In the DLT tape drive the connection is made by the processor along with the SCSI-interface and the communication is done with the outside world through the “Data interface”. The incoming data is converted to SCSI-bit stream by the Pentium processor, and then the DLT tape drive records it in the “native format”.
The DLT tape drive has the technology and is designed to support the different interfaces of single & multi channel. Both the digital and analogue interfaces are supported by the DLT tape drive. So even in the initial stage of data collection, the DLT tape drive provides the compatibility. Therefore, the DLT drive solves the issue of compatibility. The data recorded in the SCSI-format makes the integration easy and therefore, it can be used like the other devices that are SCSI compatible. The connection is made directly by the analysis computer with the external SCSI-port of the unit itself. The data either digital or analogue can be the output through the “data interface”.
In the DLT drive from all the sub-assemblies that are unwanted, the peripheral strips off. In the front top of the tape recorder’s case is a closed compartment where the bare bones are mounted. The weight & size has been reduced because the drop down door has been doubled as “Display Panel” & “Integral Control”. At the back of the DLT recorder case is a separate compartment that is used for mounting the “electronic modules”. The modules that are active & installed determine the function of the DLT tape recorder.
Cool air is drawn from the back of the unit by the fan that is mounted to “central-bulkhead” of the drive. This cool air flows over the electronic modules and then it moves over the “Peltier device”. This device is attached at the base of DLT drive’s compartment. Below the control panel is “mounted grill” from where the cool air is exhausted out. Power supply (line-tolerant) of high grade is used in the DLT tape drive. The data interface has a large buffer for both input & output. During the recording both the discontinuous & continuous data rates from the real world are decoupled by the large buffer. This large buffer also allows the “analysis device” to move the data during the replay.
This overall interaction is very complex and the Pentium controls this overall interaction. The DLT tape drive has powerful features of “correction strategy” and “input to output error detection”. In order to take maximum advantage from the rewrite and read after write features of the tape drive, the drive selects the transfer speed of either 12 MB/second or 40 MB/second. It is made sure that the recorded data is free from errors.
The RAM (non volatile) holds the “control programs” and the standard “RS 232 port” can be used to modify and update the control programs. MS terminal can be used to fit the modem with in the tape drive for finding the faults or the “remote control”.
For the protection of the weakest links of the system, the tape drive is thermally & physically isolated and then it is fitted to the “control system” of the temperature.
The DLT tape drive also has the advanced feature of “Heat-dissipation system”.
The other components like the cables, connectors are selected that are robust and are able to deliver the best results in the extreme conditions. The DLT recorders are also used with the applications of “analogue & digital acquisition”. The digitization of the analogue data is done on eight or the sixteen bit sampling. In parallel, both the digital & analogue modules can be used.
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