User Manual

Common Instrument Functions
R&S
®
FPL1000
190User Manual 1178.3370.02 ─ 03
Bit No. Meaning
5 "FREQuency"
This bit is set if there is anything wrong with the frequency of the local oscillator or the reference
frequency in any of the active channels.
The STATus:QUEStionable:FREQuency Register provides more information on the error type.
6 - 7 Unused
8 "CALibration"
This bit is set if the R&S FPL1000 is unaligned ("UNCAL" display)
9 "LIMit" (device-specific)
This bit is set if a limit value is violated in any of the active channels in any window.
The STATus:QUEStionable:LIMit Register provides more information on the error type.
10 "LMARgin" (device-specific)
This bit is set if a margin is violated in any of the active channels in any window.
The STATus:QUEStionable:LMARgin Register provides more information on the error type.
11 "SYNC" (device-specific)
This bit is set if the R&S FPL1000 is not synchronized to the signal that is applied.
The R&S FPL1000 is not synchronized if:
●
it cannot synchronize to midamble during a measurement or premeasurement
●
it cannot find a burst during a measurement or premeasurement
●
the results deviate too much from the expected value during premeasurements
12 "ACPLimit" (device-specific)
This bit is set if a limit during ACLR measurements is violated in any of the active channels.
The STATus:QUEStionable:ACPLimit Register provides more information on the error type.
13-14 Unused
15 This bit is always 0.
STATus:QUEStionable:ACPLimit Register
Available for the Spectrum application.
The STATus:QUEStionable:ACPLimit register contains information about the results of
a limit check during ACLR measurements. A separate ACPLimit register exists for
each active channel.
You can read out the register withSTATus:QUEStionable:ACPLimit:CONDition?
or STATus:QUEStionable:ACPLimit[:EVENt]?
Table 6-12: Meaning of the bits used in the STATus:QUEStionable:ACPLimit register
Bit No. Meaning
0 ADJ UPPer FAIL
This bit is set if the limit is exceeded in the upper adjacent channel
1 ADJ LOWer FAIL
This bit is set if the limit is exceeded in the lower adjacent channel.
2 ALT1 UPPer FAIL
This bit is set if the limit is exceeded in the upper 1st alternate channel.
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