r&s®smj100a vector signal generator | features & benefits -九游官网下载

a context-sensitive help function supports intuitive menus. the r&s^®smj100a help function is particularly useful if you need information about the parameters available with different digital standards. each edit window offers a tooltip function that specifies the setting range of the selected parameter. if more detailed information is required, the help function comes in handy. it not only provides background information about various parameters, but also supports the programming of automatic test setup with remote-control commands. the help function also provides links to related topics.

another significant parameter is the error vector magnitude (evm), which is essential in module and receiver tests, where bit errors are measured on the dut. the better the signal quality of the generator, the greater the exactness in selecting the test criterion – a characteristic that pays off especially in production. what makes the r&s^®smj100a distinctive is that both excellent aclr and outstanding evm are provided without requiring any changes in the settings.

in addition to the main mobile radio standards, the r&s^®smj100a – because of its large bandwidth and sample frequency coverage – is ideal for important wireless network standards such as wlan ieee 802.11 and wimax ieee 802.16. here, too, the r&s^®smj100a’s evm capabilities underscore its standing as an all-purpose instrument. it also proves the excellent performance of the r&s^®smj100a with broadband signals, which is due to the high linearity of the baseband and the i/q modulator.

the flexible baseband generator in the r&s^®smj100a is the heart of the instrument. it includes a universal coder (for calculating signals in realtime) as well as an integrated arbitrary waveform generator with a memory depth of up to 64 msamples, sufficient even for long complex test signals. enhanced with a high system bandwidth of up to 80 mhz, the r&s^®smj100a can handle all current and future wireless applications.

in addition to the extensive functions in the mobile radio standards, the r&s^®smj100a also covers the wireless lan standards ieee 802.11a, ieee 802.11b and ieee 802.11g with complete channel coding.

the ieee 802.16 standard – also referred to as wimax – is of broad interest as a wireless bridge for the last mile. the r&s^®smj100a supports 802.16e, including channel coding. both versions, ofdm and ofdma, are included. the r&s^®smj100a offers various uplink and downlink duplex capabilities, including both fdd and tdd. the user interface provides separate operating menus for the ofdm and ofdma modes. ofdm has a defined fft length of 256, so that only one set of subchannels is used simultaneously; what’s of interest here are the different data bursts with the individual subcarrier modulations. on the other hand, ofdma has a considerably larger fft size of 2048, so that different subchannel groups can be assigned to different users, which is reflected in the subchannel map of the ofdma configuration.

front panel: in addition to a trigger input, there are also two marker outputs at the front panel, making lab setup simple. the trigger input allows the r&s^®smj100a to be involved in dut timing. the marker outputs offer different signals, depending on the standard. in gsm/edge, for example, slot or frame markers are available, in 3gpp fdd a radio frame marker.

remote control: the r&s^®smj100a can be remote-controlled both via the conventional iec/ieee bus and via the lan interface; due to its higher transmission rate, the lan interface yields advantages in speed. moreover, the lan allows remote operation via windows remote desktop.