[time-nuts] HP5335A GPIB questions.
lmester60 at gmail.com
Fri Mar 27 14:45:35 EDT 2015
>Luke, the HP5335A was introduced in around 1980 and has an early
>(pre-IEEE-488.2) HP implementation of IEEE-488 which requires a
>terminator character at the end of each string. According to the manual,
>this terminator can be a comma, semicolon, space, carriage return, or
>line feed character.
>The delays are extremely important. The 5335A can and will hang if you
>don't wait long enough. In keeping with that, *do not* set your adapter to
>do an automatic read after sending data over the GPIB.
Bill, Orin, Thank you! You solved my problem!
It's working normally now! I was not sending a terminator at the end of the
command and I had automatic read after send turned on. Setting to manual
read, sending <CR> and then reading manually stopped the strange behavior.
With a few lines of BASIC I'm now saving frequency readings to a file.
I've already found that my home-built adapter won't work with Timelab. It
has served it's purpose. With less than $10 worth of parts I was able to
verify that the GPIB on my HP5335A is working. Now it's time to get a
better GPIB adapter.
I like the Prologix because It's easy for me to write code to access a com
port. Do you know if the 82357 type adapters can be accessed as a com
port? Any suggestions on what adapter to use?
More information about the time-nuts