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A Wangdat 3900 is an internal DDS3 DAT drive with a 12/24Gb capacity. It is 3.5" sized as standard, a 5.25" fixing kit and bezel is available as an option. The Wangdat 3900SE (the external version) is also available.
The following tables and notes give a quick guide in setting up the Wangdat 3900 12/24Gb.
The notes explain the setting of the 16 pin jumper block.
|Jumper Block||Jumpered Value||No Jumper Value||Default Settings|
|Pin Pair 1 & 2||SCSI ID 4||SCSI ID 0||
|Pin Pair 3 & 4||SCSI ID 2||SCSI ID 0||
|Pin pair 5 & 6||SCSI ID 1||SCSI ID 0||
|Pin Pair 7 & 8||Compression Disabled = 12Gb||Compression Enabled = 24Gb||
|Pin Pair 9 &10||Enables SCSI Parity||Disables SCSI Parity||
|Pin Pair 11&12||Factory Use Only - Do not jumper||Factory Use Only - Do not jumper||
|Pin Pair 13 &14*||Terminates the drive||No.termination||
|Pin Pair 15 &16**||SCSI bus Termination Power||No termination power||
NB.You can choose any SCSI ID value from 0 to 7. See table
To do this the pin pairs 1&2, 3&4 and 5&6 from the 16 pin jumper block are arranged in various ON OFF combinations.
So for example SCSI ID 5 would be ON OFF ON (4 + 0 +1 = 5).
|Jumper Block||Pin Pair 1 & 2 (Value = 4)||Pin Pair 3 & 4 (Value = 2)||Pin Pair 5 & 6 (Value = 1)|
|SCSI ID VALUE 0||OFF (No Jumper)||OFF (No Jumper)||OFF (No Jumper)|
|SCSI ID VALUE 1||OFF (No Jumper)||OFF (No Jumper)||ON (Jumpered)|
|SCSI ID VALUE 2||OFF (No Jumper)||ON (Jumpered)||OFF (No Jumper)|
|SCSI ID VALUE 3||OFF (No Jumper)||ON (Jumpered)||ON (Jumpered)|
|SCSI ID VALUE 4||ON (Jumpered)||OFF (No Jumper)||OFF (No Jumper)|
|SCSI ID VALUE 5||ON (Jumpered)||OFF (No Jumper)||ON (Jumpered)|
|SCSI ID VALUE 6||ON (Jumpered)||ON (Jumpered)||OFF (No Jumper)|
|SCSI ID VALUE 7||ON (Jumpered)||ON (Jumpered)||ON (Jumpered)|
*Termination - The pin pair 13&14 controls drive termination. The Wangdat 3900 must be terminated, by jumpering pin pair13&14, if it is either a stand alone unit, or last in a chain of devices. (The default setting is for the pins to be jumpered).
**SCSI Bus Termination Power - The pin pair 15 & 16 controls the drive's termination power, a
jumper on this pin pair connects termination power to the SCSI bus. When jumpered
termination power is supplied by the drive, without a jumper the power is supplied by the
host. (The default setting is for the pins to be jumpered).
The Wangdat 3900 12/24Gb needs to be connected to a SCSI controller card. A low cost card, such as an Adaptec 1505, is suitable for this task. However the Adaptec 1505 will only control the one SCSI device.
|OFF||No drive activity on the SCSI bus.|
|ON||Drive activity on the SCSI bus.|
|FLASHING||Drive moving tape.|
|Tape Cartridge Status (Center)
||OFF||No tape cartridge in drive.|
|ON||Tape cartridge in drive.|
|FLASHING||Tape cartridge loading or unloading.|
|FLASHING||Tape cartridge high soft error rate (clean drive or replace cartridge).|
|Self test failure.|
|120 Metre||125 Metre||To back up 24Gb (compression ON) on a Wangdat 3900 a 125 metre cartridge is used, if compression was OFF a 12Gb capacity would be acheived. Inserting a 120 metre cartridge gives a 8Gb compressed and 4Gb native capacity. Inserting a 90 metre cartridge gives a 4Gb compressed and 2Gb native capacity. Inserting a 60 metre cartridge gives a 2.6Gb compressed and 1.3Gb native capacity.|
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