Quantum DLT 4700, Product Manual

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Firmware Update (From Tape)
7-2 DLT4000/DLT4500/DLT4700 Cartridge Tape Subsystem
7.2.1 Updating Firmware on a Standalone System
The user can update the subsystem, even when the subsystem is not attached to a SCSI
bus, that is, a standalone system. However, to perform an update, the Power-On Self-
Test (POST) must pass first, and to pass, POST needs a properly terminated bus.
The single-ended DLT4000 controller module has active terminators. Note the jumper
covering the two pins labeled on the etch: TRM PWR.
The differential DLT4000 controller module does not have on-board termination.