Does the AA5001 have a DIP switch for the address and terminator options?
These very often fail open and is the first thing I would check on any Tek
gear with gpib issues. Even though you think you've ruled it out by trying
multiple addresses, ohm out the DIP switch.
Dave Casey
On Thu, Nov 25, 2021, 1:54 PM Brian Nordlund <brian.nordlund@...>
wrote:
I thought my AA5001 was fully working, but have discovered that the GPIB
board is not responding to commands. I have over a dozen working GPIB
devices, including four other TM modules. Since the AA5001 does not work
in any (otherwise working) slots, I have no reason to suspect my controller
or chassis.
When my controller writes a command string to the device (or tries to
read) it times-out, so the GPIB board appears to not be responding. I have
tried several different device addresses, to rule out a bad bit on the
address switch / decoder on the GPIB board.
Since the freely available service manual is missing all the service /
maintenance sections, I bought the Artek manual, which I am very happy
with. However, I am wondering if it might be missing the larger pull-out
pages that are mentioned on page 6-11 under the (short) discussion on
Signature Analysis. The pdf does include Figure 9-8 which is called
¡°Signature Analysis Table¡±. However, it is not much help. It shows some
parts-outlines, with some codes alongside selected pins. The codes are not
hex, since they include characters like ¡®P¡¯, ¡®H¡¯, and ¡®U¡¯. It provides no
detail as to how to capture or interpret them.
When signature analysis is supported, I normally will find more detail as
to how to capture the data. More importantly, I would expect to find a
table that provides some diagnostic commentary on where the problem may be
when you don¡¯t see the expected codes.
Does anyone have the printed manual or otherwise have any details to get
me started with Signature analysis on this unit?
Thanks,
Brian.
