ITU-R is an international organization responsible for establishing international radio and telecommunications management systems and standards. Its predecessor was the International Telegraph Union, which was founded in Paris on May 17, 1865 and is the world's oldest international organization. Due to the long-term nature of the ITU as an international organization and its special status as a special agency of the United Nations, the standards issued by the ITU have a higher international recognition than most technical specification organizations of the same level. Years ago, the ITU developed a standard speaker placement guide for multi-channel systems.
We can refer to the ITU-R-BS.775 standard. ITU-R recommends placing the speakers with the position of the listener as a dot. Each speaker should surround the listener in a circle, and each speaker has the same distance. Based on the center speaker, the angle between the audience seat and the center channel is 0°, and the left front and right front speakers of the main channel are at an angle of 30° to the center speaker, and the left rear and right rear surround speakers are The center speaker has an angle of ±110~120°.
All speakers are centered on the audience position. Regarding the height of the speaker, the height of the center speaker, the left and right speakers, and the left and right surround speakers are the same. The tweeter on the speaker should be consistent with the listener's ear. That is to say, when we want to calculate the distance from the speaker to the seat, we should measure directly. The tweeter of the speaker and the position of the ear when the audience is sitting.
Although this ITU-R-BS.775 standard is very popular among professional home theater users, there are several other authorities that have developed speaker placements. We may wish to refer to their standards, such as Dolby, DTS, THX and Audyssey, these major institutions have deep definitions in 5.1 surround sound placement, and there are in-depth explanations on the configuration of 7.1, 9.1 and 11.2 surround sound. We may wish to make more reference comparisons to find out which one is right for you. Speaker configuration and placement.
Antenk extended its connector product range by SD card connectors. As already mentioned there are various applications, in the past driven by the computer industry, which are using memory cards as well in their end products, single sided pressure contact connectors can be designed and manufactured according to a customer specific requirement based on customer dedicated insulator- and contact dies. Such single sided pressure contact connectors are mainly used as board to board connection on the base of direct contact to the pads on the board.
Compact Flash Card Connector Overview
Store More Memories
Compact Flash storage cards are small, removable, mass-storage devices. They electrically comply with Compact Flash Association standards, the PC Card ATA standard, and run in True IDE mode. These 50-position cards typically hold between 32 MB and 2 GB of memory and are about the size of a matchbook. Antenk`s connectors include headers that can accept Type I (3.3mm thick) or Type II (5.0mm thick) storage cards, flush and raised mounting heights, and ejectors. Antenk Compact Flash card connectors also provide electrostatic discharge protection.Adapter for Compact Flash Card type I and II
Available with various ejectors
Different stand offs heights
Reverse type without stand-off height is not applicable to Compact Flash Card Type II
Compact Flash Card Connector Specification
Insulation Resistance: 1000MΩ at 500V DC
Withstanding Voltage: 500Vrms
Current Rating: 1A AC/DC max.
Contact Resistance: 40mΩ max. at 20mV max.
Operating Temp. Range: -55°C to +85°C
Reflow Solder Temp.: 220°C min. / 60 sec, 260°C peak
Mating Cycles: 10,000 times
Materials and Finish
Insulator: LCP, glass filled (UL94V-0)
Push Button: Glass reinforced PBT (UL94V-0)
SMT Metal: Brass, pure Sn
Pivot Shell: Stainless Steal
Contacts: Brass
Plating: Contacts - Gold (15µ[) over Nickel (40µ[), Solder Tails - pure Sn
Compact Flash Card Connector Product Features
Compact Flash Connectors
Robust surface-mountable designs
Proven PCMCIA contact technology
Accepts hardware for mechanical mounting
Top- and bottom-mounting styles
Right-angle and vertical orientations
Compact Flash Connectors Applications
Desktop and laptop computers
Digital cameras
Smart phones
Data recorders
Slot machines
Industrial and embedded computers
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