Apricot LS Pro Ethernet Connections

The Apricot LS Pro is supplied as standard with the following Ethernet connection options:-

15 pin AUI port (Thick Ethernet/10 Base 5)
BNC connection (Thin Ethernet/10 Base 2)
RJ45 socket (UTP/Unshielded Twisted Pair/10 Base T)

In order to select which mode the machine will use, there is a switch on the motherboard (SW1) that controls whether the system is using the AUI port or not.

Switch Position LEFT (nearest PSU) RIGHT (nearest memory)

Mode 'Thick' Ethernet 'Thin' Ethernet

With the switch set to 'Thick', the LS Pro will operate via a suitable device attached to the AUI port (typically a suitable transceiver). With the switch set to 'Thin', the system can use either the BNC connector OR the UTP connector. The system will select automatically to use BNC or UTP depending on what is connected. If a UTP cable is connected to the UTP socket, and the other end of the cable is also connected to a suitable device (for example a 10 Base T Concentrator hub), then the UTP interface is enabled. If there is no active link on the UTP connection, then the system defaults to using the BNC connector.

As shipped, the LS Pro should be configured by default with the 'Thin' Ethernet option set (therefore enabling BNC/UTP).

If an LS Pro system is failing to recognise a suitable Ethernet connection, the following should be checked before reporting the problem to Technical Support:-

Firstly ensure that SW1 is in the correct position.

If UTP or BNC is being used, SW1 should be set to the RIGHT, whereas if AUI is being used, the switch should be to the LEFT (see above).

If using 10 Base 2 (Thin Ethernet/Cheapernet) cabling via the BNC connector, ensure also that there is no UTP connection made (as the UTP connection takes priority over the BNC connection), and that 10 Base 2 cabling (50 ohm) is being used.

If UTP is being used, ensure that both ends of the cable are correctly inserted into the relevant devices (the LS Pro and the concentrator).

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