Rohde & Schwarz CMU-K20, Operating Manual

Page: 428 / 646

Signalling: POWer[:NORMal] CMU-K20/21/22/23/24
1115.6088.12 6.124 E-12
Subsystem POWer[:NORMal]...:LIMit:LINE
The subsystem POWer[:NORMal]...:LIMit:LINE defines the limit lines and thus the tolerance values for
the normal burst power measurement. The subsystem corresponds to the tab Limit Lines in the popup
menu Power Configuration.
CONFigure:POWer[:NORMal][:GMSK]:LIMit:LINE:UPPer<nr>[:STATic]:ENABle <Enable>
CONFigure:POWer[:NORMal]:EPSK:LIMit:LINE:UPPer<nr>[:STATic]:ENABle <Enable>
CONFigure:POWer[:NORMal][:GMSK]:LIMit:LINE:UPPer<nr>[:STATic]
CONFigure:POWer[:NORMal]:EPSK:LIMit:LINE:UPPer<nr>[:STATic]
Upper Limit Line
Parameters for query: <StartTime>, <EndTime>, <StartRelLevel>, <EndRelLevel>,
<StartAbsLevel>, <EndAbsLevel>, <StartVisibility>, <EndVisibility>
for setting:
<StartTime>, <EndTime>, <StartRelLevel>, <EndRelLevel>,
<StartAbsLevel>, <EndAbsLevel>, <Visibility>
Parameters Value range Description of parameters Def. value
<Enable>
<StartTime>,
<EndTime>,
<StartRelLevel>,
<EndRelLevel>,
<StartAbsLevel>,
<EndAbsLevel>,
<Visibility>
<StartVisib.>
<EndVisib>
ON | OFF
–10 bit to +156 ¾ bit | OFF
–10 bit to +156 ¾ bit | OFF,
–100 dB to 20 dB | OFF,
–100 dB to 20 dB | OFF,
–90 dBm to 50 dBm | OFF,
–90 dBm to 50.0 dBm | OFF,
ON | OFF Defined section on/off
Start point of time
End point of time
Start point of level (relative)
End point of level (relative)
Start point of level (absolute)
End point of level (absolute)
Range of limit lines on/off See
below
Description of command FW vers.
These commands activate and define upper limit lines for normal bursts. The limit lines are defined
section by section; the suffix <nr> numbers the various ranges of the limit lines. V1.15
For GMSK modulation (keyword
[:GMSK]
), 8 areas are defined in the default setting, another 8 areas can be
activated if required. The default settings are given in the table below:
for Enable forTable
Start Stop Start Stop Start Stop
Suffix Enable Time Time rel.Level rel.Level abs.Level abs.Level Visibility
1 ON –10.0 bit –7 ¼ bit –59.0
1
dB –59.02 dB –36.0
2
dBm –36.0
2
dBm ON
2 ON –7 ¼ bit –4 ½ bit –30.0 dB –30.0 dB –17.0
3
dBm –17.0
3
dBm ON
3 ON –4 ½ bit –2 ¼ bit –6.0 dB –6.0 dB OFF OFF ON
4 ON –2 ¼ bit +½ bit +4.0 dB +4.0 dB OFF OFF ON
5 ON ½ bit 150 ¼ bit +1.0 dB +1.0 dB OFF OFF ON
6 ON 150 ¼ bit 152 ½ bit –6.0 dB –6.0 dB OFF OFF ON
7 ON 152 ½ bit 155 ¼ bit –30.0 dB –30.0 dB –17.0
3
dBm –17.0
3
dBm ON
8 ON 155 ¼ bit 156 ¾ bit –59.0
1
dB –59.0
1
dB –36.0
2
dBm –36.0
2
dBm ON
9 OFF OFF OFF OFF OFF OFF OFF OFF
...
16 OFF OFF OFF OFF OFF OFF OFF OFF
The setting Visibility = Off implies that the corresponding range, including the limit check, is switched off. Enable
= Off switches off the entire limit check.
1 GSM400/850/900. The value for GSM1800 and GSM1900 is –48.0 dB.
2
GSM400/850/900. The value for GSM1800 and GSM1900 is –48.0 dBm.
3
GSM400/850/900. The value for GSM1800 and GSM1900 is –20.0 dBm.
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