R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT Remote Control
Messages
Operating Manual 1145.1084.12 – 30 581
o If the menu key requires a numeric entry (e.g. entry of the sweep range: Start, Stop etc.)
the command opens the numeric entry bar. The instrument is switched back to remote
control mode as soon as the entry has been made manually.
o If the menu key requires several entries to be made in a dialog or in a wizard (e.g. the S-
Param Wizard), the command opens this dialog/wizard. All entries can be made manually.
The instrument is switched back to remote control mode as soon as the dialog or wizard
is closed.
DISPlay:MENU:KEY:EXECute '<menu_key>' works for all menu keys, even though the
analyzer may not provide an equivalent remote control command.
SYSTem:USER:KEY
SYSTem:USER:KEY:FUNCtion
DISPlay:MENU:KEY:EXECute
DISPlay:MENU:KEY:SELect
Messages
The messages transferred on the data lines of the GPIB bus or via the RSIB / VXI-11 protocol can be
either interface messages or device messages. For a description of interface messages refer to the
relevant sections:
GPIB Bus Interface
RSIB Protocol
VXI-11 Protocol
Device Messages (Commands and Device Responses)
Device messages are transferred in ASCII format. A distinction is made according to the direction in which
device messages are transferred:
Commands are messages the controller sends to the instrument. They operate the device
functions and request information.
Device responses are messages the instrument sends to the controller after a query. They can
contain measurement results, instrument settings and information on the instrument status.
Commands are subdivided according to two criteria:
1. According to the effect they have on the instrument:
Setting commands cause instrument settings such as a reset of the instrument or setting the
output level to some value.
Queries cause data to be provided for output on the GPIB bus, e.g. for identification of the device
or polling the active input.
2. According to their definition in standard IEEE 488.2:
Common commands have a function and syntax that is exactly defined in standard IEEE 488.2.
Typical tasks are the management of the standardized status registers, reset and selftest.
Instrument-control commands are functions that depend on the features of the instrument such as
frequency settings. A majority of these commands has also been standardized by the SCPI