Products > Test Equipment
Advantest R3477 9kHz to 13GHz spectrum analyzer
nctnico:
Both traces are averaged 10 times but the picture shows measurements from two different sources.
Wuerstchenhund:
--- Quote from: nctnico on August 19, 2016, 06:16:05 pm ---The R3477's manual doesn't specify the phase noise (at least not directly in dBc).
--- End quote ---
Apparently it's -100 dBc/Hz (10kHz offset):
https://www.custom-cal.com/ModelInfo.aspx?kn=1157&m=ADVANTEST_R3477&srv=Calibration
--- Quote ---I think it is needless to say the E4421B's output is noisy indeed but that may be caused by my self made output amplifier.
--- End quote ---
Why don't you just use your 10MHz reference as input signal? Rb references and a good OCXO has a much lower phase noise than a vector RF generator like the HP ESG.
dschiedsch:
Hello ntcnico.
I grabbed one of these analyzers from ebay as well.
Working fine but I found out that the calibration above 3.5GHz is off.
I guess the cal for the YIG Filter is not good anymore. (Tested against a RS-signal generator)
I think one can calibrate this through the service menu. However I also don't have the password.
Did you have any success finding the password on the flash disc?
regards
gernot
nctnico:
I already posted it earlier:
--- Quote from: nctnico on August 15, 2016, 03:03:54 pm ---The code to enter the service mode: 17320504
--- End quote ---
Use at your own risk though! I'd check if there isn't some frequency compensation enabled in one of the many menus.
dschiedsch:
Hi
yeah thought about that and tried to put everything back to default
also do you know if the calibration is stored on the disk?
if yes then a backup of the disk should minimize the risk of bricking the device
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