Rohde & Schwarz 1065.6000.20, Руководство по эксплуатации

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Status Reporting System FSE
1065.6016.12 5.30 E-16
STATus QUEStionable:SYNC Register
This register comprises information about sync and burst events related to Vector Analyzer mode,
option FSE-B7, and to GSM measurements, options FSE-K10/20/30 and FSE-K11/21/31). It can be
queried with commands
STATus:QUEStionable:SYNC:CONDition?
and "
STATus
:QUEStionable:SYNC[:EVENt]?
.
Table 5-10 Meaning of bits in STATus:QUEStionable:SYNC register
Bit No. Meaning
0 BURSt not found
This bit is set if a burst was not found.
1 SYNC not found
This bit is set if the sync sequence of midamble was not found.
2
No carrier
This bit is set if the carrier power determined in the pre-measurement is 20 dB belowof the expected signal
power (options FSE-K10/ FSE-K11).
3 Carrier overload
This bit is set if the carrier power determined in the pre-measurement is 4 dB above of the expected signal
power (options FSE-K10/ FSE-K11).
4 to 14 not used
15 This bit is always 0.
The ’SYNC not found’ and ’BURSt not found’ bits are set with all measurements evaluating this
information. The bits are recalculated for each sweep so that they show the current status at the end of
a sweep.
GSM measurements (options FSE-K10 and FSE-K11) carrying along the two bits synchronously with
the sweep:
- CPW Carrier Power activated with ’Sync To Midamble’ (*)
- PVT Power versus Time activated with ’Sync To Midamble’ (*)
- PFE Phase/Frequency Error
- MAC Modulation Accuracy
- TAA Trigger AutoAdjust
* With GMSK modulation, the PVT and CPW measurements do not perform a burst search. The burst search is only active
with 8PSK modulation (EDGE).
The Carrier Overload’ and ’No Carrier’ bits are reset at the beginning of each GSM measurement
(options FSE-K10 and FSE-K11) and, if required, set at the end of the pre-measurement. If single-step
measurements (CPW) are performed, the bits are set after the initial step and reset again at the
beginning of the next.
GSM measurements with bit setting as required:
- CPW Carrier Power (first step only, measurement of full power)
- PVT Power versus Time (setting possible after each of the two pre-measurements)
- MOD Modulation Spectrum
- TRA Transient Spectrum (**)
** With FSE-K10 (mobile) and power coupling OFF selected, a pre-measurement is not performed. Measuring the carrier
power is therefore not possible and so the two bits are not set.