Bunch of 54645D MSO scopes for sale BIN $150 or B.O. (in US) - Page 1
Forum section: electronics / general

author: Jwalling
author_rank: Unknown
timestamp: September 11, 2016, 11:57:51 am
content: http://www.ebay.com/itm/HP-Agilent-54645D-Portable-Digital-2-16-Channel-100MHz-Mixed-Signal-Oscilloscope-/401186561546?hash=item5d68951e0a:g:hMQAAOSwFdtXxZEZThere's nine of them at the moment.No affiliation. Seems like a decent price!

author: nctnico
author_rank: Super Contributor
timestamp: September 11, 2016, 02:54:53 pm
content: That looks like a very sweet deal to me!

author: Back2Volts
author_rank: Unknown
timestamp: September 11, 2016, 10:47:19 pm
content: I think the problem will be getting the probes cable for the 16 digital channels. So if one forgets about the digital channels, is the 54645D a good two channel 100MHz scope ?

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: September 11, 2016, 11:19:42 pm
content: 54645D is a prefectly good analogue scope - very responsive and a reasonable amount of memory.The cables aren't as simple as 40 way ribbon as they have attenuation built in, but for noncritical applications you can improvise something without too much difficulty if necessary.If you're on a budget these are a good bargain.

author: nctnico
author_rank: Super Contributor
timestamp: September 11, 2016, 11:23:59 pm
content: The probes cables are very universal and fit on many HP/Agilent/Keyisight models and they turn up on Ebay regulary. I have used this scope a lot for FPGA debugging 15 years ago.

author: helius
author_rank: Super Contributor
timestamp: September 12, 2016, 12:40:20 am
content: These 54xxx scopes bury in the fine print the single shot bandwidth, which is not very high. For the 54645D it is 50 MHz.

author: alank2
author_rank: Super Contributor
timestamp: September 12, 2016, 01:09:34 am
content: I ordered one. I've been wanting a CRT based digital scope for to put between my analog BK 20 Mhz and Rigol ones. Hopefully it will be cool!Does anyone have any information about the header/pinout/attenuation/part number for the logic part?Edit - wow that LA cable is not cheap for sure...

author: EEVblog
author_rank: Unknown
timestamp: September 12, 2016, 02:37:23 am
content: Great price.

author: alank2
author_rank: Super Contributor
timestamp: September 12, 2016, 03:41:42 am
content: Are there any calibration storage issues I need to be concerned about? The manual says it is stored in NVRAM. Is that battery backed up and I need to check a battery, etc.?

author: Brumby
author_rank: Unknown
timestamp: September 12, 2016, 04:00:31 am
content: Now, if it was in Australia for $150 AUD, I'd be sorely tempted... but freight and exchange rate kinda takes the edge off.

author: Monittosan
author_rank: Regular Contributor
timestamp: September 12, 2016, 06:34:23 am
content: Quote from: Brumby on September 12, 2016, 04:00:31 amWhat would you like to pay for one in Aus for? I have a few

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: September 12, 2016, 08:05:42 am
content: Service manual herehttp://instructor.physics.lsa.umich.edu/adv-labs/Tools_Resources/HP%2054600series%20oscilloscopes.pdfI think you can fully calibrate from the front panel

author: Brumby
author_rank: Unknown
timestamp: September 12, 2016, 11:59:33 am
content: Quote from: Monittosan on September 12, 2016, 06:34:23 amMy old 15MHz Hitachi still covers most of what I do, so this would be an opportunity purchase. As such, my budget would top out at $200 - and I'd still get in trouble.

author: EEVblog
author_rank: Unknown
timestamp: September 12, 2016, 01:13:34 pm
content: I can remember selling my 54622D for $2200 or so maybe 5 years back. I knew they would drop in value pretty quick.Got it for $50 from my former company

author: PaulAm
author_rank: Frequent Contributor
timestamp: September 12, 2016, 05:46:13 pm
content: It would have been a better deal with the pod, but that's still a good price.I have one of these and it's a pretty decent scope. It should have 1M of memory and it was one of the first with Megazoom.If you want fft, you'll need to get the gpib module that goes on the back. The ones I saw had the serial interface module, which is fine but it won't give you fft. Any of those modules will let you store multiple waveforms.The logic cable that's supposed to come with it splits into 2 8 channel pods. Somebody is selling one now on ebay for $255 and they can be pricey. On the other hand, they were common across HP's line and if you look hard, you might find a deal. I found a64620a54620a LA with the cable for $50.Somebody is selling a made-up pod using some HP pieces for around $59 right now, also on ebay.The pod has an R/C network in it and if you want to make up your own, it shouldn't be too bad. The specs in that are in the manual somewhere. The scope side connector is just a standard 2 row header, although it's recessed a bit.

author: alank2
author_rank: Super Contributor
timestamp: September 12, 2016, 10:30:18 pm
content: Quote from: PaulAm on September 12, 2016, 05:46:13 pmDoes anyone have any experience with this item? or a custom project someone around here has for the logic analyzer side?Tracking says I should have it Wednesday...

author: Back2Volts
author_rank: Unknown
timestamp: September 13, 2016, 12:38:52 pm
content: I could not resist! I just ordered one. There should be two left.

author: H.O
author_rank: Frequent Contributor
timestamp: September 13, 2016, 08:02:42 pm
content: One left now (no I didn't buy one).I'm sure it's great scope, especially for the price, but all I'm seeing is 100MHz bandwidth and 200MSa/s. Thank god it says HP on the sticker and not [insert far east brand here]....

