will generate an error. You may use upper or lower case letters. Therefore,
SEQUENCE
,
sequence
, and
SeQuEnCe
are all acceptable.
Implied Commands
Implied commands are those which appear in square brackets ([ ]) in the command
syntax. (Note that the brackets are not part of the command, and are not sent to the
instrument.) Suppose you send a second level command but do not send the
preceding implied command. In this case, the instrument assumes you intend to use
the implied command and it responds as if you had sent it. Examine the
INITiate
subsystem shown below:
INITiate
:CONTinuous ON | OFF
[:IMMediate]
The second level command
[:IMMediate]
is an implied command. To set the
instrument’s trigger system to
INITiate:IMMediate
, you can send either of the
following command statements:
INIT:IMM
or
INIT
Variable Command
Syntax
Some commands will have what appears to be a variable syntax. As an example:
OUTPut:TTLTrg<
n
>:STATe ON
In these commands, the “
<
n
>
” is replaced by a number. No space is left between
the command and the number because the number is not a parameter. The number
is part of the command syntax. The purpose of this notation is to save a great deal
of space in the Command Reference. In the case of
…
"TTLTrg<
n
>
…
, <
n
>
can be
from 0 through 7. An example command statement:
OUTPut:TTLTrg2:STATe ON
Parameters
This section contains explanations and examples of parameter types you will see
later in this chapter.
Parameter Types
Explanations and Examples
Numeric
Accepts all commonly used decimal representations of numbers
including optional signs, decimal points, and scientific notation:
123
,
123E2
,
-123
,
-1.23E2
,
.123
,
1.23E-2,
1.23000E-01
.
Special cases include
MIN
,
MAX
, and
INFinity
.
A parameter that represents units may also include a units suffix.
These are:
Volts;
V, mv=10
-3
, uv=10
-6
Ohms;
ohm, kohm=10
3
, mohm=10
6
Seconds;
s, msec=10
-3
, usec=10
-6
Hertz;
hz, khz=10
3
, mhz=10
6
, ghz=10
9
The Comments section within the Command Reference
154 HP E1313/E1413 Command Reference
Chapter 5
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