dmm with serial port control

[2dye4]

I am looking for a handheld dmm with a 232 port
and documented command codes.
There are many out there including the meterman 38xr
but I cannot find any that document the control codes.
They all want to sell some BS software that
could be written in 2hrs by a moderately skilled programmer.

I need to roll some simple software for an automated
data collection project.

Does any know of a meter with documented command codes???


thanks

 

[Skogsgurra]

Hi,

Those commands are usually very brief. You can easily find out by connecting a scope (memory) to the Tx and Rx lines and analyse the bits as you do some measurements.

Of course, it means that you have to buy that BS SW. But once you have it, it is easy to analyse and you can then write code for any application you want.



Gunnar Englund

http://www.gke.org

 

[itsmoked]

Pretty cool meter but confused interface. One page sez "optical PC interface" and another sez "RS-232 cable". Which makes me wonder if it doesn't have some strange interface that requires a strange interface cable that you would get automatically with the BS software.

 

[ScottyUK]

Hi ItSmoked,

Have you left a link out of your post?


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Your body might be a temple. Mine is an amusement park...

 

[itsmoked]

Yo ScottyUK, I just kinda perused a bunch of pages and saw that anomaly...

But here are two pages:

The first talks "RS-232 cable"

http://www.tucker.com/java/jsp/product_partno38XR_invid1459_condN.htm

This second one mentions the "isolated optical" cable.(second paragraph/block)

http://www.tequipment.net/WavetekPM2.html

 

[analogkid2digitalman]

itsmoked-

My Fluke has a serial port RS-232 cable that terminates to an IR photodiode optical transciever at the meter end. It is used to download logged or real-time data, not for discrete control. The optical portion provides electrical isolation. Maybe that is what they are referring to?

Wheels within wheels / In a spiral array
A pattern so grand / And complex
Time after time / We lose sight of the way
Our causes can't see / Their effects.