[sebhc] Siemens Drive Terminator

[Joe Smith]

Look here:
http://www.jameco.com
for resitor network
> 
> From: "Barry Watzman" <Watzman at neo.rr.com>
> Date: 2006/01/06 Fri PM 08:05:23 EST
> To: <davidwallace2000 at comcast.net>,  <sebhc at sebhc.org>
> Subject: RE: [sebhc] Siemens Drive Terminator
> 
> That helps a lot ... it would be nice to confirm the pinout, but the fact
> that it's 220/330 ohms, plus being a 16-pin part, probably nails it down.  I
> was trying to find the p/n on the digikey page that I referenced, and they
> definitely have it (I think it's figure 6), but I can't tell how to specify
> the p/n from the information on that page.
> 
>  
> 
> Barry Watzman
> 
> Watzman at neo.rr.com
> 
>  
> 
>  
> 
>   _____  
> 
> From: davidwallace2000 at comcast.net [mailto:davidwallace2000 at comcast.net] 
> Sent: Friday, January 06, 2006 6:01 PM
> To: Barry Watzman
> Subject: RE: [sebhc] Siemens Drive Terminator
> 
>  
> 
> This info is from the schematic for the Wangco/Perkin-Elmer model 82 drive
> manual that came with my WH-17.
> 
>  
> 
> "Typical termination when part # 618417-001 installed in location 1E" and
> shows a network consisting of 220 ohms to + and 330 ohms to ground, with the
> signal connected to the center of this voltage divider.  (By Thevenin's
> theorem, this is 132 ohms to 3.5 V.)
> 
>  
> 
> Paragraph 2.3.5 of the manual (page 2-6) says the same thing.
> 
>  
> 
> Nowhere is the pin-out for the terminator given, and my WH17 is not
> currently accessible enough to allow me to investigate further.  My
> assumption is that in 8 will be ground, pin 16 will be +5V and the remaining
> 14 pins will be connected to the signals (or possibly not all networks will
> be used -- there seem to be only 12 signal lines on J1).
> 
>  
> 
> Hope this helps.
> 
>  
> 
> Location 1E on the drive is a 16-pin socket.
> 
>  
> 
> -------------- Original message -------------- 
> From: "Barry Watzman" <Watzman at neo.rr.com> 
> 
> I need more information than just a value.  Some of these were just packs of
> resistors from one side of the dip package to the other, but some were
> complex networks of multiple resistors of different values, and some had
> internal "common" ties to ground or +5 volts.  I need a schematic of the
> terminator, or a part number.
> 
>  
> 
> Take a look here, at the figures on the right-hand side of the page:
> 
>  
> 
> http://dkc3.digikey.com/PDF/T061/1256.pdf
> 
>  
> 
> Is it figure 4 or figure 5 or figure 6 (note that figures 4 and 6 have
> multiple resistors of different values inside the terminator pack, and
> figure 4 was often used for bus termination).  Plus, of course, there is the
> question of the value(s) of the resistors in the pack.
> 
>  
> 
> Barry Watzman
> 
> Watzman at neo.rr.com
> 
>  
> 
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