22-Aug-04

NOTE! Before making use of the ZIPfiles in either of the subdirectories, PLEASE READ THIS! The stable operation of your instrument may depend on it.

The following notes were supplied by Fred de Vries.

-=-=-=-=-=-=-=-=-=-=-<break>

To clarify things, 

The 2445B had a major change during it's production live. The uP 
board changed.

The early model had no SMD's, and used a separate lithium backup 
battery for maintaining the SRAM content. Also this uP board did not 
have the readout circuits. It needed a separeate board for this.
Due to the separate battery you will not find the content of the 
SRAM in the ZIP file :-)

The late model uP board came with a NVRAM (DS1245) and integrated 
readout circuits. Most of this board was desingend with SMD's
This late model has also a rare Intel 27011 EPROM (a paged one)

It think the switch was made at serial number B050000

Regards,

Fred de Vries, PE1FBO

-=-=-=-=-=-=-=-=-=-=-<end>

So, in essence: Make sure you get the correct file set!

Keep the peace(es).

73 de KC7GR