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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

Apologies for the gravedig, but does anyone have this pinout for the J40 Debug port to Option 13 adapter? Seems the Tek website links no longer work... I'm currently designing a USB debug adapter and

Wolfgang the original Tektronix relays can often be reworked, eg exercise contacts or clean with Iso alcohol, contact cleaner and paper strip. See threads years ago Jon

Thank you, Harvey. If I understand correctly, you're saying that the # GPIB connection may "port" another, "hot swapped" instrument to the same # GPIB? I got impatient after posting this and thought

The 488 bus is an addressed bus, which means recognizing an address on a bus and having something respond (think I2C for an example). So when you hot swap instruments, assuming that you don't glitch

I recently acquired a PG502 from Tek surplus (aka Country Store) and found several setting to be intermittent. Expecting that a good cleaning would be in order, I was astonished to find that cam