Re: HP 9825 A & HP 9872 B
On 2020-04-29 10:28 a.m., davidstokes@... wrote:
On Tue, Apr 28, 2020 at 02:58 PM, Craig Ruff wrote:
I am afraid that the self test on the plotter will not be able to fully test the HPIB interface, at best it can read some registers and see that the signal lines on the interface are as expected. The same is true of the test you used on the 98034 it is just reading some registers in the interface. The problem is there is no convenient way to test the electronics that drive the bus and since the data bus is a bi-directional bus you cannot even do a simple wrap test. The only way you can really be sure the 98034 is functioning is connect a known good HPIB device to it and try to talk to it, if you have a logic analyzer available to you, you could use it to observe the activity on the bus when you try to send commands to the plotter.