Re: Troubleshooting a 8591e with opt 130
¿ªÔÆÌåÓýHi, I did the same tests as you, results in the tables. ? I attached a picture showing the diodes of the first mixer, I did the repair of two Spectrum this year with damaged diodes, so the one with which I did the attenuator tests today. Maybe you should do this check. Ideally, if you had another measuring instrument that would allow you to know the RF level at the J3 connector of the first converter, you could know if the first converter is OK. ? correction at OFF SPAN 100kHz resBW 10kHz vidBW 100Hz MKR peak REFlevel at -10dBm ?
? Yves ? De?: [email protected] <[email protected]> De la part de jansen.marco90@... ? Continuing on the cal signal I checked the attenuator steps. After factor default and with correction off I found the following: At 300MHz: Att? |? Level 10? -22 20? -12 30? -21 40? -26 50? -19 60? -21 ? at 1500 MHz Att? |? Level 10? -28 20? -32 30? -27 40? -32 50? -30 60? -30 ? I'm guessing my 20db attenuator is toast but I would have expected to have seen the issue coming back at the higher attenuation levels. Could this behavior be caused by something else?? ? |
