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特点
·频率范围:5kHz~3GHz
·在一个单元中提供所有数字调制模式
·NOVEL菜单概念使操作简单
·无须外置调制和数据源
·RF,LF和电平扫描
·用户程控的数据序列和TDMA 结构
·超低射频泄露,高测量灵敏度
技术指标
FrequencyRange
SME02/03 5kHzto 1.5/3GHz
Resolution 0.1Hz
Setting time
afterIEC/IEEE-bus delimiter <10ms
aftertrigger pulse in list mode <500μs
Phase offset adjustable in steps of 1°
Reference frequency standard option SM-B1
Aging(after 30days of operation 1*10^-6/year<1*10^-9/day
Temperature effect(0 to 55℃) 2*10^-6<5*10^-8
Spectral purity
Spurious signals
Harmonics <-30dBc,M-26dBcwith SM-B3/-B8/-B9
Nonharmonics at >5kHz fromcarrier,f<1.5Ghz <-80dBc
SSBphase noise at 20kHz from carrier,1Hz bandwidth,FM/φM deviation <5% of max.deviation
<93.75 125 250MHz 0.5 1 2 3 6GHz
<-129 <-140 <-137 <-132 <-126 <-120 <-116 <-116dBc
Level frequency response at 0dBm 1dB,typ.0.3dB
Overload protection protects the unitfrom externally applied
RF power(50Ω source)and DC voltage,SME02
and 03:≤50W/35V;SME06:≤1W/0V
Simultaneous modulation anycombination of AM,FM(φM),pulse
modulation and
DM(DM=FSK,4FSK,FFSK,GFSK,GMSKor QPSK)
Frequency modulation withoption SM-B5
Operating modes internal,externalAC/DC,two-tone with
two separate channels FM1 and FM2
Maximumdeviation depending on carrier
frequency:500kHz(<130MHz)to4MHz (6GHz)
Setting error atAF=1kHz <3% of reading +20Hz
FMdistortion at AF=1kHz and 50% of max.deviation <0.5%,typ.0.05%
Modulation frequency range
for maximumdeviation DC to 500kHz
for25%of max.deviation DC to 2MHz
Carrier frequency offset with FM dependingon carrier frequency:
<50Hz(fc<93.75MHz)to <100/200Hz(fc
1.5/3GHz)+1%of deviation
Phase modulation withoption SM-B5
Operating modes internal,externalAC/DC,two-tone
with two spearate channel φM1 and φM2
Maximumdeviation depending on carrier
frequency:5rad(fc<130Mhz)to40rad(fc
6Ghz)
Setting errorat AF=1kHz and 50% of max.deviation
<1%
Modulation frequency range DC to 100kHz
Digital modulation withoption SME-B11,standard in SME03E
Modulation modes FSK,4FSK,FFSK,GFSK,GMSK,QPSK,л/4DQPSK
Operating modes internal,external
Internal data generator programming ofdata,level switching and
burst output
Storagecapacity 3*8192 bit
Frequencyaccuracy same as reference frequency
PRBS(psendo-random bit sequence) selectablelengths:29-1,215-1,220-1,
221-1or 223-1
FSK toCityuf,POSCAG,FLEX specs
Shift,filtered 4/4.5/4.8kHz
unfiltered 0.01 to 400kHz,maximum shiftdepending on carrier frequency
Datarate,filtered 0.05 to 90kbit/s
unfiltered 0.05to 1900kbit/s
FFSK toCityruf,POCSAG specifications
Shift 01.5/2/3/3.5/4/4.5kHz
Data rate 0.05 to 90kbit/s
4FSK to APCO25,ERMES,FLEX,MODACOM specifications
Shift 0.01 to 400kHz,maximumshift depending
on carrier frequency
Data rate 1to 24.3/27 to 48.6 kbit/s
GFSK toCT2,Ct3,DECT specifications
Shift 18/160/288kHzas well as non-standard shifts
Datarate 10 to 585/640 to 1170kbit/s
GMSK toCDPD,GSM1800,DSRR,GSM,MC9,MD24 to
MD192,MOBITEX8000 specifications
Data rate 2.4/3.6/4/4.8/6/8/9.6/10/12/16/19.2
/270.833/1000kbit/s
QPSK,л/4DQPSK to APCO25,MSAT,NADC,PDC,TETRA,TFTSspecifications
for f>3Ghz notspecified
Data rate 1 to 24.3/27to 48.6 kbit/s
Filter cos0.35/0.4/0.5/0.6
cos0.2/0.35/0.4/0.5/0.6
Amplitude modulation,pulsemodulation,internal modulation generator,LF gen-erator,multifunction generator,stereomultiplex signal.VOR modulation signal,ILS modulation signal,pulse generator andsweep see SMT,page 198
Remotecontrol IEC 625(IEEE 488)
Commandset SCPI 1992. |
