Running the DSA815 from a battery (see also comment about other instruments)
Although the size and weight of the DSA800's make it attractive
for use in locations where there is no power, it suffers from the lack of an
internal battery. A Google search uncovers a raft of battery backed up power
supplies but the recommendation is that the DSA800's run from a supply that has
a sine output. For this report, a DSA800 was connected to such a supply, the ac
plug was pulled, and the Spectrum Analyzer's performance measured. For comparison,
the instrument's performance was also monitored as it was running from an ac
plug in the lab. The test results are
at the end of this report.
The first group of test parameters were:
Freq 50 Mhz
Bandwidth 100 Hz
Level -56 dBm
second group of test parameters were:
Freq 750 MHz
Bandwidth 100 Hz
Level -56 dBm
A Rigol DG4162 Function Generator was programmed to output a 50
MHz 0dBm signal and connected to the DSA800 input. The DSA800 was then
configured to measure the function generators phase noise.
Before removing the power to the Battery Backed Up supply, the
DSA800's tracking generator was turned on. After running for about 90 minutes,
the DSA Stopped Running.
The images below document that it would be very hard to
differentiate the power source option used with the DSA800 by looking at the
performance curves. It should be noted again that the Battery Backed Up Power
Supply (CyperPower 100PFCLCD) has been designed to output a sine wave.
Although not tested, it's likely the Power Supply could be used
with other Rigol Equipment. The Data Sheet for the Power Supply is at the end
of this document.
0.50 Mhz Test Battery Performance - is below
0.50 Mhz Test on LINE Power Performance - is below
750 Mhz Test Battery Performance - is below
750 Mhz On Line Performance - is below
Phase Noise test Battery Operated is below
Phase Noise Test Online is below
PFC SINEWAVE SERIES
The information below is © 2011 CyberPower
Systems (USA), Inc. All rights reserved. All other trademarks are the property
of their respective owners. CyberPower reserves the right to modify product
information or specifications without previous notice. The information
presented is accurate at the time of publication. 10-2011
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