Electronics > Repair
W&G sna-20/23 spectrum analyzer repair
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aseok:

--- Quote from: NIKGEROS on November 19, 2020, 11:14:17 am ---Hello everybody,

in case somebody could advise : I have a SNA-23 and facing BOOT problem. I use the disk but when the process is finished it keeps looping again asking for the disk.

thanks a lot,

Nikos

--- End quote ---
Hello
What is the version of your sna? what is main memory?
Qw3rtzuiop:

--- Quote from: aseok on November 19, 2020, 01:07:13 pm ---does 40 pin ide connect at the middle of 50 pin connector, symmetrically?

--- End quote ---

No. Take a look at that picture i posted. You need to connect it at the 44 pin side. Just leave the 4 power supply pins empty. The 4 power supply pins are on the left side.
aseok:

--- Quote from: kyndbo on December 29, 2019, 06:18:32 pm ---HI aseok,
Can I get a copy of your  compensation data floppy disks ?
I have a SNA 23 , but no boot disk, I have changed backup battery, but would like to try to boot from floppy disk,
to restore my data in B: drive ,
I woud like to share our findings with our analyzers, and solve them,

regards helge

kyndbo@gmail.com

--- End quote ---
Hi kyndbo
Which version is your sna? does it have dram module?
aseok:

--- Quote from: Qw3rtzuiop on November 18, 2020, 07:08:49 pm ---It is IDE. The spare pins are not connected or connected to the hdd jumpers.

--- End quote ---
which pins are 1 and 44?
aseok:
There is a project RASCSI that uses raspberry pi as scsi hard disk emulator and is originally written and tested for sharp x68000 & mac pcs. i wonder if we can use it with our SNAs.

https://github.com/akuker/RASCSI
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