From: rcini@optonline.net   
      
   150 ohms matches the impedance of the cable used and works perfectly.   
   Digi-Key and Mouser still carry these in PDIP versions. Some drives (Teac,   
   YE Data) use 14-pin terminators which are less common but Mouser carries   
   them.   
      
      
   On 6/9/07 7:04 PM, in article   
   XlGai.7435$u56.1211@newssvr22.news.prodigy.net, "Gary"    
   wrote:   
      
   > correct   
   > 1 to 16   
   > 2 to 15   
   > 150 ohms...   
   >   
   > "eugene"  wrote in message   
   > news:1181288169.072533.93560@n15g2000prd.googlegroups.com...   
   >> I just rescued a Model 4 in sad shape from an electronics recycler.   
   >> It won't boot from drive 0 and the motor is acting really strange.  I   
   >> pulled both drives out and neither one of them is terminated!  I put   
   >> in a Teac FD-55BV just for testing and it boots.  So the machine is   
   >> working.   
   >>   
   >> My question is this, I know that one of the lines that is terminated   
   >> by the resistor network is the Drive Motor Enable.  Since it isn't   
   >> being terminated this could explain the strange motor behaviour.  I   
   >> don't have a termination resistor network.  I'm assuming that it's   
   >> just a 150ohm network wired straight through?  That is, 150ohms   
   >> between pins 1 and 16, 2 and 15, etc.  I couldn't find specifications   
   >> for the resistor network in any of the TM100 documentation other than   
   >> a web site which claimed it to be 150ohms.  That seems small to me.   
   >>   
   >> Does anyone know the specifications on the termination network?   
   >>   
   >   
   >   
      
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