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Фрагмент инструкции
When both the MU368040A CDMA Modulation Unit that installed MX368041B W-CDMA Software is mounted, one MG3681A can be utilized as a wanted signal source (W-CDMA modulating), an interfering signal source (W-CDMA modulating, CW) and an AWGN source. Furthermore, since mixed Uplink W-CDMA signal and AWGN internally can be outputted by setting the C/N in MX368041B, the base station receiver dynamic range test is realizable by one MG3681A. When both the MU368030A Universal Modulation Unit that installed MX368033A CDMA2000 1xEV-DO Signal Generation Software or MX368031A Device Test Signal Generation Software is mounted, one MG3681A can be utilized as a wanted signal source (CDMA2000 modulating), an interfering signal source (CDMA2000 modulating, CW) and an AWGN source. Furthermore, when both MU368040A CDMA Modulation unit are also mounted, since mixed CDMA2000 signal and AWGN internally can be outputted by setting the C/N in MX368033A or MX368031A, the base station receiver dynamic range test is realizable by one MG3681A. • Configuration of Communication System Software and Expansion Unit Expansion units Communication system Applicable software Expansion unit W-CDMA (3GPP) CDMA2000 —— MU368060A AWGN Unit The expansion unit is installed in the MG3681A Digital Modulation Signal Generator mainframe. 2 Application Examples • 3GPP Recommended Dynamic Range and Interference Tests This test does not require a separate signal generator for both interfering signal and AWGN. W-CDMA wanted signal generator MG3681A Digital Modulation Signal Generator MU368040A CDMA Modulation Unit MX368041B W-CDMA Software MG3681A Digital Modulation Signal Generator MU368040A CDMA Modulation Unit MX368041B W-CDMA Software MU368060A AWGN Unit Combiner (MA1612A, etc.) Interfering signal (W-CDMA modulation) Wanted signal (W-CDMA modulation) Wanted signal (W-CDMA modulation) Wanted signal (W-CDMA modulation) AWGN Interfering signal (CW) DUT (receiver, etc.) Interfering signal and AWGN generator • Dynamic Range Test by mixed Uplink W-CDMA signal and AWGN internally Since AWGN is mixed digitally, the C/N ratio accuracy and stability are excellent. Signal generator for wanted signal and AWGN AWGN Wanted signal (W-CDMA modulation) DUT (receiver, etc.) MG3681A Digital Modulation Signal Generator MU368040A CDMA Modulation Unit MX368041B W-CDMA Software MU368060A AWGN Unit 3 Specifications Frequency range 100 to 3000 MHz RF output Level range: –143 to –3 dBm (total power at W-CDMA and AWGN internal addition.1) Level accuracy: Within ±3.0 dB compared with CW output level. .1920 to 2170 MHz, noise bandwidth: 7.68 MHz, –3 dBm, ALC on, continuous mode: off Noise Probability distribution: Gaussian distribution Crest factor: .14 dB (1920 to 2170 MHz, –3 dBm, ALC on, continuous mode: off) Bandwidth: 1.5 to 16 MHz .2 Calculated bandwidth: 10% to 80% of noise bandwidth setting In-band power calculation accuracy (Accuracy of in-band calculated power ratio to total power of RF output) : . 18° to 35°C ±0.6 dB (noise bandwidth setting: 1.5 to 4 MHz, typical) ±0.6 dB (1920 to 2170 MHz ,noise bandwidth setting: 4 to 8 MHz) ±2.0 dB (1920 to 2170 MHz ,noise bandwidth setting: 8 to 16 MHz) C/N setting range.1: –30.0 to –20.0 dB (resolution: 0.2 dB), –19.9 to –8.0 dB (resolution: 0.1 dB) .1: AWGN internal addition function can be used only at uplink when the MU368040A and MX368041B are both installed in the MG3681A. .2: Set a chip rate of x 1.5 or x 2 at AWGN internal addition Ordering Information Please specify the model/order numbe...
Эта инструкция также подходит к моделям:Электрогенераторы - MG3681A (268.99 kb)