[time-nuts] HP 5335a opt 40 addendum

[Magnus Danielson]

Norman J McSweyn wrote:
> Hi all!
> I'm having some trouble programming my 5335a. The manual that Agilent 
> has doesn't cover opt 40. Have psyched out several of the codes that 
> aren't in the manual.
> Using Labview 8, string that is sent is this: in,az1,bz1,ap0,bp0,fn2,trg
> (initialize)
> (chA impedance 50 ohms)
> (chB """"""""""""""""")
> (chA preset off)
> (chB""""""""""")
> (time interval)
> (trigger measurement)
> 
> CHANNEL A AND B IMPEDANCE COMMANDS ARE GUESSES!!!!

They are correct.

You do not say anything on trigger levels and other 040 settings 
thought. The programming example 13 indicates that you should do 
something like this:

in,fu2,co1,bs1,tr1,at+2.71,bt+3.14

This becomes

in  - Initialize
fu2 - Time Interval
co1 - Set COMA on
bs1 - Set SLOPE B to NEGATIVE
tr1 - Set TRIGGER LEVELS to REMOTE
at+2,71 - Set TRIGGER LEVEL A to +2,71 V
bt+3.14 - Set TRIGGER LEVEL B to +3,14 V

The programming example does not use the trg command!

> The result is a hang with no measurement.
> If I forgo the impedance settings via gbib (doing it manually), I will 
> get an error (front panel 1.0). Manual says this is an invalid HPIB 
> alpha command sent. I will get a measurement. It takes 1.5 sec or so.
> 
> I'm on vacation for the next two weeks. This am will be busy. Will be 
> free 16Z give or take.

I hope the above hints helps. I haven't tested them against my HP5335A 
(with option 040) but I could do the effort if you need additional 
assistance.

Cheers,
Magnus