AGFA 1200 Owner's Manual page 28

If your scanner is the first external device of your SCSI chain
1 Set the scanner to an unused SCSI ID number between 0 and 6.
For more information, consult
2 Connect the 50-pin end of the SCSI cable to the connector of the next device in the SCSI
chain.
3 Snap the diamond shaped wire clips into the clip brackets to secure the connection.
4 Connect the 25-pin end of the SCSI cable to the connector of the scanner.
5 Tighten the connector screws to secure the connection.
6 Make sure that the last device in the chain is terminated.
Choosing a SCSI ID Number.
Chapter 2: Installing the Scanner 28