Reading data back from HP4195A

L

Larry Martell

Guest
I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?

TIA!
-larry
 
On Thu, 08 Dec 2005 18:38:05 -0800, Larry Martell wrote:

I am writing a program to control a 4195 over the HP-IB bus, and I can't
seem to find the command to return the data from a sweep. I have worked
with many other HP test instruments, and usually there is a command that
sends back the entire data set after a sweep is completed (e.g. on the
3562A that command is "DDAS"). Anyone know would I get the sweep data back
from the 4195A?
Click to expand...
I don't know about this particular model, but there is a standardized
data acquisition and control language called SPCI (Standard Commands for
Programmable Instrumentation) http://www.scpiconsortium.org/SCPI-99.pdf
which is used by many modern instruments (multimeters, scopes, generators,
etc). DDAS doesn't seem to be a SPCI command, by the way.
 
I know for my HP synthesizer there is a "gate" signal -- and I can control
the synthesizer and spectrum analyzer all in one.

Try posting your question on the newsgroup rec.radio.amateur.homebrew --
there are quite a few former HP (Agilent) engineers who visit there. A lot
of ham radio ops use HP network analyzers, synthesizers, VNA's etc.

"Larry Martell" <natkelcri@yahoo.com> wrote in message
news:1134095885.492669.295740@g49g2000cwa.googlegroups.com...
I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?

TIA!
-larry
Click to expand...
 
przemek klosowski wrote:
On Thu, 08 Dec 2005 18:38:05 -0800, Larry Martell wrote:

I am writing a program to control a 4195 over the HP-IB bus, and I can't
seem to find the command to return the data from a sweep. I have worked
with many other HP test instruments, and usually there is a command that
sends back the entire data set after a sweep is completed (e.g. on the
3562A that command is "DDAS"). Anyone know would I get the sweep data back
from the 4195A?

I don't know about this particular model, but there is a standardized
data acquisition and control language called SPCI (Standard Commands for
Programmable Instrumentation) http://www.scpiconsortium.org/SCPI-99.pdf
which is used by many modern instruments (multimeters, scopes, generators,
etc).
Click to expand...
I don't know if I'd call a 4195 a "modern" instrument. My 4195A was
made in 1989, and
SPCI came out in 1999.

DDAS doesn't seem to be a SPCI command, by the way.
Click to expand...
It's an HP-IB command that the 3562A accetps.

-larry
 
Larry Martell wrote:
On Thu, 08 Dec 2005 18:38:05 -0800, Larry Martell wrote:


I am writing a program to control a 4195 over the HP-IB bus, and I can't
seem to find the command to return the data from a sweep. [...]
Click to expand...
I have an HP3577A that accepts commands like "DRA" (Dump Register A).
Send it "FM1" first if you want ASCII data. If that works, I should
be able to suggest a few more commands to try out.

Jeroen Belleman
 
On 8 Dec 2005 18:38:05 -0800, "Larry Martell" <natkelcri@yahoo.com>
wrote:

I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?

TIA!
-larry
Click to expand...
A register: A?
B register: B?
X register: X?

My normal sequence:
SWM2 single sweep mode
SWTRIG trigger (may need to insert a wait)
A? get A register
B? get B register
X? get C register

---
Mark
 
qrk wrote:
On 8 Dec 2005 18:38:05 -0800, "Larry Martell" <natkelcri@yahoo.com
wrote:

I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?

TIA!
-larry

A register: A?
B register: B?
X register: X?

My normal sequence:
SWM2 single sweep mode
SWTRIG trigger (may need to insert a wait)
A? get A register
B? get B register
X? get C register
Click to expand...
Thanks very much Mark. I've played around with this a bit, and I found
that the
A register has the Y data and the X register has the X data. But what
data is
contained in the B register?

-larry
 
In comp.sys.hp.hardware Larry Martell <natkelcri@yahoo.com> wrote:
I am writing a program to control a 4195 over the HP-IB bus, and I
can't seem to find the command to return the data from a sweep. I
have worked with many other HP test instruments, and usually there
is a command that sends back the entire data set after a sweep is
completed (e.g. on the 3562A that command is "DDAS"). Anyone know
would I get the sweep data back from the 4195A?
Click to expand...
Have you tried poking around www.agilent.com yet? Of the two (HP or
Agilent) I would suspect that Agilent is more likely to have old stuff
for that. Of course, it may be old enough that the docs were never
done for online perusal...

rick jones
--
oxymoron n, Hummer H2 with California Save Our Coasts and Oceans plates
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...
 
Hi,

Please contact my friend Marc / F5MM he has many many HP TM equipment and do
some programming for these and he own a 4195A .
His email is: marcmislanghe@compuserve.com
Recommand you from myself, he's a very good friend. He is also starting a
European HP museum with around more than 500 instruments, vintage and more
recent.
I copy him with this email.

Good luck
Pierre-François / F5BQP
pfmonet@wanadoo.fr

"Larry Martell" <natkelcri@yahoo.com> a écrit dans le message de news:
1134095885.492669.295740@g49g2000cwa.googlegroups.com...
I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?

TIA!
-larry
Click to expand...
 
On 9 Dec 2005 15:02:32 -0800, "Larry Martell" <natkelcri@yahoo.com>
wrote:

qrk wrote:
On 8 Dec 2005 18:38:05 -0800, "Larry Martell" <natkelcri@yahoo.com
wrote:

I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?

TIA!
-larry

A register: A?
B register: B?
X register: X?

My normal sequence:
SWM2 single sweep mode
SWTRIG trigger (may need to insert a wait)
A? get A register
B? get B register
X? get C register

Thanks very much Mark. I've played around with this a bit, and I found
that the
A register has the Y data and the X register has the X data. But what
data is
contained in the B register?

-larry
Click to expand...
The B register contents depends on what the instrument settings are.
Hit the format button for the A and B register definitions.

Network analysis: phase, group delay, and imaginary part of the
signal.

Impedance analysis: to numerous to list.

Spectral analysis: nothing that I know of.

---
Mark
 
"Larry Martell" <natkelcri@yahoo.com> wrote in message
news:1134095885.492669.295740@g49g2000cwa.googlegroups.com...
I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?
Click to expand...
fwiw, the folks at SOFTWIRE have put together a Visual Basic routine for
GPIB -- it can be found as a zip file on the Softwire Forum -- in the "Strut
Your Stuff" section. http://forums.softwire.com
 
qrk wrote:
On 9 Dec 2005 15:02:32 -0800, "Larry Martell" <natkelcri@yahoo.com
wrote:

qrk wrote:
On 8 Dec 2005 18:38:05 -0800, "Larry Martell" <natkelcri@yahoo.com
wrote:

I am writing a program to control a 4195 over the HP-IB bus,
and I can't seem to find the command to return the data from
a sweep. I have worked with many other HP test instruments,
and usually there is a command that sends back the entire data
set after a sweep is completed (e.g. on the 3562A that command
is "DDAS"). Anyone know would I get the sweep data back from
the 4195A?

TIA!
-larry

A register: A?
B register: B?
X register: X?

My normal sequence:
SWM2 single sweep mode
SWTRIG trigger (may need to insert a wait)
A? get A register
B? get B register
X? get C register

Thanks very much Mark. I've played around with this a bit, and I found
that the
A register has the Y data and the X register has the X data. But what
data is
contained in the B register?

-larry

The B register contents depends on what the instrument settings are.
Hit the format button for the A and B register definitions.

Network analysis: phase, group delay, and imaginary part of the
signal.

Impedance analysis: to numerous to list.

Spectral analysis: nothing that I know of.
Click to expand...
Thanks again!!

-larry
 
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