Remote control basics
R&S
®
NRX
477
User Manual 1178.5566.02 ─ 09
The R&S NRX works with several status register levels to support a high number of
measurements. 8
measurements are grouped on one status register. The first status
register groups the measurements 1 to 8. The next lower status register groups the
measurements 9 to 16, and so on. Thus, the suffixes (m+1), (m+2), ... read as follows:
Status register
SCPI suffix
Value of suffix m
Measurement covered
(m+1) to (m+8)
First hierarchy
1
0
1 to 8
Second hierarchy
2
8
9 to 16
Third hierarchy
3
16
17 to 24
...
...
...
...
8th hierarchy
8
56
57 to 64
The SCPI suffix of the status register is always (m+1). The suffix of the
CALC
command
corresponds to the measurement channel, (m+x). Bit
0 summarizes the status of the
next lower status register.
14.4.2
Structure of a SCPI status register
Each SCPI register consists of five 16-bit registers that have different functions, see
. The individual bits are independent of each other, i.e. each hardware sta-
tus is assigned a bit number which is the same for all five registers. Bit
15, the most-
significant bit, is set to 0 in all registers, thus preventing problems some controllers
have with the processing of unsigned integers.
Figure 14-2: Standard SCPI status register
CONDition status register part
The five parts of a SCPI register have different properties and functions:
Status reporting system
