Difference between revisions of "USRP"
From SpenchWiki
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(Power consumption) |
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| + | == Current Draw == | ||
| + | |||
| + | {| class="wikitable" border="1" | ||
| + | |+ Power consumption | ||
| + | |- | ||
| + | ! State || Consumption (mA) | ||
| + | |- | ||
| + | | Initial power-on || 670 | ||
| + | |- | ||
| + | | Post-flash || 1040 | ||
| + | |- | ||
| + | | Post-tune || 1080 | ||
| + | |- | ||
| + | | Streaming || 1165 | ||
| + | |- | ||
| + | | Software release || 265 | ||
| + | |} | ||
| + | |||
| + | * Cigarette lighter double adapter draws 20mA @ 12.0V, 32mA @ 13.2V | ||
| + | |||
== LO XO == | == LO XO == | ||
Revision as of 17:35, 23 May 2011
Current Draw
| State | Consumption (mA) |
|---|---|
| Initial power-on | 670 |
| Post-flash | 1040 |
| Post-tune | 1080 |
| Streaming | 1165 |
| Software release | 265 |
- Cigarette lighter double adapter draws 20mA @ 12.0V, 32mA @ 13.2V
LO XO
XO drift is shown by flat top of the green Peak Hold line. This visualises the 'max' of the peak that slowly moves left and right as the XO changes frequency (12 PPM). From this, one can deduce the oscillator (in-)stability.
The references is a pure sine wave @ 65MHz generated by an HP-8640B.
Notice that the width of the spectrum in the FFT Plot is very, very narrow, and the period of the I/Q waves in the Scope Plot indicate a very large period.
Kal was SNMP-enabled, and results were graphed relative to ambient temperature using Cacti:
