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<DIV><FONT size=3>This is made by my company, fun device..</FONT></DIV>
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<DIV><FONT size=3>73 de Ulrich , N1UL </FONT></DIV>
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<DIV>In a message dated 9/26/2006 5:58:50 P.M. Eastern Daylight Time,
n9vv@sbcglobal.net writes:</DIV>
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style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2>Cool -
I/Q signal generation test gear :-)<BR><BR><URL:
<BR>http://www.rohde-schwarz.com/www/dev_center.nsf/frameset?OpenAgent&website=com&navig=/www/dev_center.nsf/html/nav,10,11,111,1117&content=/www/dev_center.nsf/html/afq100a
<BR>><BR><BR>Key Facts<BR><BR>Digital communications systems are rapidly
evolving today, calling for <BR>test equipment that can meet the new
challenges they present.<BR><BR>An important component of such test equipment
is a flexible baseband <BR>source that allows development and production tests
to be performed on <BR>state-of-theart receivers for a variety of standards. A
self-contained <BR>baseband source must fulfill a wide range of signal
requirements. Plus, <BR>it needs variable digital and analog outputs in order
to directly <BR>operate the DUT. Used as a modulation source for vector signal
<BR>generators, the R&S AFQ100A provides I/Q signals that offer all the
<BR>sophistication of modern communications standards for generating the
<BR>required RF signal.<BR><BR> * Broad scope of
applications<BR> o Variable memory
clock rate (1 kHz to 300 MHz) can be <BR>optimally adjusted to the useful
signal<BR> o Maximum I/Q bandwidth of
up to 100 MHz for an RF bandwidth <BR>of 200 MHz<BR>
o Long signal duration at 256 Msample or 1
Gsample<BR> o Analog I/Q outputs
(balanced and unbalanced) and optional <BR>digital outputs<BR>
o Variable output level at the analog
outputs<BR> o Multisegment waveform
reduces switching time between <BR>different signals; no reloading
required<BR> o Optimum memory use due
to integrated clock rate converter <BR>and memory granularity of 1<BR>
o Shiftable markers without disrupting and
recalculating the <BR>output signal<BR><BR> * Outstanding
signal quality<BR> o Excellent
spurious free dynamic range (SFDR) of typ. 83 dBc <BR>(1 MHz signal at 100 MHz
bandwidth)<BR> o Frequency response
typ. 0.05 dB across 100 MHz I/Q bandwidth<BR>
o Versatile impairments<BR>
- Settable skew with 10 ps resolution to allow exact
<BR>adjustment of different cable lengths<BR>
- Gain and offset for I and Q can set
independently<BR> - Phase
error<BR> o Loadable equalization to
compensate for external components <BR>such as I/Q modulators<BR>
(minimum frequency response in realtime
across all <BR>components involved)<BR>
o Adjustment of DC offsets by biasing the differential I/Q
<BR>outputs<BR><BR> * Connectors and operation<BR>
o Remote control via GPIB, USB and
LAN<BR> o User interface via external
monitor or Windows XP Remote <BR>Desktop<BR>
o R&S WinIQSIM™ for controlling the R&S AFQ100A and
<BR>generating test signals in line with different standards<BR>
o Direct control via MATLAB®<BR>
o USB connectors for USB equipment (keyboard,
mouse, memory
<BR>stick)<BR><BR>_______________________________________________<BR></FONT></BLOCKQUOTE></DIV>
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