The EXA and MXA is Agilent first major push into
the use to a software define instruments where
the BWO and sweep circuits are replaced with high
speed digitizers and a block convertor. You would
use a EXA or MXA in a similar fashion to that of
the ESA or PSA (thier flagship swept spectrum analyzers).
A software defined instrument used in the format
as a spectrum or vector analyzer has been around
for over ten years, but most TSCM people could
not justify paying $140,000 for a highly fragile,
75 pound instrument. The big benefit of a
software defined instrument is that once you
split the incoming signal into a I and Q signals,
and then digitize them the kinds of measurements
you can make with them is almost limitless.
For example you can display a segment of the RF
spectrum in a frequency v. amplitude as a
conventional spectrum analyzer display, or as a
frequency v./ time in several different formats,
or as a phase or constellation display, actual
data display, chips, or other data inside the signal.
As a TSCM instrument the software defined
instrument is quite valuable in capturing data
bursts where you set up on a set of frequencies
that you know that a bug is using, and you
capture the spectrum only when that band lights up.
For example, in September/October 1999 I
purchased two Tektronix 3086 Real Time Spectrum
Analyzers, and mounted them in a shock mounted
anti-vibration Hardigg rack as they were not
suitable for field use due to their construction
and special measures had to be taken to protect
them. These instruments were the very first
widely produced software defined instruments and
what you got was a Windows 95 PC with a modest
hard drive, multiple serial ports, digitizer
boards, down converters, etc. The actual digitize
bandwidth was 30 MHz, and with a little mod you
could tweak this up to just over 100 MHz of
bandwidth. What this means is that if anything at
all pops up on the air within this bandwidth the
instrument will capure it without regard for how
long the signal was present, so in the case of a
burst device that is only in the air for a few
milli-seconds every couple of hours these RTSA's
will capture it, albeit with a moderately narrow
bandwidth. By using two or more instruments you
can monitor two or more times as much RF real
estate, but you are still restricted to the
"bandwidth" of the instruments so that even if
you have only of the newer RTSA that goes up to
8.5 GHz you still can only watch 30 MHz or so at
a time (up to 120 MHz if you are clever with equipment mods).
If you are stalking digital signals that are only
present for short times, or signals that create
only a very small elevation of the noise floor
these types of instruments are invaluable, and
since they have been around for the last decade
the designs have become much more refined, and
the equipment reduced in size and more reliable..
-jma
At 10:29 AM 11/1/2007, rogelio villarreal wrote:
</pre>
<blockquote type="cite">
<pre wrap="">COULD YOU TELL ME IF THIS WOULD BE OF USE IN SWEEPS?
pERHAPPS THIS INFORMATION COULD BE OF INTEREST TO THE
GROUP
SALUDOS
ROGER in Mexico
Signal analyzer sets new performance/cost standard in
signal analysis
Fast, Low-Cost Signal Analyzer
Claimed to make signal measurements 3× faster than
competitive models, an economy-model signal analyzer
targets design troubleshooting, complex signal
analysis, and productivity gains. The analyzer uses
vector signal analysis software to perform a wide
range of measurements in an open Window XP
Professional OS. Functions can be accessed with a USB
keyboard/mouse and on the front panel
Santa Clara, Calif. — Agilent Technologies Inc. says
its EXA signal analyzer is the industry's fastest
economy-class signal analyzer, providing engineers
with the capabilities to troubleshoot new designs,
increase manufacturing throughput, or analyze complex
and time-varying signals.
At a lower performance point than Agilent's MXA signal
analyzer, the EXA integrates the same broad range of
standards-based measurements with Agilent's 89600
vector signal analysis (VSA) software in a single
instrument. In addition to the use of an open Windows
XP Professional operating system, the EXA also
provides an advanced signal analysis user interface.
All measurement features and functions are intuitively
grouped and accessible from the front panel or via a
USB keyboard and mouse.
