HP 1664A Logic Analyser - Page 1
Forum section: electronics / testgear

author: slipalong
author_rank: Newbie
timestamp: March 23, 2020, 10:40:04 am
content: Hi Guy's,Am in the process of fixing up a older 1995 CNC machine and seem to have a problem with the interface between the CPU cards and the servo drives.Have tried troubleshooting with an analogue scope, but not happening. So, I had a look on eBay and picked up a cheap logic analyser. It arrived this morning and powers up ok, but there are no probes to go on the end of the cables :-(The plugs are simple 20 way IDC so that's no problem, but Im going to need to make up some small boards to convert from 20 way IDC Male connectors to DuPont.Anybody know if the probe adaptors are active or passive? Pinout of the 20 pin connector would also be useful.Cheers,Ian.

author: TK
author_rank: Super Contributor
timestamp: March 23, 2020, 12:53:35 pm
content: There is a resistor - capacitor network at the end. You can buy the probes on eBay.Google: Keysight Technologies Probing Solutions for Logic Analyzersor look for Document 5968-4632.pdf

author: slipalong
author_rank: Newbie
timestamp: March 23, 2020, 03:42:18 pm
content: Thanks! Found a E5383A 17-channel probe lead set on eBay for £400. Thats 4 times want I paid for the analyser. Think I will build then on some Vero board.

author: Stray Electron
author_rank: Super Contributor
timestamp: March 23, 2020, 04:01:49 pm
content: Quote from: slipalong on March 23, 2020, 03:42:18 pmThat's normal. NEVER buy a LA or other instrument that uses special probes unless the probes are included with it.

author: TK
author_rank: Super Contributor
timestamp: March 23, 2020, 04:21:40 pm
content: There are eBay listings selling these probes for around $20 each or $50 for a 3-pack. I am not affiliated to this particular seller:https://www.ebay.com/itm/Lot-of-3-HP-Agilent-Pod-Data-Logic-Analyzer-Test-Cable-Lot-D440/321695019970

author: gslick
author_rank: Frequent Contributor
timestamp: March 23, 2020, 05:40:58 pm
content: An HP 1664A is only a 34-channel logic analyzer so you only need two of the flying lead sets.If someone needs a full set of 4 or 6 flying lead sets with all of the accessories sometimes the best deals can be found by searching for "(16550, 16555, 16715) 68702" on eBay.If you find one of those that is complete as new, the 16555-68702 and 16715-68702 sets should contain 4 flying lead sets, with 20 grabbers (5090-4833) per each lead set (80 grabbers total), 5 ground extension leads (5959-9334) per each lead set (20 total), and a single set of 5 replacement leads (5959-9333). The 16550-68702 version has 6 sets of each instead of 4. If you add up the asking prices for all of the accessories you would pay a lot more than for a complete kit.For example this seller in the US has 40 16715-68702 kits listed at $75 or Make Offer and from the photos they appear to be complete with all accessories:https://www.ebay.com/itm/Agilent-16715-68702-Accessory-Pods-Kit-for-Logic-Analyzer/162009221379If you keep looking and waiting sometimes those complete kits appear at lower prices, as is the case with most items on eBay.

author: james_s
author_rank: Super Contributor
timestamp: March 23, 2020, 07:14:24 pm
content: There are a lot more analyzers around than the probes, thus the analyzers are worth almost nothing, most of the value is in the probes. I paid $25 for my HP logic analyzer and spent $250 collecting a complete set of probes and grabbers.