Rohde & Schwarz EX-IQ-BOX, Руководство пользователя

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Remote Control Basics
R&S
®
EX-IQ-BOX
214 User Manual 1409.5570.32 ─ 05
Commands
Commands (program messages) are messages the controller sends to R&S DigIConf.
They operate functions and request information.
The commands are subdivided according to two criteria:
●
According to the effect they have on the instrument:
–
Setting commands cause instrument settings such as a reset of the instrument
or setting the frequency.
– Queries cause data to be provided for remote control, e.g. for identification of the
instrument or polling a parameter value. Queries are formed by directly appending
a question mark to the command header.
●
According to their definition in standards:
–
Common commands: their function and syntax are precisely defined in standard
IEEE 488.2. They are employed identically on all instruments (if implemented).
They refer to functions such as management of the standardized status registers,
reset and self test.
– Instrument control commands refer to functions depending on the features of
the instrument such as frequency settings. Many of these commands have also
been standardized by the SCPI committee. These commands are marked as
"SCPI compliant" in the command reference chapters. Commands without this
SCPI label are device-specific, however, their syntax follows SCPI rules as per-
mitted by the standard.
Instrument responses
Instrument responses (response messages and service requests) are messages the
R&S
EX-IQ-BOX sends to the controller after a query. They can contain measurement
results, instrument settings and information on the instrument status.
8.1.2 LAN interface
For remote control via a network, the controller and the PC on that the R&S DigIConf is
installed (if not the same) must be connected via the LAN interface to a common network
with TCP/IP network protocol. They are connected using a commercial RJ-45 cable.
Software for remote control must be installed on the controller.
IP address
Only the IP address or the computer name (LAN device name) is required to set up the
connection. The IP address/computer name is part of the "visa resource string" used by
the programs to identify and control the instrument. The visa resource string has the form:
TCPIP::host address::[LAN device name]::[SOCKET]
, where:
●
TCPIP designates the network protoccol
●
host address is the IP address
●
LAN device name is the computer name of the control device (alternative to IP
address)
●
SOCKET indicates that the socket protocol is used
Remote Control Interfaces and Protocols