The EXA signal analyzer supports multiple frequency
ranges from 9 kHz to 3.6, 7.0, 13.6 and 26.5 GHz, an
internal fully calibrated pre-amplifier option up to
3.6 GHz, and standard analysis bandwidths of 10 MHz.
This fully scalable functionality is complemented by
EXA's +13 dBm third-order intercept, -146 dBm/Hz
displayed average noise level (without pre-amp) and 66
dB W-CDMA ACLR dynamic range, as well as 0.4 dB total
absolute amplitude accuracy, which is made possible by
the all-digital, 14-bit ADC IF section. The dynamic
range is maximized with an optional 2 dB mechanical
step attenuator over the full frequency range and for
manufacturing offers an optional 1 dB electronic
attenuator to 3.6 GHz.
Agilent said a breakthrough characteristic of the
Agilent EXA is its intrinsic speed, unprecedented for
an economy signal analyzer, which allows measurements
up to 300 percent faster than other economy-class
signal analyzers. The EXA returns a marker peak search
result in less than 5 ms, local updates in less than
10 ms, and remote sweep and transfer (via GPIB) in
less than 12 ms. Measurement mode switching speeds are
typically less than 75 ms. This speed enables a fast
and seamless change between WiMAX, W-CDMA,
HSDPA/HSUPA, GSM/EDGE, phase noise measurements, and
89600 VSA software.
Optional measurement application software provides
preconfigured test routines for GSM/EDGE, 802.16e
Mobile WiMAX, W-CDMA, HSDPA/HSUPA, and phase-noise
applications. Running the Agilent 89600 VSA software
application in the EXA enables advanced signal
demodulation analysis and troubleshooting of more than
50 demodulation formats including 2G, 3G, 3.5G, WiMAX,
WLAN and Private Mobile Radio.
The EXA also includes a comprehensive set of standard
one-button-power measurements for characterizing
signal quality. These include ACPR, Channel Power,
Occupied Bandwidth, Spectrum Emissions Mask, CCDF,
Burst Power and Spurious Emission. It's fully
compliant with the LXI Class-C specification.
Connectivity is possible via 100 based-T LAN, GPIB and
seven USB 2.0 ports.
Pricing:
• N9010A-503 (Frequency Range, 9 kHz to 3.6 GHz):
$16,900
• N9010A-507 (Frequency Range, 9 kHz to 7.0 GHz):
$25,900
• N9010A-513 (Frequency Range, 9 kHz to 13.6 GHz):
$30,900
• N9010A-526 (Frequency Range, 9 kHz to 26.5 GHz):
$35,900
• N9010A- FSA (Fine step attenuator): $1,000
• N9010A-PFR (Precision Frequency Reference): $2,000
• N9010A-EA3 (Electronic Attenuator, 3.6 GHz): $3,000
• N9010A-P03 (Preamplifier, 3.6 GHz): $1,500
• N9010A-CPU (Instrument Security, additional
CPU/HDD): $4,000
• N9068A (Phase Noise Measurement Application): $4,700
• N9071A (GSM/EDGE Measurement Application): $6,000
• N9073A-1FP (W-CDMA Measurement Application): $7,400
• N9073A-2FP (HSDPA/HSUPA Measurement Application):
$4,300
• N9075A (802.16 OFDMA Measurement Application):
$10,000
• 89601A (Vector Signal Analysis software -89600):
$10,100
Product information: N9019A
Agilent Technologies Inc., 1-800-829-4444, item number
8155, <a class="moz-txt-link-abbreviated" href="
http://www.agilent.com">www.agilent.com</a>
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
<a class="moz-txt-link-freetext" href="
http://mail.yahoo.com">
http://mail.yahoo.com</a>
</pre>
</blockquote>
<pre wrap=""><!---->----------------------------------------------------------------------------------------------------
World Class, Professional, Ethical, and Competent Bug Sweeps, and
Wiretap Detection using Sophisticated Laboratory Grade Test Equipment.
----------------------------------------------------------------------------------------------------
James M. Atkinson Phone: (978) 546-3803
Granite Island Group Fax: (978) 546-9467
127 Eastern Avenue #291 Web: <a class="moz-txt-link-freetext" href="
http://www.tscm.com/">
http://www.tscm.com/</a>
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</pre>
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