HP 8923A DECT test set teardown - Page 1
Forum section: electronics / general

author: MetraCollector
author_rank: Regular Contributor
timestamp: December 30, 2012, 01:21:18 am
content: Greetings gentlemen !My passion consisting of spending money for useless machines brought me to this piece of equipment. It is Hewlett Packard 8923A DECT test set. It was useless for previous owner, so I got it for reasonable price, I expected a lot of RF stuff.Actually, I have no idea what can I use it for. Any hints ?I was looking forward to tear it down since I arranged the deal. Here it isOverviewCover offComplete dissassembly necessary to clean all the black soft dustPSU, huge blue elytes dissassembled due to manipulationTI DSPSome Altera stuffI was realy interested what it is inside of theseMmmmm, beautifull RF thingsInput circuitsOscillatorI am not sure about this because RF is not my domainAssembling together again. It is absolutely necessary to preciously mark screws where they belongs to. And then find out what is the possible order of assembly operations.I put groups of screws to seal with sticker and write the location of them on it.Wrong step. The backplate has to be placed from inside.I hope you like these pictures. You can see all of them I made here:https://picasaweb.google.com/100683312221737332313/HP8923A#Now I must find out where to put this instrument and if there is a opportunity to use it.

author: FenderBender
author_rank: Super Contributor
timestamp: December 30, 2012, 01:36:24 am
content: Wow. Pornographic.

author: peter.mitchell
author_rank: Super Contributor
timestamp: December 30, 2012, 04:44:58 am
content: Not only am i impressed by the equipment, but your flooring!

author: amyk
author_rank: Super Contributor
timestamp: December 30, 2012, 06:40:12 am
content: You can use it to test DECT equipment...A working one is worth quite a lot:http://www.ebay.com/itm/Agilent-8923B-DECT-Test-Set-/140426552279

author: SeanB
author_rank: Super Contributor
timestamp: December 30, 2012, 09:06:01 am
content: I can use it to check the pile of DECT phones I have.............

author: Unknown
author_rank: Unknown
timestamp: December 30, 2012, 10:49:03 am
content: Quote from: amyk on December 30, 2012, 06:40:12 amDon't confuse asking price with value. Have you seen any of these being sold? There are all kinds of digital communication testers available on the used market, mostly for obsolete standards, and they rarely sell for more than a few hundred dollars or so. Not much you can do with them unless you service (mostly obsolete) telephone equipment/networks.

author: TerraHertz
author_rank: Super Contributor
timestamp: December 30, 2012, 01:15:44 pm
content: In the second photo, is there something missing from the space behind the CRT?Looks like a couple of loose SMA connectors there.It's sure pretty. If you could get the service manual, some modules might be useful for more general use. But without circuit diagrams... good luck.

author: MetraCollector
author_rank: Regular Contributor
timestamp: December 30, 2012, 02:43:55 pm
content: The empty place behind the CRT module is supposed to be used for more options. There were no installed options when I opened the instrument.I found the manual for 8923B variant at the Agilent website, here:http://www.home.agilent.com/en/pd-1000002361%3Aepsg%3Apro-pn-8923B/dect-test-set?cc=SK&lc=eng