home *** CD-ROM | disk | FTP | other *** search
-
-
- COMMON HARDWARE SETUP PROBLEMS
-
-
-
- THIN ETHERNET
- -----------------------------------------------------------------------
-
- A popular type of ethernet cable is often called "thin ethernet".
- It involves 50 ohm cable that is about 5 mm in diameter, with BNC
- connectors. Note: There are several types of cable that meet this
- description. Have your system manager verify that it is the correct
- type. If you are using the common "thin ethernet", the following
- applies:
-
- CABLES NOT CONNECTED PROPERLY
-
- Is the tee firmly connected to your ethernet card?
-
- The tee should swivel but not pull off when pulled gently. If it
- pulls off, twist the collar a quarter turn clockwise until it pops
- into place. The cables and terminator caps also have collars that
- pop into place after a quarter turn clockwise.
-
- You CANNOT connect the cable directly to your ethernet card.
- You must plug the middle-branch of a TEE into the Amiga, and the
- cable to one end-branch. The other end-branch must be connected
- to a 50 ohm TERMINATOR cap, or to another cable.
-
- If your Amiga is the last machine on the end of the cable, you MUST
- connect a TERMINTOR CAP on the other end of the tee, as shown below:
-
- ethernet cable here---> =========] <---terminator cap here
- H
- H
- H
- Tee-middle
- to ethernet card
-
-
-
-
- If your Amiga is in the middle of a chain, there will be a cable
- on each end of the tee that has its middle branch connected to your
- Amiga, as shown below:
-
- ethernet cable here---> ========= <---another ethernet cable
- H
- H
- H
- Tee-middle
- to ethernet card
-
-
- COMMUNICATION FAILURE OF ALL MACHINES ON THE CHAIN WILL RESULT FROM ANY OF:
-
- 1. Cable connected to ethernet card. (Card connects to tee-middle only.)
- 2. Cable end open. (Cable end must connect to tee-end.)
- 3. Tee with one tee-end open. (Tee-ends connect to cap or cables.)
- 4. Improper terminator. (Must use 50 ohm ethernet terminator)
-
- If only the middle of the tee is disconnected from an ethernet card, it
- affects only that card; the rest of the network will be unaffected.
-
-
- Note: For devices other than computer ethernet cards, see system manager.
-
- ------------- End of "Thin Ethernet" Hardware Section -----------------
-
-
-
-
-
- THICK ETHERNET
- -----------------------------------------------------------------------
-
-
- The cable that connects the thick ethernet wire to your Amiga is
- about 12 mm in diameter, with 15 pin D-shell connectors.
- Note: There are several types of cable that meet this description,
- so have your system manager verify that it is the right type.
-
- This type of cable connects directly to the female 15 pin connector in
- the end of the ethernet card in the Amiga. For connections at the
- other end of the thick ethernet cable, see your system manager.
-
- Is the cable firmly connected to your ethernet card?
-
-
- CARD MUST BE CONFIGURED FOR THICK ETHERNET
-
- The Commodore Ethernet card is shipped a jumper in position for
- thin ethernet. To use thick ethernet, you must:
-
- 1. Disconnect power and other cables from the Amiga.
-
- 2. Open the Amiga's cover.
-
- 3. Remove ethernet card from the Amiga.
-
- 4. Locate the 18-pin jumper block on the ethernet card.
- It is next to the 15-pin female D-shell connector.
-
- 5. Remove jumpers from pin rows A&B (THIN ethernet position)
- Replace jumpers on pin rows B&C (THICK ethernet position)
-
- 6. Replace ethernet card in the Amiga.
-
- 7. Replace the Amiga's cover.
-
- 8. Reconnect power and other cables.
-
-
- SEE THE MANUAL THAT IS SHIPPED WITH THE ETHERNET CARD FOR MORE DETAILS.
-