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Ah, a TM501 and a TM502, in addition to a larger one to hold multiple plug-ins.? The wife is going to LOVE that idea!? Thanks for the inspiration, Dave!? LOL!? ? ? ? ?Jim?Sent from my T-Mobile 4G LTE Device
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-------- Original message --------From: Dave Daniel <kc0wjn@...> Date: 2/9/24 11:53 AM (GMT-08:00) To: [email protected] Subject: Re: [TekScopes] Extender Cables for TM500/5000 series - Alternatives? You'd probably want to use the smallest TM module in which? the plug-in will fit. That way one can get to three sides of the plug-on. I have a TM-501 dedicated for troubleshooting single-bay plug-ins. I'd want a two-bay module if I needed to troubleshoot a double-wide plug-in.DaveD> On Feb 9, 2024, at 14:36, Jim Ford <james.ford@...> wrote:> > ?Hmmmm.... The "remove the sides" trick probably won't work on a TM515 portable like mine, though.? Darn, I guess that means I'll have to scout for a TM506 or TM5006 or a smaller TM50X mainframe.? Not that I'm in a hurry to give up the portable, mind you!?????? Jim Ford Sent from my T-Mobile 4G LTE Device> -------- Original message --------From: Dave Daniel <kc0wjn@...> Date: 2/9/24? 7:45 AM? (GMT-08:00) To: [email protected] Subject: Re: [TekScopes] Extender Cables for TM500/5000 series - Alternatives? A couple of things come to mind.First, the question about where to find extension cables for Tektronix 7000 series scopes and TM-500/5000 power frames has come up many times in the past. I'd suggest that you check the message archives. Over the years, several list members have offered kits for building extension cables. I don't know if anyone is doing that at present.Second, the kits typically consist of a PCB for each end of the cable as well as pre-cut wires. The cable assembly is much more than just a cable, so the kits or pre-built cable assemblies, if one can find them, are more expensive than just a cable. Also, original extenders from Tektronix used to show up on ebay every once in awhile. Their rarity makes those expensive as well.It has been suggested that some troubleshooting can be done by just removing the side and bottom panels of a single-bay or two-bay power frame? in order to get (limited) access to a plug-in's board(s) without using an extender.DaveD > On Feb 9, 2024, at 10:19, Frank Mashockie <fmashockie@...> wrote:> > ?Hi y'all!? I'm currently working on repairing a CG5011 calibrator generator.? It has a very strange fault symptom affecting the DC frequency modes.? Almost looks like when in + or - DC mode, the signal is being blocked by a coupling capacitor.? It looks very similar to when you look at signals being AC coupled on your scope.? The signal will attempt to reach the DC Volt/div setpoint, and then collapse to ground.? It will do this for all the lower voltage ranges until I get to higher voltages (10V or greater).? So very strange!? > > I've tried checking the numerous troubleshooting trees in the CG5011 manual and it looks like I will have to take a closer look at some of the boards.? I'll need to remove them from TM5003 to do this, but I don't have any extender cables.? I was looking on eBay to see if any were available and I saw some listed for ~$100 each!? That is ridiculous for a cable.? Has anyone come up with alternative or DIY way to connect these boards out of TM5000?? Something that would be much cheaper?> > Any help would be greatly appreciated!? Thanks!> > -Frank> > P.S. Links to vids on my YT channel documenting this repair:> > Part 1 - First impressions/fixing the current loop - > Part 2 - Replacing the broken variable encoder/first example of DC mode issue - > Part 3 - troubleshooting the DC freq mode fault > > > > >> > > >
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