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I was fortunate to find an NOS replacement for one drum , 105-0509-00. That allows me to experiment with the bad unit; however, I am not sure where to start. One thought is to find a compatible resin,

Last time I did serious IEEE programming was writing a driver using PLM-86 for one of the competitors in the MATE program.? That was a LONG time ago.? TMS9914 I think was the chip. Harvey.

Hey Clark, I've never seen such a thing (/g/TekScopes/album?id=301415), how strange. I wonder if anyone here knows what sort of plastic Tek used for these? I've never looked closely

I ran the 492 long enough for it it wake up again, and tried swapping a cold VR module in…and it kept working with a full scale peak, which ruled out the VR (and calls into question my notes on

Have you checked its functions, or are you too scared ????? ;-)

Almost. Valid addresses are 0 thru 30, with 31 reserved for Untalk or Unlisten. Steve Hendrix

If your incorrect address of 4 instead of 14 was written in hex or octal rather than decimal, I'd suspect a bad DIP switch. But IEEE-488 addresses are usually stated in decimal, and context in the

Hi Mark, At this point, anything could be bad as far as I'm concerned, including my reasoning to get to the VR as a potential problem. Without extenders, I don't think there's enough room to spray

[email protected]> wrote: It looks like archive.org captured at least some of the threads

Adam, Could the transistors be bad? The 2N5179 replaces ones on this board of the p/n, 151-0282-00. If you have component cooler, use that to briefly spray on the transistors to see if cooling them

Radu Bogdan Dicher <vondicher@...> added the photo album Tektronix TDS754D - acquisition board issues ( /g/TekScopes/album?id=301426 )

I added a couple of pictures here: /g/TekScopes/album?id=301426. Please note: 1. CH 1 seems to be able to display the square wave from the test/adjustment terminals. 2. CH2

I'm reviving this thread, because I seem to have a very similar issue and am not sure how to progress. This is a 754D that had a plethora of errors, most of which got solved by replacing SRAMs

Continuing my diary of 492P woes in case it's helpful to some other poor schlub reading the archives in future. At least one version of the service manual says you can replace select resistor

Interleaved. Nope.? The address switches on the instrument control the address (much like I2C does it). HPIB has three functions, all of which can be separate: listener, talker, controller.? For

Perfect! Thanks a bunch for all that info! I also am a bit miffed that Tek nerfed their forums, there was good info there, they could have at least archived it..... Jared.

Steve and all, Thank you for elaborating on the topic. It's really useful to put some good detail and get a better understanding of the general rules and mechanisms of the protocol. Steve - thank you

Tek really messed up when they killed the old site. Maybe if more people complained (I did, a bit) they would backtrack ? I dumped all my notes and screenshots to my website,

GPIB doesn't have the concept of a "connection". Each device sets its own address, sometimes via DIP switches, sometimes, via front panel commands, etc., but that instrument "knows" its own address.

The address is selected in the scope (like most other instruments) and you don't have to reboot if you change it. If you have National Instruments GPIB hardware you can try and play with this