FS (EU) Agilent 54622D

[lscw]

I'm interested. PM sent

[PlaneSailing]

Recently bought an Agilent 54622D on Craigs List, can you please tell me which quieter fan you installed, and any issues.
I love the scope - the fan noise though is too much - thanks.

Commissioning my "new" 54622D included installing a leaded C123A 3V lithium cell from a broken smoke detector.
The intensity knob was broken, a 3/8" length of 3/8" diameter oak dowel screwed and epoxy glued into the broken end of the control rod, covered by a nylon cap restored nice operation and decent cosmetics per picture.
Upgraded the firmware to latest A.02.31, and made a PMP (Poor Man's Pod) from a 40 way computer PCB to hard drive/floppy/DVD ribbon cable.  A bunch of 91k Ohm
series resistors, and a green LED powered off the 5V from the 54622D to confirm pluged in correctly. Not the greatest signal integrity, it crosstalk's onto other digital channels, but it's fine for the few MHz signals I am interested in when working on old CD players etc, hope attached pictures are of interest.

[free_electron]

These are really good scopes with quality oozing out all over. I have one of these with latest firmware installed you get all options enabled. Good scope  - way better than  cheap scopes from China.  Only if it had USB it would be perfect.   I used serial to save images.

floppy emulator ...

[AVGresponding]

Recently bought an Agilent 54622D on Craigs List, can you please tell me which quieter fan you installed, and any issues.
I love the scope - the fan noise though is too much - thanks.

Commissioning my "new" 54622D included installing a leaded C123A 3V lithium cell from a broken smoke detector.
The intensity knob was broken, a 3/8" length of 3/8" diameter oak dowel screwed and epoxy glued into the broken end of the control rod, covered by a nylon cap restored nice operation and decent cosmetics per picture.
Upgraded the firmware to latest A.02.31, and made a PMP (Poor Man's Pod) from a 40 way computer PCB to hard drive/floppy/DVD ribbon cable.  A bunch of 91k Ohm
series resistors, and a green LED powered off the 5V from the 54622D to confirm pluged in correctly. Not the greatest signal integrity, it crosstalk's onto other digital channels, but it's fine for the few MHz signals I am interested in when working on old CD players etc, hope attached pictures are of interest.

You're probably better off asking about this in the Test Equipment sub-forum.

However fwiw, any decent modern fan is probably an improvement in noise and airflow, Noctua are well known for example. Just make sure you pick one with the same voltage and physical size, should be straightforward enough.

[EHT]

I'd be interested to hear back what you find about replacement fan. It does seem quite high airflow but as AVGresponding says, I suppose a new one will be better even if the airflow is matched.

[SilverSolder]

I won't be at the location where my scope is for a few weeks.  Then, I will let you know what fan I used, so you have an example.

One important modification is to rubber-mount the fan, since the original mounting allows the vibrations to be conducted into the entire chassis and enclosure...