Polaroid DCM 2 Online - Manual (Page 115)

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Setting Termination
The last device in a SCSI chain must be terminated (or have termination on), while all
other devices must be unterminated (or have termination off).
If the camera is the only SCSI device connected to your computer or the last device in
a SCSI chain, set camera termination to on (1). Otherwise, set termination to off (0).
Termination instructions for your other SCSI devices are provided with the devices
Note: Do not use an external, passive terminator to terminate the camera. If another
device is at the end of the SCSI chain, that device must be terminated with an active
terminator for proper camera operation.
Termination switch