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 羅德&施瓦茨CMD65綜合測試儀

     品牌：R&S（羅德&施瓦茨）

型號：CMD65綜合測試儀

CMD65可靠性測量速度和性價比是使

一種測試設(shè)備在市場上獲得優(yōu)勢地位的關(guān)鍵性指標。

在DECT( 數(shù)字歐洲無繩) 無線通信網(wǎng)絡(luò)中大量的無線和固定站，

CMD65必須分享十分有限的頻率時間和空間資源。

因此只有制訂嚴格的標準或規(guī)范才能保證網(wǎng)絡(luò)正常有序的運轉(zhuǎn)。

另一方面標準又要求DECT系統(tǒng)以及系統(tǒng)使用的話機應(yīng)具有低廉的價格。

CMD65這一點導(dǎo)致設(shè) 備結(jié)構(gòu)復(fù)雜性和精度受到限制。

技術(shù)指標

Time and frequency reference
TCXO standard
Nominal frequency 10MHz
Temperfure effect(0 to 35℃) <1.5*10^-6
Aging <0.5*10^-6/year
OCXO option CMD-B1
Nominal frequency 10MHz
Temperatureeffect(0to 50℃)
Aging 1*10^-7
<5*10^-9/day or <2*10^-7/year
DECT signal generator specificaitons validfor N connector
Frequency 10 DECt chanels 0 to 9
Additional DECT channels -3 to -1,10 to 12and half channels
Level range -100 to -40dBm
Burst switch-off >30dB
Modulation GFSK(B*T=0.5)
DECT analyzer specifications valid for N connector
Frequency
Level(setting for external offenuation and expected powershall be matching same as signal generator
-10 to +30 to dBm) -65 to +30dBm(for level meter)
-30 to +30dBm(forbroadband FM demodulator and signalling),values shifted by about -40dB for input2
FM demodulator for TX postprocessing and analog output
Range 0 to 450kHz deviation
Resolution 1kHz
Level meter(transientresponse) for TX posprocessing and analog output
Range -65to 30 to dBm
Dynamic 70dB
Analog DECT ADPCM interface
Output balanced
Range 1V,300Hz to 3kHz
S/N+THD 50dB of full-range level
Input balanced
Range 50mV,300Hzto 3kHz
S/N+THD 50dB at full-range level
DC measurements
DC voltmeter 0to ±30V
DC ammeter 0 to ±30A
AF meter
Frequency range 50Hzto 10kHz
Input voltage 0.1mV to 30V
Load impedance 1MΩ
AF distortion meter
Frequency range 300Hz to 3kHz
Input voltage 100mV to 30V
Loadimpedance 1MΩ
AF counter
Frequency range 20Hz to 10kHz
Input voltage 10mVto 30V
rESOLUTION 1Hz
Load impedance 1mΩ
60MHz counter
Frequency range 10Khz to 60MHz
Input signal min:100mV;max:TTL signal
Resolution 1Hz
Load impedance 1MΩ‖100pF
AFgenerator
Frequency range 50Hzto 10kHz
Resolution 0.1Hz
Accuracy 0.05Hz
Output voltage 10μV to5V
Max.current 20mA
Source impedance <5Ω