Rohde & Schwarz CMU-K20, Руководство по эксплуатации

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Signalling: Receiver Quality Measurements
CMU-K20/K21/K22/K23/K24
1115.6088.12 4.134 E-12
Confidence
BER results
If a confidence BER test is performed (i.e. if the stop condition
Confidence Level
is
set), an additional output field displays one of the following measurement results:
Running
Measurement still running, no early fail or early pass decision
made.
Early Fail
Measurement stopped because an early fail limit was exceeded.
The DUT is probably out of tolerance.
Early Pass
Measurement stopped because an early pass limit was
exceeded. The DUT is probably within tolerance.
Fail
Measurement terminated with a
Min. Test Time
larger than the
tartet test time so that no early pass or early fail decision could
be made;
bit errors exceed upper limit (see
Fig. 4-58
on p.
4.127 ).
Pass
Single-limit test: Measurement terminated with a
Min. Test Time
larger than the tartet test time so that no early pass or early fail
decision could be made,
bit errors below the lower limit.
Dual-limit test: Measurement terminated with no upper or lower
limit exceeded (see
Fig. 4-59
on p. 4.128 ).
Too High
Upper limit exceeded in a dual-limit test (
Fig. 4-59
on p. 4.128 ).
Too Low
Upper limit exceeded in a dual-limit test.
The
Confidence Settings
are described on p. 4.138 . For background information
and application examples refer to section
Statistical BER Tests
on p. 4.125 ff.
Remote Control
CONFigure:RXQuality:BER<nr>:CONTrol:REPetition CLEVel
READ[:SCALar]:RXQuality:BER? etc.
Test Setup
The table below the measurement results indicates the current test setup together
with the
Meas. Mode
, the
Traffic
mode and the
Bit Steam
. The settings are also
indicated in the
Settings
table in the left half of the measurement menu.
Settings
The
Settings
table gives an overview of the configuration of the current
measurement. This includes the settings made via the softkeys and hotkeys of the
Receiver Quality
menu, and the tolerances set in the
Limits
tab of the
Receiver
Quality Configuration
menu, see section
Upper Limits for Bit Error Rate (Receiver
Quality Configuration – Limits)
on page 4.143 .
The parameters depend on the current application and the measurement mode.
Remote control
See sections
Test Settings
on page 4.129 and
Upper Limits for Bit Error Rate
(Receiver Quality Configuration – Limits)
on p. 4.143 .
深圳德标仪器
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