1) Allow UltraBlocks to be field-switched between read-only and read-write operation.
2) Allow end users to set the bridge's configuration for optimal use with their equipment.
In Write Protect mode, the UltraBlock will prevent ANY and ALL writes from reaching the attached device. It is compatible with all Windows 98se, Windows ME, Windows 2K/XP, and any O/S that supports IEEE 1394 and has a compliant card and drivers.
In Read/Write mode (non-Write Protected), it can be used to attach a drive to be used for receiving images on your FireWire chain.
The UltraBlock is shipped by default in a Read-Only (write blocking) configuration. However, they can be configured to enable Read-Write operation as well*. To prevent unwanted alteration it necessary for the customer to make a modification to the housing to enable the Read-Write operation.
SWITCH 1 OFF = Read Only (write blocking enabled) ON = Read/Write
SWITCH 2 OFF = Unit reports errors if writes are attempted ON = Unit suppresses errors if writes are attempted
SWITCH 3 OFF = Unit reports Write-Protect (WP) status in code page ON = Unit supresses Write-Protect (WP) status in code page
SWITCH 4 Reserved
* The UltraBlock USB and UltraBlock Firewire cannot be switched to Read/Write mode. They were designed to be permanently Write Blocked.