Rohde & Schwarz CMU-K20, Руководство по эксплуатации

Страница: 419 / 646

CMU-K20/21/22/23/24 Common: SPECtrum:SWITching
1115.6088.12 6.115 E-12
Limits
CONFigure:SPECtrum:SWITching[:GMSK]:LIMit:LINE[:ASYMmetrical]:UPPer<nr>:ENABle
CONFigure:SPECtrum:SWITching:EPSK:LIMit:LINE[:ASYMmetrical]:UPPer<nr>:ENABle
<Enable>
CONFigure:SPECtrum:SWITching[:GMSK]:LIMit:LINE[:ASYMmetrical]:UPPer<nr>
CONFigure:SPECtrum:SWITching:EPSK:LIMit:LINE[:ASYMmetrical]:UPPer<nr>
<Power level>, <Limit at 0.4 MHz>, <Limit at 0.6 MHz>, <Limit at 1.2 MHz>, <Limit
at 1.8 MHz>,<Enable>
Numeric Suffix Value range Description of parameters Def. value
<nr> 1 to10 Power level no.
Parameters Value range Description of parameters Def. value
<Enable>
<Power level>,
<Limit at 0.4 MHz>,
<Limit at 0.6 MHz>,
<Limit at 1.2 MHz>,
<Limit at 1.8 MHzl>,
<Enable>
ON | OFF
–100 dBm to 30 dBm
–100 dBm to 30 dBm
–100 dBm to 30 dBm
–100 dBm to 30 dBm
–100 dBm to 30 dBm
ON | OFF| DEFault Defined section on/off
MS output power for power level <nr>
Limit for the measurement point at:
0.4 MHz from carrier frequency
0.6 MHz from carrier frequency
1.2 MHz from carrier frequency
1.8 MHz from carrier frequency
Enable or disable limit check for power level
<nr>
ON
See be-
low
See be-
low
See be-
low
Description of command FW vers.
These commands activate and define limit lines for the spectrum due to switching measurement. V1.20
The value range for the individual power levels <nr> at the same frequency applies with the additional conditions
<PowerLevel(n+1)>
≤
<PowerLevel(n)> – 1 dB
and
|<PowerLevel(n+1)> – <Power-
Level(n)>|
≤
100 dB.
The limits are defined depending on 10 definable MS output power levels numbered by the numeric suffix <nr>
and four fixed frequency offsets from the carrier. The first parameter defines the power of level no. <nr>. For the
1
st
and the 10
th
level, limit values are entered: The levels then comprise all powers greater than or less than the
specified limits.
To switch one measurement point over all power levels on or off, please use the command
CONFigure:SPECtrum:SWITching:LIMit:LINE:ENABle[:UPPer]
To switch on or off the limit check altogether please use the command
CONFigure:SPECtrum:SWITching:LIMit:LINE:MODE[:UPPer] <Mode>
Default values for GSM400/850/900 (both modulation schemes):
Level <nr> Level / [dBm] 0.4 MHz / [dBc] 0.6 MHz / [dBc] 1.2 MHz / [dBc] 1.8 MHz / [dBc]
1
≥
39.0 –13.0 –21.0 –21.0 –24.0
2 37.0 –15.0 –21.0 –21.0 –24.0
3 35.0 –17.0 –21.0 –21.0 –24.0
4 33.0 –19.0 –21.0 –21.0 –24.0
5 31.0 –21.0 –23.0 –23.0 –26.0
6 29.0 –23.0 –25.0 –25.0 –28.0
7 27.0 –23.0 –26.0 –27.0 –30.0
8 25.0 –23.0 –26.0 –29.0 –32.0
9 23.0 –23.0 –26.0 –31.0 –34.0
10
≤
21.0 –23.0 –26.0 –32.0 –36.0
深圳德标仪器
135-1095-0799