R&S NRP
Remote Control - Commands
1144.1400.12 6.77
E-3
IST Flag and Parallel Poll Enable Register (PPE)
Similar to the SRQ, the IST flag combines the complete status information in a single bit. It can be
queried by a parallel poll (
Æ
section
Parallel Poll
, page
6.91
) or by the
*IST?
command.
The Parallel Poll Enable Register (PPE) determines which bits of the STB affect the IST flag. The bits of
the STB are ANDed with the corresponding bits of the PPE; bit 6 is also used - in contrast to the SRE.
The IST flag is obtained by ORing all results together.
The PPE can be set by the
*PRE
command and read by the
*PRE?
query.
Device Status Register
This register contains information on current device states (CONDition register) or states that occurred
since the last query (EVENt register).
The register can be read by the queries
STATus:DEVice:CONDition?
or
STATus:DEVice[:EVENt]?
.
Table 6-17: Meaning of bits used in the Device Status Register
Bit
No.
Meaning
0
Not used
1 Sensor
A
connected
2
Sensor B connected
3 Sensor
A
error
Sensor A is erroneous.
4
Sensor B error
Sensor B is erroneous.
5 Sensor
A
Front/Rear
Indicates whether sensor A is connected at the front (bit is not set) or rear (bit is set) of the device.
6
Sensor B Front/Rear
Indicates whether sensor B is connected at the front (bit is not set) or rear (bit is set) of the device.
7
Sensor C connected
8
Sensor D connected
9
Sensor C error
Sensor C is erroneous.
10
Sensor D error
Sensor D is erroneous.
11
Sensor C Front/Rear
Indicates whether sensor C is connected at the front (bit is not set) or rear (bit is set) of the device.
