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MOBILE COMMUNICATIONS MEASURING INSTRUMENTS

DIGITAL MODULATION SIGNAL GENERATOR

GPIB

MG3681A

250 kHz to 3 GHz

For Evaluating Next Generation Digital Mobile Communications Systems

The MG3681A uses a wideband vector modulator to output the high-accuracy, high-speed vector modulation signals that are required forR&D and manufacturing of digital mobile communications equipment and related devices. It covers the frequency band of leading mobile communications systems for the frequency range of 250 kHz to 3 GHz. It uses vector modulator to provide excellent frequency response,distortion and S/N ratio. It can perform accurate receiver sensitivitytest and transmitter adjacent channel leakage power test for high- speed modulation communications systems. Expansion units such as MU368040A CDMA Modulation Unit for modulation signals gen- eration of W-CDMA communication system can be installed on the seven expansion slots in the MG3681A. Various modulation signals can be generated with the expansion units and associated software. The MG3681A also has analog modulation functions such as AMand FM for testing of analog communications systems. In addition, its excellent signal purity and various functions such as memory and frequency sweep are useful as a general-purpose signal generator.

Features?

High-resolution setting of frequency 0.01 Hz and output level 0.01 dB

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30 MHz wideband and high-accuracy vector modulation

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Excellent adjacent channel leakage power ratio

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Various expansion units

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Excellent adjacent channel leakage power ratioThe typical adjacent channel leakage power ratio for W-CDMA system is –68 dBc/3.84 MHz and the secondary adjacent channel leakage power ratio is –75 dBc/3.84 MHz. Configuration of communication system software and expansion units

Communication systemApplicable softwareExpansion units PDCMX368011A PDC Software GSMMX368012A GSM Device Test SoftwareMU368010A TDMA Modulation Unit W-CDMA/3GPP (FDD)MX368041B W-CDMA Software cdmaOneMX368042A IS-95 Device Test SoftwareMU368040A CDMA Modulation Unit HSDPAMX368041B-11 HSDPA Signal Pattern cdma2000
® 1X
∗ 1 cdma2000
® 1xEV-DO
∗ 2 GSM/EDGE
∗ 3 MX368031A Device Test Signal Generation SoftwarePDC
∗ 3 , NADC
∗ 3 , PHS
∗ 3 ® ® MU368030A Universal Modulation Unit cdma2000 1xEV-DOMX368033A cdma2000 1xEV-DO Signal Generation Software PDC packetMX368034A PDC Packet Software PHSMX368035A PHS Signal Generation Software W-CDMA/3GPPcdma2000
® –MU368060A AWGN Unit

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1: Since coding format of the Reverse is performed, it is utilizable for receiver sensitivity test (RC1 & 3) in base station production.Since coding format of the Forward is not performed, it is not utilizable for receiver sensitivity test.

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2: For the Forward, only 16QAM modulation is available, 8PSK and QPSK modulation is not available. Since coding format of the Forward and the Reverse isnot performed, it is not utilizable for receiver tests.

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3: It is a continuous modulation signal based on the communication system.

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