English - Rohde & Schwarz
English - Rohde & Schwarz
English - Rohde & Schwarz
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
FIG 2<br />
Multiband Series 4400 in its present<br />
confi guration covers the frequency range<br />
100 MHz to 512 MHz. Future modules<br />
with appropriate software will considerably<br />
extend this range – deploying the same<br />
platform<br />
FIG 1<br />
Thanks to their open concept, Series 4400<br />
radios are easily integrated into complex<br />
communication scenarios. They fully meet<br />
requirements for future-proofness, fl exibility<br />
and modularity<br />
Optimally integrated into<br />
modern networks<br />
Network integration is simplifi ed by a<br />
variety of standardized interfaces. The<br />
LAN hubs integrated into the radios<br />
provide for easy networking between<br />
installations and with other communication<br />
components. Plus, serial and ISDN<br />
interfaces are offered for controlling<br />
units from detached stations. A graded<br />
system of passwords for various user<br />
groups guards authorized access.<br />
Real plug&play<br />
To reduce the maintenance effort to a<br />
minimum, the individual modules are<br />
fully independent of each other. Meaning<br />
that if a module is replaced, neither<br />
hardware adjustment nor an exchange<br />
VLF HF VHF UHF SHF<br />
10 kHz 1.5 MHz 30 100 300<br />
512 3 GHz Frequency<br />
P 3 I<br />
Condensed data of Series 4400 (VHF/UHF models)<br />
Frequency range VHF/UHF 100 MHz to 512 MHz<br />
Output power VHF/UHF 30 W AM/100 W FM<br />
Operating modes VHF/UHF simplex, half-duplex, duplex,<br />
EPM: HAVE QUICK I/II, SATURN, SECOS,<br />
UHF SATCOM DAMA<br />
various combinations of these modes<br />
Number of parallel receiver/exciter lines 4<br />
Number of parallel EPM lines 2<br />
Remote-control interfaces LAN, RS-232-C/485, ISDN, DTMF<br />
Reader service card 166/02<br />
of platform software is required. The<br />
radios recognize the used hardware<br />
on booting and confi gure themselves<br />
appropriately.<br />
Multiline and multimode<br />
VHF(tact.)<br />
The multichannel radios of Series 400U<br />
already offered two parallel communication<br />
lines, with Series 4400 there<br />
are up to four. And the radios of Series<br />
4400 occupy only three height units –<br />
an innovation in surface radios.<br />
Two of these communication lines<br />
can be protected against jamming<br />
and interception for secure transmission<br />
(eg frequency hopping and<br />
encryption). Even waveform modifi -<br />
cations or third-party data radio protocols<br />
can be implemented line by<br />
First configuration<br />
level<br />
P 3 I<br />
line by simple software downloads.<br />
Voice is digitized internally and can<br />
be routed to one of the communication<br />
lines by an integrated digital<br />
switch. In this way the open concept<br />
of Series 4400 can implement digital<br />
voice and/or data communication.<br />
Multiband capability<br />
Articles<br />
Another outstanding feature of Series<br />
4400 is the possibility of extending<br />
to extra frequency bands (FIG 2). The<br />
limits of traditional transceivers (eg<br />
VHF/UHF or HF) have been done<br />
away with. Thanks to the multiband<br />
capability of Series 4400, rigid assignments<br />
to a certain application or frequency<br />
band are a thing of the past.<br />
Michael Fraebel; Robert Vielhuber<br />
News from <strong>Rohde</strong> & <strong>Schwarz</strong> Number 166 (2000/I) 9
Change language