I lost my factory default. Could you write me some values? Shift+5 , pass: 882323 , I RF, YTO Tune, Max1stLO and Min1stLO hexadecimal values. Thanks your helps.
Max1stLO 0x0DA6
Min1stLO 0x0120
After a lot of reading on the internet and informing, I managed to replace a damaged 1st mixer of a Advantest R3131.
The original mixer (DMJ 4317-1) is no longer available but has found an excellent alternative by using an HSMS-2822.
Below you see two photos, one with the damaged mixer and a picture with the alternative mixer. Both photos were taken without any RF input. The differences are clearly perceptible.
Probably these diodes can also be used in other older Advantest Spectrum Analyzers, take advantage of them.
In any case, there is exactly the same mixer in the U4342 that I also have.
Hello Marcal,
Thank you very much for quick answer to my question.
Though I have used your values, the self test failed unfortunately.
My S/N of R3131 is 81780912.
Again thank you for your information.
konisan
import visa
rm = visa.ResourceManager()
print(rm.list_resources())
SA = rm.open_resource('GPIB0::8::INSTR')
print(SA.query("*IDN?"))
print('Start frequency = ' + SA.query("FA?"))
print('Stop frequency = ' + SA.query("FB?"))
SA.query("CONTS") # set sweep mode to normal and full
print('Sweep mode = ' + SA.query("SWM?"))
SA.query("TS") # reset and take sweep
SA.query("TM FREE") # set trigger to free run mode
print('What updates memory A at each sweep (0=write, 1=view, 2=blank) ? ' + SA.query('TA?'))
SA.query('AV') # Send A view command
# query to retrieve sweep
test = SA.query_binary_values('TBA?', datatype='H', is_big_endian=True, container=list, header_fmt='empty', expect_termination=True)
print(len(test))
print(test)
rm.close
('ASRL1::INSTR', 'ASRL3::INSTR', 'GPIB0::3::INSTR', 'GPIB0::8::INSTR')
ADVANTEST,R3131A,01780698,C00
Start frequency = +9.00000000000E+03
Stop frequency = +5.00000000000E+07
Sweep mode = 0
What updates memory A at each sweep (0=write, 1=view, 2=blank) ? 1
501
[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]