NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

32-bit LC 020 Processor Direct Slot

Topology

Star

Wiring Type

Unshielded twisted pair (RJ-11)

Boot ROM

Not available

SEGMENT LENGTH AND RESPONSE/RECONFIGURATION TIMEOUTS

Maximum Length

Response Time

Reconfig. Time

ET1

ET2

22,000 feet

74.7µs

840ms

Pins 1 & 2 closed

Pins 1 & 2 closed

96,000 feet

283.4µs

1680ms

Pins 2 & 3 closed

Pins 1 & 2 closed

195,000 feet

561.8µs

1680ms

Pins 1 & 2 closed

Pins 2 & 3 closed

393,000 feet

1118.6µs

1680ms

Pins 2 & 3 closed

Pins 2 & 3 closed

Note:All NICs on the network must have this option set the same.

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Green

On

Normal operation

LED1

Green

Blinking

There is a break in the network (not necessarily at this card)

LED1

Green

Off

Fault detected

LED2

Red

On < 1 sec

Card is checking or selecting its node address/ID

LED2

Red

Off

Normal operation

Note: LED2 will light momentarily when the computer is first turned on, it should then remain off. If a fault is detected (LED1 off), the fault could be any one or a combination of the following: Card is not attached to an active network, the card is not selected in the control panel, AppleTalk is not enabled in the Chooser, the hybrid transceiver on the card is defective, there are no active stations on the network, the Mac's -12VDC power supply is malfunctioning, the hub is defective, or there is a break in the network cable.