R&S QAR Series, User Manual

Page: 86 / 96

Remote Control - OPC
R&S
®
QAR
86 User Manual 1178.7200.02 ─ 04
Table 7-6: String variables length
Variable name Maximum string length
Configuration_x.Configuration_<dd> 83
Error_Msg 320
Path_Results 260
Path_Diagnostics 260
Timestamp 32
*.Unit 8
7.2 Device States
While operating, the R&S QAR gets different states as shown in Figure 7-5 .
1. The device starts in
State.Initializing
.
2. The initialization runs:
● If initialization succeeds, the next state is
State.Ready_ToMeasure
.
You can now trigger a measurement.
● If errors occur during initialization, the next state is
State.Malfunction
.
It indicates that the device needs repair or replacement.
3. After data acquisition, the data analysis starts and the device switches to
State.Processing
.
While R&S QAR has this state, you can move the DUT.
4. The next state is:
●
State.Results_Ready
- the PLC can now read the results.
●
State.Malfunction
- if you trigger diagnostics but they fail.
5. When the PLC receives the results, it returns
Results_Received
.
The R&S QAR clears and deletes the current measurement results and goes back
to
State.Ready_ToMeasure
.
Device States