Jan
        When I profile a board and establishing machine settings, I start 
     with three probes: one on a top side termination, one on a bottom 
     termination and one on a component lead that best represents the 
     component set. I may have to relocate probes as necessary to analyze 
     and trouble shoot problem areas. 
        I have found this method adequate in providing meaning full data 
     needed to understand and optimizing the entire soldering (preheat, 
     solder, and cooling) process.

        Dan Botts 
        Hughes Training Inc.
______________________________ Reply Separator _________________________________
Subject: ASSY: MOLE temperature probes
Author:  [log in to unmask] at CCGATE
Date:    5/29/97 7:58 AM


Hi Technet!
     
A question:
To measure temperature on a PCBs you have to use a MOLE or similar with 
probes (or whatever they are called).
To measure if the temperature is too high on, for example, SMDs in wave 
soldering the most logic should be to put the probe on the PCB in a 
SMT-components joint, right?
But where do you put the probe if you want to measure and adjust the 
temperature for hole mounted components?!
We have different points of view in this matter, some say that i should 
put the probes on top of the PTH and some inside the PTH.
Anyone have any suggestions?
Is there any litterature which should help?
     
Thanks,
Jan Merstrand
Ericsson Microwave System
     
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