Rohde & Schwarz CMU-K20, Operating Manual

Page: 221 / 646

CMU-K20/K21/K22/K23/K24
Signalling: Receiver Quality Measurements
1115.6088.12 4.143 E-12
Upper Limits for Bit Error Rate (Receiver Quality Configuration – Limits)
The
Limits
tab defines the upper limits for the individual measured quantities in the Receiver Quality
menu. All settings can be defined separately for the two applications
BER
(with up to ten different test
setups) and
BER Average.
Which of the configured quantities are actually measured depends on the
measurement mode set
(BER, RBER/FER
, or
Burst by Burst
, see section
Measurement Results
on
page 4.132 ).
Fig. 4-64 Receiver Quality Configuration – Limits
Default Settings
The
Default
switches overwrite the settings belonging to an individual BER test
setup or to the BER Average mode.
Remote control
CONFigure:RXQuality:BER<nr>:LIMit:DEFault ON | OFF
CONFigure:RXQuality:BAVerage:LIMit:DEFault ON | OFF
Class II Bits
Upper limit of the bit error rate (or residual bit error rate or burst by burst bit error
rate, depending on the mode) for class II bits (unprotected bits) in the value range
0% to 100%.
Remote control
CONFigure:RXQuality:BER<nr>|BAVerage:LIMit:CLII <ClassIIBER>
Class Ib Bits
Upper limit of the bit error rate (or residual bit error rate, depending on the mode)
for class Ib bits (partly protected bits) in the value range 0% to 100%.
Remote control
CONFigure:RXQuality:BER<nr>|BAVerage:LIMit:CLIB <ClassIbBer>
FER
Upper limit for frame error rate (frame erasure rate), relative number of invalid and
therefore erased frames in the value range 0% to 100% (only measured in
measurement mode
RBER/FER)
.
The default settings for the three upper limits reflect the importance of the three
measured quantities for evaluation of the transmission and received-signal quality
(in the case of unprotected bits, a higher error rate is expected and accepted than
in the case of protected bits, etc.).
深圳德标仪器
135-1095-0799