Remote Commands
R&S
®
Spectrum Rider FPH
402
User Manual 1321.1011.02 ─ 06.00
Example:
SYST:VERS?
Usage:
Query only
13.6.11
Status Reporting System
The status reporting system stores all information on the present operating state of the
instrument, and on errors which have occurred. This information is stored in the status
registers and in the error queue. The status registers and the error queue can be quer-
ied via Ethernet.
The information is of a hierarchical structure. The register status byte (STB) defined in
IEEE 488.2 and its associated mask register service request enable (SRE) form the
uppermost level. The STB receives its information from the standard event status reg-
ister (ESR) which is also defined in IEEE 488.2 with the associated mask register stan-
dard event status enable (ESE) and registers
STATus:OPERation
and
STATus:QUEStionable
which are defined by SCPI and contain detailed information
on the instrument.
The output buffer contains the messages the instrument returns to the controller. It is
not part of the status reporting system but determines the value of the MAV bit in the
STB.
13.6.11.1
Structure of an SCPI Status Register
Each standard SCPI register consists of 5 parts which each have a width of 16 bits and
have different functions. The individual bits are independent of each other, i.e. each
hardware status is assigned a bit number that applies to all five parts. For example, bit
0 of the STATus:OPERation register is assigned to the calibration status of the R&S
Spectrum Rider. Bit 15 (the most significant bit) is set to zero for all parts. Thus the
contents of the register parts can be processed by the controller as positive integer.
Figure 13-6: The status-register model
CONDition part
The CONDition part is directly written into by the hardware or the sum bit of the next
lower register. Its contents reflects the current instrument status. This register part can
only be read, but not written into or cleared. Its contents is not affected by reading.
Remote Control - Commands
