Tascam MX-2424 Instructions Manual

Also see for MX-2424: Release note Manual update Quick reference guide Install guide Optional Hardware Installation Guide

Contents

3SCSI TerminologyIt is important to understand some SCSI basics before adding drives to an MX-2424. The first step in thisunderstanding is familiarity with a few simple terms.SCSIStands for Small Computer System Interface. This is the data transfer method and physical connectionused by the MX-2424 for connection to hard drives and backup solutions.ThroughputThis is the amount of data transferred from one device/component to another in a specified time period.8-Bit Data TransferThis refers to data transfer between a SCSI device and the MX-2424’s processors and supportsthroughput of up to 20Mbytes/second. This should not be confused with the term “24-bit audio” whichrefers to the resolution of recorded audio.16-Bit Data TransferThis refers to data transfer between a SCSI device and the MX-2424’s processors and supportsthroughput of up to 80Mbytes/second. This should not be confused with the term “24-bit audio” whichrefers to the resolution of recorded audio.Ultra SCSI (Narrow)This type of SCSI device uses 8-bit data transfers and generally employs a 50-pin connector. An exampleof such a device would be the DVD-GF2050 DVD-RAM drive, offered by TASCAM as a backupsolution for the MX-2424.Ultra Wide SCSIThis type of SCSI device uses 16-bit data transfers and generally employs a 68-pin connector.LVD (Wide Ultra2 SCSI)Stands for Low Voltage Differential (also known as Ultra2 SCSI). This is the particular type of SCSIprotocol used by the MX-2424. LVD SCSI uses 16-bit data transfers and employs a High Density orVery High Density 68-pin connector. This allows throughput of 80 Mbytes/second.Low Voltage Differential (LVD) works by sending simultaneous pairs of data in a balancedconfiguration. Just like a balanced audio signal, the noise is rejected when the signals are summed.Because of noise rejection, the bus can operate at higher speeds and longer cable lengths. The MXprovides Ultra2/LVD performance on the internal and external bus.SCSI TerminatorThis is a special device that must be attached to the last device in a SCSI chain for the system to function.SCSI IDThis is a number that is set on each SCSI device in a SCSI chain, which identifies that device to the MX-2424.