Products > Test Equipment
Oscilloscope HP 54600A
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radiohomebrewer2000:
iMo,
I have created a new topic in the appropriate Ham Radio forum about my issue with a stable measurement of voltage and frequency.

https://www.eevblog.com/forum/rf-microwave/how-to-get-a-stable-measure-of-v-and-freq-using-an-oscilloscope-on-a-vfo/

- Daniel

radiohomebrewer2000:
iMo,
Do you have any suggestions on how to replace this Dallas memory module or where to find them?  Are they expensive?

It gets to a point where a question is asked - is it worth the money and time to do it?

I am thinking about giving this scope to my brother or niece and I do not want the scope to fail on them later.  Then again, they might not want it.  Same can be said about how some people look at the old Heathkit HW-101 transceiver - I could not even give it away to them...  They want the shiny new...   Yet, when someone offered me this same transceiver for free when I because a new ham, I pounced on it at the urging of other hams - take it...  And I am glad I did because I learned things from the old rig you could not learn from the newer rigs.


--- Quote from: iMo on March 14, 2024, 07:38:52 am ---The biggest issue of this scope is its Dallas 1220 battery backuped 16kB memory module.
It resides there for 33years already and keeps the calibration and various manufacturing settings, afaik. Needs to be replaced asap, otherwise the scope may die anytime.

--- End quote ---
iMo:
https://www.tindie.com/products/tebo/dallas-ds1220-replacement-without-battery-2/
radiohomebrewer2000:
iMo,

Thank you. 

If I get everything, the price is still cheap at US$18.50.  I can solder the header pins myself. 

The hard part is removing it and putting the new part in.  And without getting shocked by the CRT. 

But, how do you transfer the settings from the old part to the new part? 

Is there anything else I need to do?  Does the +5 power needed (I think) come from the scope PCB?  Or is this something else I need to figure out how to power it?  Sorry for all the dumb questions. 

Any links to good tutorials or videos would be good too.

I do see a lot of videos on YouTube on this topic.

Thanks again,
- Daniel
iMo:
When you read the stuff in my link above - the module has been specifically developed for his 546xx scope replacement(s)..

You have to de-solder the Dallas module from the pcb, read and store the data off the Dallas chip (you would need a programmer for it, there is a YT video on that - do search), then you have to program the data back into the new module, then to solder a DIL socket into the pcb, then put the new module into the socket..

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