Hi Randy:
Sorry, I was trying to give you a link to the Valpey VF150 data sheet, but
their web site does not allow that.
Have Fun,
Brooke Clarke
http://www.prc68.com/P/Prod.html Products I make and sell
http://www.prc68.com/Alpha.shtml All my web pages listed based on html name
I know this is a bit off-topic here, but has anyone here ever programmed
an HP 59306A relay actuator
http://www.home.agilent.com/agilent/product.jspx?cc=USlc=engnid=-536900193.536882169
which consists of 6 SPDT relays programmable via GPIB?
Over the years I have programmed a number of
Daun Yeagley wrote:
Hi David
Don't worry about all the level stuff. That's internal to the box (59306).
The only thing you need to worry about is how to generate the proper
commands on the bus for your particular H/W-S/W combination.
But looking at the example program, one sends
* ? to
Remember these units don't have uC, so any signal that would normally depend
on some timing must be generated externally, i.e. come from the bus. I
suspect the box might need some signals that other equipment (uC equipped)
may not absolutely require. However, this being a piece of HP equipment, I
Hi David
You'll need a scope to look at the lines. If you try reading with a
voltmeter, you'll only get the average value of the data that is being
transmitted.
There are a couple of control line as part of the bus. The most important
one for our purposes here is the ATN line. When this line
Didier Juges wrote:
Remember these units don't have uC, so any signal that would normally depend
on some timing must be generated externally, i.e. come from the bus. I
suspect the box might need some signals that other equipment (uC equipped)
may not absolutely require. However, this being a
Hi David:
The HP 59000 series boxes were some of the very first HP-IB instruments made.
They are what might be called glue boxes used to build systems. As has been
pointed out there is not a micro controller and in addition there is no
IEEE-488 interface chip (this was before there was an
Brooke Clarke wrote:
Hi David:
The HP 59000 series boxes were some of the very first HP-IB
instruments made. They are what might be called glue boxes used to
build systems. As has been pointed out there is not a micro
controller and in addition there is no IEEE-488 interface chip (this
Brooke Clarke wrote:
But, since there's no micro controller you should not send any
characters after the single command byte. No CRLF, no EOI. You
may need to explicitly set the termination sequence so that these are
avoided.
Looking at the manual on the HP 59306A, it says of the EOI line
Hi David:
Sorry about that. You're correct EOI and a number of the other control signals
are not used. Do you have a complete schematic, mine has the left side missing
and I can't read the names of the lines.
Have Fun,
Brooke Clarke
http://www.prc68.com/P/Prod.html Products I make and
At 12:42 PM -0700 5/24/08, Randy Leifer wrote:
I applied 5v + ground to the proper pins. Pin 1 left
open.
Results vary from part to part, but within 10kHz of
1MHz.especially if voltage is dropped to 4.1v.
3.3v output is further off.
I don't know if a load on the output makes a
Brooke Clarke wrote:
Hi David:
Sorry about that. You're correct EOI and a number of the other
control signals are not used. Do you have a complete schematic, mine
has the left side missing and I can't read the names of the lines.
Have Fun,
Brooke Clarke
I found this on the Agilent
Those do sound like old-fashioned TTL oscillators. They will require
5V to run. Expect a frequency error range of about 50 PPM.
Many newer cans run on 3.3V.
And don't expect good frequency accuracy or phase noise
They might make good thermometers. :)
(You probably have to keep the
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