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| Tektronix Prism 3002 & 3001 TekLink 174-1391-00 or 174-1152-00 cable data needed |
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| inotarobot:
Hi all, I am a newby here on this Forum, BUT not to owning Tektronix, having bought my first Oscilloscope a 465DM43 brand new about 1 year after they were released. I lost count how many Tek instruments / plugings I own. Well over 100 I think. Anyways I have a few Tektronix Logic Analyzer model -> Tek Prism 3002's a 3001 and a 3002E ( expansion chassis), plus a lot of probes, various acquisition modules, manuals and software on disks. Would love a GPIB comms module. One day one will turn up. What I don't have is any of the Teklink cables. It appears that the Prism 3002 to 3002E Teklink cable 174-1152-00 at 4ft and 174-1391-00 at 9 inches I can find NO wiring information to make either of these. Does anyone have it ? OR have one of the above cables they don't need ? Also does anyone have the cable info for the Tektronix video cable 174-1299-00 6ft that goes from the 3002 to an ega DB9 pin connector ? The chassis Teklink connector is a 26pin 1.27mm pitch one. sort of like those from scsi interface BUT not a SCSI cable. Picture following is my Tektronix Prism 3002 Logic Analyzer, Mainframe (top) and 3002E expansion box ( bottom). The communications link cable is the small socket on the right of both units. Its marked Teklink "out" on Mainframe, and Teklink "in" on the Expansion box. From the Prism Manual there were different cables lengths available. some info on the mainframe teklink with close up of the mainframe pin out of J910 But I cannot find the same info on the board in the expansion chassis, so I don't know if its a straight through cable or crossed over. Hope someone can help regards David Australia |
| inotarobot:
Hi all, Well I am beginning to think that the number of these Logic Analyzer expansion boxes sold with the teklink cable must have been very low. I have had zero response to my question in this or any of the other forums I have posted in. Guess over the coming month, I will try and find cheap another Prism 3002 or 3001 mainframe Main Board, and make up a 1 to 1 cable and just try it. Worst case is if I get the cable wron, then it could or would destroy the Custom ASIC's on both instruments. |
| inotarobot:
Well I just ordered a couple of the following 26 pin connectors to prepare to make a interconnect cable, between the 3001 main frame and my 3001E expansion frame. Its going to be hit and miss, since I have NO idea of the 3001E Texlink plug pinouts. Just wish I could get data on these TekLink 174-1391-00 or 174-1152-00 cables What I plan to do is make a short cable to break out measuring points, with the 3rd 26pin connector I bought. Then I plan to plug it into the 3001E and 1. using a multi-meter first, make note of the voltages of each pin. then 2. using an oscilloscope, I will probe each pin to see if there is any signals. 3. Once I have an idea if pins 15,12,11 on the 3001E, have no signals coming out, then I will feel comfortable to connect them to the same pins from the 3001 connector J910. 4. Then I will do the same measurements on pins 2,4,6,8, 26,20,22, 19 & 17. Then its a time to think and evaluate what I have measured before I try building a interconnect cable. |
| helius:
What I would probably do is to open the 3002E and check for continuity between pins "1, 3, 5, 7, 16" and a test point or capacitor near the input. It's very likely that all of those pins are separate wires inside the cable, but connect together again in the expansion box. That would reveal a great deal about the pinout of the wire. Pins 11 and 12 also must be twisted pairs for correct impedance (could be 120 ohm) and this suggests the cable may be made out of Spectra-Strip, which further constrains the pinout. If you can find a matched length signal pair in the 3002E it again is very likely to be this balanced signal. |
| inotarobot:
Appreciate the feedback. I must admit I was wondering why there would be 5volts out of J910 on pins 1,3,5,7 and 16, since the 3002E box also has ac mains input and thus its own switch mode PSU to provide the internal 5v. Then I started a spreadsheet to map the pins and see the +5v is intermixed with Sig1 -> 4 and between S-Clk and Systrig. So it may have been done to reduce noise or maybe each Sig has its own remotely powered isolated receiver gate in the 3002E. I see no mention of 0v dc on the J910. Just wish I could get a service manual for the 3002E (being the expansion chassis) !! Well the 3002 and the 3001 main frames, certainly uses the Teklink cable internally as well. So I think its also worth my looking at the way that cable structure is. |
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