peta
10
15
T Tera
10
12
G Giga
10
9
MA Mega
10
6
K Kilo
10
3
M Milli
10
–3
U Micro
10
–6
N Nano
10
–9
P Pico
10
–12
F Femto
10
–15
A Atto
10
–18
<Unit>
<Units> that you can use are indicated in the following
table.
Symbol Word
Description
V Volt
Voltage
S Second
Time
HZ Hertz
Frequency
MHZ Megahertz
Frequency
A Ampere
Current
• <Multiplier> and <Unit> are not case sensitive.
• “U” is used to indicate micro (“μ”).
• “MA” is used for Mega to distinguish it from Milli.
Megahertz, which is expressed as “MHZ,” is an
exception. Therefore, “M (Milli)” cannot be used for
frequencies.
• If both <Multiplier> and <Unit> are omitted, the
default unit is used.
• Response messages are always expressed in the
<NR3> form. Response messages are returned
using the default unit without the <Multiplier> or
<Unit>.
Data
Data contains conditions and values that are written
after the header. A space separates the data from the
header. Data is grouped as follows:
Data Description
<Decimal>
A value expressed in decimal notation
(Example: Probe attenuation for CH1
-> CHANnel1:PROBe 100
)
<Voltage><Time> A physical value
<Frequency>
(Example: Time-axis range
<Current>
-> TIMebase:TDIV 1US
)
<Register>
A register value expressed as binary, octal,
decimal or hexadecimal
(Example: Extended event register value
-> STATUS:EESE #HFE
)
<Character data> Predefined character string (mnemonic). Select
from the available strings in braces.
(Example: Select the input coupling of CH1
-> CHANnel1:COUPling{AC|DC|DC50|GND}
)
<Boolean>
Indicates ON and OFF. Specify ON, OFF, or a
value
(Example: Turn on the CH1 display
-> CHANnel1:DISPlay ON
)
<String data>
User-defined string
(Example: Comment attached to screen data
output
-> MATH1:UNIT:USERdefine "VOLT"
)
<Filename>
Indicates a file name.
(Example: Save file name
-> FILE:SAVE:WAVeform:NAME "CASE1"
)
<Block data>
Data that contains 8-bit values
(Example: Response to acquired waveform data
-> #800000010ABCDEFGHIJ
)
<Decimal>
<Decimal> indicates a value expressed as a decimal
number, as shown in the table below. Decimal values
are written in the NR form as specified in ANSI X3.42-
1975.
Symbol Description
Example
<NR1> Integer
125
-1 +1000
<NR2>
Fixed point number
125.0
-.90 +001.
<NR3>
Floating-point number
125.0E+0 -9E-1 +.1E4
<NRf>
Any form from <NR1> to <NR3>
• The DLM4000 can receive decimal values that are
sent from the controller in any form, from <NR1> to
<NR3>. This is expressed as <NRf>.
• The DLM4000 returns a response to the controller in
one of the forms from <NR1> to <NR3> depending
on the query. The same form is used regardless of
the size of the value.
• For the <NR3> form, the plus sign after the “E” can
be omitted. You cannot omit the minus sign.
• If a value outside the setting range is entered, the
value is adjusted to the closest value within the
range.
