M2488 USER’S GUIDE INTRODUCTION
April 1997 CG00000-011403 REV. A 1-5
1-7.1 Data Transfer Rates
The data transfer rate is determined by the rate negotiated in synchronous data transfer mode. The
minimum transfer period supported is 100 ns. The transfer rate in asynchronous data transfer mode is
determined by cable length and hardware constraints.
Flush-mount Automatic Cartridge Loader
Initial Loading Time 30 seconds
Cartridge Exchange Time 40 seconds
Loading Time 20 seconds
Unloading Time 20 seconds
Ejecting Time 25 seconds
N
OTE
: All times listed are maximum values, actual times may be less.
* CHARACTERISTIC
DESCRIPTION
Access Time The time required to accelerate tape from a stopped condition until it is at speed
and positioned near the beginning of the next block.
Positioning Time The time to stop tape, reverse direction and position before the next block to be
read or written, stop, and accelerate to speed and position near the beginning of the
next block.
Rewind Time Period of time to rewind from the physical end of tape for wrap2 (PEOT), to the
beginning of tape for wrap 1 (BOT). The EOT rewind time is the period of time to
rewind from the physical end of wrap 1, end of tape (EOT), to BOT. Time may
vary with M2488 and cartridges used.
Power-on Time Period of time to complete initial power-on sequences and self test diagnostics
until the unit becomes ready. The nominal time is measured without tape in the
drive and no ACL or FACL attached. These conditions will increase the time
required for power-on.
Initial Loading Time Period of time after START is pressed until the magazine is loaded.
Cartridge Exchange Time Period of time from tape loaded at BOT until the next tape cartridge is loaded and
the tape drive is ready.
Loading Time Period of time from when a tape cartridge is retrieved from the magazine, until the
tape is loaded and the tape drive is ready.
Unloading Time Period of time from ready status at BOT until a tape cartridge is ejected and loaded
into the magazine.
Ejecting Time Period of time from ready status at BOT until the magazine is ready to remove.
Table 1-2. Performance Characteristics (Continued)
CHARACTERISTIC * PERFORMANCE
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