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# ATC/UNITRON COMPUTERS AND COMPUTER PARTS
FD-100
NIC Type Ethernet
Maximum Onboard Memory 32KB DRAM
Network Transfer Rate 10Mbps
Data Bus Parallel
Topology Linear Bus/Star
Wire Type Unshielded twisted pair
RG-58A/U 50ohm coaxial
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|--------------------+-------+-----------------------+-------|
| Parallel port | J1 | Unshielded twisted | J3 |
| | | pair connector | |
|--------------------+-------+-----------------------+-------|
| RG-58A/U 50ohm | J2 | DC power in | J4 |
| coaxial connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIAGNOSTIC LED(S) |
|------------------------------------------------------------|
| LED | Color | Status | Condition |
|------+--------+----------+---------------------------------|
| LED1 | Yellow | On | Network connection on |
| | | | unshielded twisted pair is good |
|------+--------+----------+---------------------------------|
| LED1 | Yellow | Off | Network connection on |
| | | | unshielded twisted pair is |
| | | | broken |
|------+--------+----------+---------------------------------|
| LED1 | Yellow | Blinking | Transceiver is receiving data |
| | | | from network |
|------+--------+----------+---------------------------------|
| LED2 | Yellow | Blinking | Transceiver is transmitting |
| | | | data from network |
|------+--------+----------+---------------------------------|
| LED2 | Yellow | Off | Transceiver is not transmitting |
| | | | data from network |
|------+--------+----------+---------------------------------|
| LED3 | Green | On | Power is on |
|------+--------+----------+---------------------------------|
| LED3 | Green | Off | Power is off |
+------------------------------------------------------------+