I am experiencing dificulties with my Agilent 8561E
I am getting the following error codes-334 356 and 319.
I have tried using a waveform generator of different frequencies to see wht the spec-A displays. It only displays inputs ~1GHz and with a 2nd harmonic~30dB down. (input power is -10 to 0dBm) So it doesn't track. if the signal frequency changes to say 500Mhz or 3GHz, nothing is displayed.
All of the error codes have something to do with the 1st LO.
Error 334-LO AMPL 1st LO distribution amplifier is unleveled. The front panel LO OUTPUT must be terminated in a 50W load.
(It is terminated with the same 50ohm load it always had. I have ordered another one)
Error 356-SPAC CAL Sweep data problem finding "bucket 1" of the span accuracy calibration sweep.
Error 319-WARN COA The YTO coarse tune DAC is near its limits.
Any help is very much appreciated
I am getting the following error codes-334 356 and 319.
I have tried using a waveform generator of different frequencies to see wht the spec-A displays. It only displays inputs ~1GHz and with a 2nd harmonic~30dB down. (input power is -10 to 0dBm) So it doesn't track. if the signal frequency changes to say 500Mhz or 3GHz, nothing is displayed.
All of the error codes have something to do with the 1st LO.
Error 334-LO AMPL 1st LO distribution amplifier is unleveled. The front panel LO OUTPUT must be terminated in a 50W load.
(It is terminated with the same 50ohm load it always had. I have ordered another one)
Error 356-SPAC CAL Sweep data problem finding "bucket 1" of the span accuracy calibration sweep.
Error 319-WARN COA The YTO coarse tune DAC is near its limits.
Any help is very much appreciated
do you have the possibility to check if you have 300MHz ref out on the front panel at about the right powerlevel? You must check this with another instrument, not the faulty 8561E.
Also check if there are more errors since one error often give new and it's about to find the first error and often the others will be fixed when the first error is fixed. With "recal errors" you can schroll through the errors to see if there are any more errors reported.
You can check the 50ohm termination with a simple ohm-meter. If the reading is about 50ohm it'll be ok and I doubt that there is any problem with the termination especially if you haven't used this output.
Regards
Jens