Ten-Tec Orion Manuel utilisateur

1

Orion Logic/DSP

modifcation to support

Version 2.x firmware

Orion firmware 2.0 and later implements an enhanced multiprocessor

communications interface between the dual DSPs and the main CPU. A

minor modification must be made to the hardware to support this new

architecture. This document describes the modification step-by-step.

Tools required for the modification are shown above. In

addition, wire stripper/cutters, work light and magnifier

may also be helpful.

2Revision 1.1 08/18/2005

Step 1: Remove the 18 #10 Torx-type screws used to attach the

back of the Orion’s top and bottom covers to the chassis. The tool,

a T10 Torx screwdriver was included in the package of accessories

supplied with the transceiver. They are also available at your local

hardware or home improvement outlet.

Step 2: Remove the 4 large black phillips screws attaching the covers

to the sides of the chassis.

3

Step 3: Remove the 12 flat-head phillips screws used to attach the

front panel molding to the chassis.

Step 4: Gently pull the front panel assembly forward to release it

from the chassis. When the assembly is clear of the chassis the

entire panel may be tilted forward as shown.

4Revision 1.1 08/18/2005

Step 5: Disconnect cables. Before removing cables, mark the ribbon

cables A and B as shown. Other cables are marked to match cable

IDs indicated on the circuit board. Coax and Mass-Term cables will

pull off easily. The ribbon cables will be tight. When removing cables

grip the connector. DO NOT PULL ON THE CABLES.

Step 6: When all cables have been detached from the Logic/DSP

board the front panel will lay flat on the table. This provides ac-

cess to the mounting screws for the Logic/DSP assembly.

5

Step 7: Remove the 5 screws attaching the Logic/LCD assembly

to the front panel.

6Revision 1.1 08/18/2005

Step 8: Three header/pin connectors route signals signals between the

Logic/DSP board and the front panel. Remove the Logic/LCD assembly

from the front panel by lifting vertically as shown to reduce the potential

for bent pins.

Logic/DSP/LCD assembly is removed as a unit.

7

Step 9: Separate the LCD and Logic/DSP circuit board by remov-

ing the 4 attaching screws indicated above.

Be careful not to lose any insulators.

8Revision 1.1 08/18/2005

Step 10: Flip the logic board over so the major components are face

down. Locate the general section of the board indicated above.

9

Step 11: The modification involves cutting two tracks and adding a

short wire jumper between two resistors. This is shown in the diagram

above.

A magnified closeup of the modification.

10Revision 1.1 08/18/2005

Step 12: Reattach the LCD to the Logic/DSP circuit board. Be sure

to reinstall any insulators removed during disassembly.

Note! The LCD panel is attached to the Logic/DSP board using 4

screws at locations shown.

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