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HP-8640B Signal Generator - OPT3, US $2700 – Picture 0
HP-8640B Signal Generator - OPT3, US $2700 – Picture 1
HP-8640B Signal Generator - OPT3, US $2700 – Picture 2
HP-8640B Signal Generator - OPT3, US $2700 – Picture 3
HP-8640B Signal Generator - OPT3, US $2700 – Picture 4
HP-8640B Signal Generator - OPT3, US $2700 – Picture 5
HP-8640B Signal Generator - OPT3, US $2700 – Picture 6
HP-8640B Signal Generator - OPT3, US $2700 – Picture 7
HP-8640B Signal Generator - OPT3, US $2700 – Picture 0
HP-8640B Signal Generator - OPT3, US $2700 – Picture 1
HP-8640B Signal Generator - OPT3, US $2700 – Picture 2
HP-8640B Signal Generator - OPT3, US $2700 – Picture 3
HP-8640B Signal Generator - OPT3, US $2700 – Picture 4
HP-8640B Signal Generator - OPT3, US $2700 – Picture 5
HP-8640B Signal Generator - OPT3, US $2700 – Picture 6
HP-8640B Signal Generator - OPT3, US $2700 – Picture 7

Hp-8640b Signal Generator - Opt3

US $2700

  • Ridge, New York, United States
  • Jan 29th
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HP-8640B SIgnal Generator with OPT 3 installed (Reverse Power Protection) This is a functional generator that has some cosmetic blemishes from age/use. The pictures show the physical condition. No dents or major bends but scratches and scuffs from being used for a time in a lab environment. The 2 inserts for the Output Level and Range knobs are missing but do not affect the operation of them at all. Electrically the following tests were made: Maximum output freq = 548 mHz   Minimum output freq = 442.5 kHz (will work for testing 455 kHz IF stages) The output level and frequency were measured with a Spectrum Analyzer and oven stabilized frequency counter over several points across the generators bandwidth. The first 3 harmonics were also measured. The following table lists the results: Generator Freq (mHz) Freq Error (Hz) Output Error (dB) Harmonics 548                                     -270                    -.8                  -50 /NA/NA 250                                    -140                 -.6               -44/-55/>-70 100                                  -60                 -.5                -52/-50/-56 50                                    -40                  -.3               -54/-55/-64 25                                    -20                 -.25             -58/-60/-65 10                                      -8                 -.1               -60/-60/-65 5                                        -4                +.15             -48/-58/-66 1                                         0                +.24             -52/-50/-66 .4425 (442.5 kHz)                   3                 +.3               -44/-41/-68 These measurements were made with the Phase Lock engaged and the output set to 0 dBm. One of the photos shows the analyzer trace of the output at 100 mHz and -10 dBm. The attenuator tracks the spectrum analyzer calibration down to the noise level of the analyzer. The 2 scope photos show the output with AM modulation at 100% and 50%. The second analyzer trace is the output with FM modulation using the internal 1 kHz tone and a 5 kHz deviation. Option 3 is installed for reverse power protection up to 50W. There are no returns on this item so please ask any questions before bidding. Thanks for looking 
Condition Used :
An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections.
Seller Notes “Good working order electrically. Has scuffs and scratches on the case (see photos). Small knob inserts missing from the output level and range knobs. Light engraving of a serial number on the case.”

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