Specifications

For example, if the command syntax shows SEQuence, then SEQ and
SEQUENCE are both acceptable forms. Other forms of SEQuence, such as
SEQUEN or SEQU will generate an error. Upper or lower case letters can be used.
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 a root command is sent but not the preceding second level
implied command. In this case, the instrument assumes the implied command was
intended to be used and it responds as if it was sent. Examine the INITiate
subsystem shown below:
INITiate
[:IMMediate]
The second level command :IMMediate is an implied command. To set the
instrument’s trigger system to INIT:IMM, 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 Parameter Types. The following section contains explanations and examples of
parameter types that will be seen 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
VT1419A Command Reference
Chapter 6 179
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com