R&S NRP
Remote Control - Fundamentals
1144.1400.12 5.7
E-3
Device-Specific Commands
Hierarchy
Device-specific commands have a hierarchical structure (
Æ
Fig. 5-1
). The various
levels are represented by compound headers. Headers at the highest level (root
level) have one keyword only. This keyword describes an entire command system.
Example:
SENSe[1..4]
This keyword denotes the command system
SENSe<n>.
For lower-level commands, the full path has to be specified, starting with the
highest level in the left-most position. The individual keywords are separated by a
colon ":".
Example
:
SENSe[1..4]:TRACe:POINts <int_value>
This command is at the third level of he SENSE system and sets the number of
test points for the Scope mode.
SENSe
FREQuency
FUNCtion
POWer
SWEep
AVG
TSLot
BURSt
OFFSet
POINts
Fig. 5-1: SCPI command tree
Some keywords are used at several levels within a command system. Their effect
depends on the command structure, i.e. on their position in the command header.
Example
:
SENSe1:TRACe:POINts <int_value>
This command contains the POINts keyword in the third level.
Example
:
SENSe1:TRACe:OFFSet:POINts <int_value>
This command contains the POINts keyword in the fourth level. It defines the time
offset for the display of points in the Scope mode.
Optional
keywords:
In some command systems certain keywords can be inserted into or removed
from the header. These keywords are shown in the manual in square brackets.
For reasons of compatibility with the SCPI standard, the device must be able to
recognize the full length of the command. Some of the commands become
considerably shorter when the optional keywords are omitted.
Example:
[SENSe1]:POWer:TSLot:COUNt 6
