Difference between revisions of "EPIC 1"

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(Created page with "The EPIC 1 is the first generation of the SCM. = Basics = These are good SCM's if you don't have a SIMM, as they can take the 29F040 flash chips with a dip switch change. If...")
 
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[[File:SCM TTN4094-TRN7900-CLN6686-9.png|thumb|Station Control Module Epic 1 Schematic Diagram Page 9 of 10]]
 
[[File:SCM TTN4094-TRN7900-CLN6686-9.png|thumb|Station Control Module Epic 1 Schematic Diagram Page 9 of 10]]
 
[[File:SCM TTN4094-TRN7900-CLN6686-10.png|thumb|Station Control Module Epic 1 Schematic Diagram Page 10 of 10]]
 
[[File:SCM TTN4094-TRN7900-CLN6686-10.png|thumb|Station Control Module Epic 1 Schematic Diagram Page 10 of 10]]
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= Know issues =  
 
= Know issues =  

Revision as of 12:57, 20 November 2015

The EPIC 1 is the first generation of the SCM.

Basics

These are good SCM's if you don't have a SIMM, as they can take the 29F040 flash chips with a dip switch change. If you have one with a SIMM on it, remove the SIMM and install the chips! Use the SIMM for an EPIC 2 or 3.

The complete schematics are PNG format and are also available as a pdf

Know issues

This is known to have a problem with no or low transmit modulation. This has been traced back to U306 in the audio processing stages on the SCM. It's a MAX292EWE+ available from Digi-Key for about 7 dollars.

Station Control Module Epic 1 U306 Diagram showing part that goes bad resulting in low or no transmit modulation.