author: korlatos
author_rank: Regular Contributor
timestamp: September 13, 2016, 08:26:04 pm
content: Quote from: alank2 on September 12, 2016, 10:30:18 pmYou can use a 01650-61607 cable and a 01650-61608 probe instead of the original 54620-68701 Digital Probe set. They can be found on the auction site for much less than the original. You need the 01650-61608 probe because it contains the required RC network, but the cable could be replaced by a standard 40-pin IDE ribbon cable if need be.

author: alank2
author_rank: Super Contributor
timestamp: September 13, 2016, 09:48:24 pm
content: Quote from: korlatos on September 13, 2016, 08:26:04 pmJust as a question - why the differences in these cables? I couldn't find 01650-61607 on eBay, but it looks like it is just a single cable that connects to the 01650-61608.I ended up ordering this off of eBay:http://www.ebay.com/itm/252507192693?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AITIt looks like it may have the 01650-61608 on the end of it perhaps?

author: korlatos
author_rank: Regular Contributor
timestamp: September 13, 2016, 11:22:32 pm
content: Yes, it looks like that's a 01650-61608 (a.k.a. E5383A) on the end of that cable, and he also uses the standard IDE cable as I mentioned. He uses the adapter boards because the IDE cable connectors can barely make a contact with the headers on the scope and the probe on their own.As far as I know, the only difference is that the original cable is configured as 2 x 8 bits, whereas the E5383A is 1 x 16 bits. Also, E5383A has an additional connection for the Clock signal on pin 3 - I believe that pin is not connected on the scope header.You can see both the cable and the probe in this auction:http://www.ebay.com/itm/HP-Agilent-1650A-1651A-Logic-Analyer-Probe-Lead-Set-01650-61607-61608-/232009766433?hash=item3604dc1621%3Ag%3Aht0AAOSwGXtXg-%7EC&nma=true&si=VJMCnwCk2Xa0ulC9dcqR5Dw44as%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557The nice thing about that cable is that the connectors have the proper depth (no need for adapter boards) and it is more flexible (and presumably more durable) than the IDE cable.

author: Back2Volts
author_rank: Unknown
timestamp: September 14, 2016, 02:29:10 am
content: Are this terminations related ?http://www.ebay.com/itm/Agilent-HP-1650-Logic-Analyzer-01650-63203-Male-40-to-20-Pin-Termination-Adaptor-/171717273842?hash=item27fb25a8f2:g:6U8AAOSwqu9VAaVu

author: Jwalling
author_rank: Unknown
timestamp: September 14, 2016, 06:16:23 pm
content: Six more just popped up from the same seller and the same terms.http://www.ebay.com/itm/HP-Agilent-54645D-Portable-Digital-2-16-Channel-100MHz-Mixed-Signal-Oscilloscope-/172342160122?hash=item282064aafa:g:YNkAAOSwAuZX2ZCf

author: alank2
author_rank: Super Contributor
timestamp: September 14, 2016, 06:40:29 pm
content: Mine just arrived - all initial tests work and it is nice and clean. Some of the encoders have some bounce back. I'll pull it apart and blow it out.

author: Jwalling
author_rank: Unknown
timestamp: September 14, 2016, 07:32:27 pm
content: Quote from: alank2 on September 14, 2016, 06:40:29 pmIf they're the same ones that are on the 545XX and 548XX and later scopes, a bit of exercise usually fixes them. No need to take apart.

author: djacobow
author_rank: Super Contributor
timestamp: September 14, 2016, 08:15:28 pm
content: Do these have the Tetris Easter egg?

author: alank2
author_rank: Super Contributor
timestamp: September 14, 2016, 08:21:39 pm
content: Mine has what looks like a centipede game in it.

author: Jwalling
author_rank: Unknown
timestamp: September 14, 2016, 08:27:28 pm
content: Quote from: alank2 on September 14, 2016, 06:40:29 pmOne would think I'd get a thanks now and then.

author: alank2
author_rank: Super Contributor
timestamp: September 14, 2016, 08:35:28 pm
content: Quote from: Jwalling on September 14, 2016, 08:27:28 pmIt is forthcoming for sure! THANK YOU for pointing out this auction, it is exactly what I was looking for!

author: Back2Volts
author_rank: Unknown
timestamp: September 16, 2016, 06:41:51 pm
content: I received mine yesterday and I have just opened the box and done a quick test with the cal pin. Cosmetically is in very good condition. This thing weighs much more than I expected, may be like two or three times the Tek 2235.Thank you Jwalling

author: nctnico
author_rank: Super Contributor
timestamp: September 16, 2016, 06:57:51 pm
content: Quote from: Jwalling on September 14, 2016, 08:27:28 pmFor tempting people into buying more stuff they don't need? I don't think so!

author: Jwalling
author_rank: Unknown
timestamp: September 16, 2016, 08:07:04 pm
content: Quote from: nctnico on September 16, 2016, 06:57:51 pmYou can never have too much stuff. Everything *is* needed.

author: alank2
author_rank: Super Contributor
timestamp: September 16, 2016, 09:28:55 pm
content: The cheaper logic probe from eBay arrived today and works great. I don't see any cross talk even though it doesn't have the mesh type ribbon cable.I went ahead and did the self calibration which was also easy to do.