SCSI Description

NOTE

Step 4 requires that every device complete the arbitration phase to the point of SEL being asserted (for a SELECTION or RESELECTION phase) to avoid hanging the bus.

∙If a higher priority SCSI ID bit is true on the DATA BUS, the SCSI device loses the arbitration.

∙The losing SCSI device releases the BSY signal and its SCSI ID bit within one bus clear delay after the SEL signal asserted by the arbitration winner becomes true.

∙The losing SCSI device waits for the SEL signal to become true before releasing the BSY signal and SCSI ID bit when arbitration is lost.

∙The losing SCSI device returns to Step 1.

∙If no higher priority SCSI ID bit is true on the DATA BUS, the SCSI device wins the arbitration and asserts the SEL signal.

∙The winning SCSI device waits at least one bus clear delay plus one bus settle delay after asserting the SEL signal before changing any signals.

3.5.3SELECTION Phase

The SELECTION phase allows an initiator to select a drive to initiate a drive function.

The SCSI device that won the arbitration has both the BSY and SEL signals asserted and has delayed at least one bus clear delay plus one bus settle delay before ending the ARBITRATION phase. The SCSI device that won the arbitration becomes an initiator by not asserting the I/O signal.

During SELECTION, the I/O signal is negated so that this phase can be distinguished from the RESELECTION phase.

Quantum DLT 7000 Tape System

3-13

Page 76 Page 78
Page 77
Image 77
Quantum Instruments DLT 7000 manual Selection Phase
Page 76 Page 78

DLT 7000 specifications

The Quantum Instruments DLT 7000 is a state-of-the-art battery-powered light that brings advanced photography and videography offerings to professionals and enthusiasts alike. Renowned for its compact design, the DLT 7000 combines lightweight portability with powerful functionality. It is engineered to enhance the creative process by providing optimal lighting solutions in a variety of settings.

One of the standout features of the DLT 7000 is its innovative LED technology. This light source offers consistency in color temperature and output, ensuring high-quality illumination for both photo and video applications. The unit boasts an impressive color accuracy with a CRI (Color Rendering Index) rating that exceeds 90, making it ideal for capturing true-to-life colors in any situation. The DLT 7000 allows users to adjust the color temperature from a warm 3200K to a cool 5600K, catering to different lighting needs and environments.

Moreover, the DLT 7000 features a dimming function that allows for seamless adjustments from 0 to 100% brightness. This level of control not only aids in achieving the perfect exposure but also helps in creating the desired mood or atmosphere for a shot. The robust design of the DLT 7000 includes durable construction material that can withstand the rigors of location shoots, making it a reliable tool for professionals.

In addition to its lighting capabilities, the DLT 7000 incorporates smart technology. It is equipped with a built-in wireless control system that allows users to adjust settings from a distance, promoting flexibility during shoots. This wireless functionality extends to multiple units, enabling synchronized lighting setups for complex scenes.

Another notable characteristic of the DLT 7000 is its versatile power options. The light can operate on lithium-ion batteries, ensuring long-lasting performance during extended shoots without the constraint of power outlets. There is also an option for AC power, providing users flexibility in various shooting locations.

In summary, the Quantum Instruments DLT 7000 stands out with its combination of advanced LED technology, adjustable color temperatures, built-in dimming capabilities, and smart wireless controls. Whether for professional photography or videography, this light is designed to meet the demands of the most discerning artists, making it an essential addition to any lighting kit.
Top Page Image Contents