HP Forum Archive 21

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Zengrange Zeprom Question Message #1 Posted by aj04062 on 10 Nov 2012, 12:14 p.m. I just picked up 2 SMI Surveyor-41 CO-OP modules that are identical except one is labeled Zengrange and one is not. I can feel the "erasing window" under the sticker on the Zengrange labeled module, but there is no window on the other one. Question is: Can someone identify the non-Zengrange module? Is it an MEPROM? Cat 2 returns CO-OP ROM for BOTH modules... Edited: 10 Nov 2012, 12:29 p.m.

Re: Zengrange Zeprom Question Message #2 Posted by Raymond Del Tondo on 10 Nov 2012, 1:09 p.m., in response to message #1 by aj04062 Can you provide pictures of the other module? If it has a small opening on each side, then it could be a CMT EPROM. If the module housing looks exactly like a normal HP module, then maybe it's a mask programmed ROM made by HP. As an example, the CCD module version A programmed by W&W was manufactured by HP, the version B was made by W&W inhouse using CMT EPROM mdules. HTH Ray

Re: Zengrange Zeprom Question Message #3 Posted by aj04062 on 10 Nov 2012, 3:17 p.m., in response to message #2 by Raymond Del Tondo Looks like there is a hole in the side: Edited: 10 Nov 2012, 3:20 p.m.

Re: Zengrange Zeprom Question Message #4 Posted by Raymond Del Tondo on 10 Nov 2012, 3:56 p.m., in response to message #3 by aj04062 Thanks for the pics. It is a CMT EPROM. The EPROM chip is standard, but to reach the pins you'll need a special programming adapter, which is next to impossible to get. Ray

Re: Zengrange Zeprom Question Message #5 Posted by aj04062 on 10 Nov 2012, 7:06 p.m., in response to message #4 by Raymond Del Tondo Thanks Ray, I'm going to toss these up for auction. I appreciate the knowledge so I can accurately describe them. Adam Edited: 10 Nov 2012, 7:07 p.m.

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