特點(diǎn)
·是測(cè)量GSM及GSM1800的緊縮式單元
·通過RS232，IEC/IEEE遠(yuǎn)控
·前面板有多功能連接器
·話音編碼器/可被集成
·可選擇安培表和伏特表
·高敏感度二級(jí)RF輸入
技術(shù)指標(biāo)
| RF generator | same as CMD52,but | |
| Frequency range | GSM900 band | 935.2 to 959.8 MHz |
| GSM1800 band | 1805.2 to 1879.8 MHz | |
| GSM1900 band | 1930.2 to 1989.8 MHz | |
| Output level | RF IN/OUT | -35 to -120 dBm |
| OUT 2 | +11 to -77 dBm | |
| RF generator2 | same as RFgenerator 1, but | |
| Max.outputlevel (RF IN/OUT) | -37 dBm(RF OUT 2:+9 dBm) | |
| Peak power meter(RF IN/OUT) | ||
| Frequencyrange | 800 to 1000 MHz | |
| 1700 to 1900 MHz | ||
| Measurement range/resolution | ||
| GSM900 band | 0 to 47 dBm/0.1 dB | |
| GSM1800/1900 | 0to 33 dBm/0.1 dB | |
| VSWR | ≤1.3 | |
| Phase and frequency error | ||
| measurement | with option CMD-B4 | |
| Frequency range | GSM900 band | 890.2 to 914.8 MHz |
| GSM1800 band | 1710.2 to 1784.8 MHz | |
| GSM1900 band | 1850.2 to 1909.8 MHz | |
| Level range | ||
| RF IN/OUT | GSM900 band | 0 to 47 dBm |
| GSM1800/1900 | 0 to 33dBm | |
| RF IN 2 | -60 to 0 dBm | |
| Burst power measurement | withoption CMD-B4 | |
| Frequency range | GSM900 band | 890.2to 914.8 MHz |
| Frequency range | GSM1800band | 1717.2 to 1784.8 MHz |
| GSM1900 band | 1850.2 to 1909.8MHz | |
| Reference level range | ||
| RF IN/OUT | GSM900 band | 10 to 47dBm |
| GSM1800/1900 | 0 to 33 dBm | |
| RF IN 2 | -37 to 0dBm | |
| High-dynamic burst ahalysis | withoption CMD-B42 | |
| Dynamic rangeMeasurementlinit | >72 dB | |
| RFIN/OUT | GSM900 band | <-36dBm |
| GSM1800/1900 | <-48 dBm | |
| RF IN 2 | GSM900 band | <-83 dBm |
| GSM1800/1900 | <-85 dBm | |
| AFgenerator | option CMD-B41 | |
| Frequencyrange/resolution | 50 Hz to 10 kHz/0.1 Hz | |
| Frequencydrift | same as tiomebase+half resolution | |
| Voltage range/resolution | 10μV to 5V/10μ(1%) | |
| Distoution | ≤0.5% | |
| AF voltmeter | ||
| Frequencyrange | 50 Hz to 10 kHz | |
| Measurementrange/resolution | 0.1 mV to 30V/100 μV(1%) | |
| Distortionmeter | ||
| Frequency range | 300 Hz to 3 kHz | |
| Input voltage range/resolution | 100mV to 30 V/0.1% | |
| Inherent distortion | ≤0.5% | |
| AF counter | ||
| Frequencyrange /resolution | 20 Hz to 10 kHz/≤1 Hz | |
| Input voltage range | 10 mV to 30 V | |
| IFcounter | ||
| Frequency range/resolution | 10kHz to 60 MHz/1 Hz | |
| Input sigmal | min:100mV;max:TTLsignal | |
| Interfaces | ||
| IEC/IEEE-Buslnterface | option CMD-B61 | |
| IEC625-1(IEEE488),SCP-compatible | ||
| Other interfaces | RS-232-C,Centronics | |
| Reference Frequencylnputs/Outputs | option CMD-B3 | |
| Synchronizationinput | ||
| Frequency (selectable) | GSMbit clock (270.8 kHz),2×GSM | |
| bit clock,4×GSM bit clock 16×GSM | ||
| bit clock ,1to 13 MHz in 1 MHz | ||
| steps 2.048 MHz,26,39,52 MHz | ||
| lnputsignal | min 0 dBm;max:TTL signal | |
| Synchronizationoutput 1 | ||
| Frequency | 10 MHz with internalreference or frequency at synchronization input witn external frequency | |
| Input signal | TTL signal,Zout=50Ω | |
| Symchronization output 2 | ||
| Frequency(selectable) | GSM bit clock ,2×,4×,16×GSM bit clock,1,2,4,or 13 MHz | |
| Input signal | TTL signal ,Zout=50Ω | |
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