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1Features
Preamp and Upper Analog Cards
A Preamp card (SPR card) contains preamplifier, motor, and write driver circuitry.
The Upper Analog card (SUA card in the
Together, the preamp and upper analog cards comprise the write and read electronics. The write electronics consist of write control circuits for digital data and servo information, as well as the write head driver circuits. The read electronics consist of preamplifiers and equalization circuits for the read channels, the servo channel, amplitude sensing, and data clocking and detection.
Lower Digital (SLD) Card
The Lower Digital (SLD) card contains the data processor, error correction code, buffer memory, and control circuitry. The tape drive’s data buffer includes 1 MByte of dynamic random access memory (DRAM).
The SLD card controls communication between the tape drive and the SCSI bus, and can be either of the following:
SLDS
SLDD (differential SCSI)
The SLD card contains a
Data compression SCSI bus management
SCSI command decode and status presentation Scheduling of all tape drive operations Motion control management
Data transfer and buffer management
Error recovery procedures Monitor interface
510504 | ||
| (Standard and XL) |
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