TC6842 (FOR THE MACINTOSH) Network Card Settings and Configuration
THOMAS-CONRAD CORPORATION
TC6842 (FOR THE MACINTOSH)
NIC Type | ARCnet |
Transfer Rate | 2.5Mbps |
Data Bus | 32-Bit NuBus |
Topology | Star |
Wiring Type | RG62/U 93ohm coaxial |
Boot ROM | Not Available |
NODE ADDRESS | |||||||||
Node | SW1/1 | SW1/2 | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | |
» | 1 | Off | On | On | On | On | On | On | On |
| 0 | - | - | - | - | - | - | - | - |
| 2 | On | Off | On | On | On | On | On | On |
| 3 | Off | Off | On | On | On | On | On | On |
| 4 | On | On | Off | On | On | On | On | On |
| 251 | Off | Off | On | Off | Off | Off | Off | Off |
| 252 | On | On | Off | Off | Off | Off | Off | Off |
| 253 | Off | On | Off | Off | Off | Off | Off | Off |
| 254 | - | - | - | - | - | - | - | - |
| 255 | - | - | - | - | - | - | - | - |
Note:Node address 0 is used for messaging between nodes and must not be used. Node addresses 254 &255 are reserved for AppleTalk network broadcast messages and also must not be used. A total of 253 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch 1 is the Least Significant Bit and switch 8 is the Most Significant Bit. The switches have the following decimal values: switch 1=1, 2=2, 3=4, 4=8, 5=16, 6=32, 7=64, 8=128. Turn off the switches and add the values of the off switches to obtain the correct node address. (On=0, Off=1) | |||||||||
CABLE LENGTH AND RESPONSE/RECONFIGURATION TIMEOUTS | |||||
Cable Length | Response Time | Reconfiguration | JP1 | JP2 | |
» | < 20,000 feet | 74.7 m s | 840ms | Open | Open |
| > 20,000 feet | 283.4 m s | 1680ms | Closed | Open |
| > 20,000 feet | 561.8 m s | 1680ms | Open | Closed |
| > 20,000 feet | 1118.6 m s | 1680ms | Closed | Closed |
Note: All NICs on the network must have this option set the same. | |||||
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