OSCILLOSCOPE

controls bUttoN

The CONTROL BUTTON of the Hameg HM 203-6 oscilloscope.

.screen: usually displays a V/t graph, with voltage V on the vertical axis and time t on the horizontal axis. The scales of both axes can be changed to display a huge variety of signals.

.on/off switch: pushed in to switch the oscilloscope on. The green LED illuminates.

.X-Y control: normally in the OUT position.
The X-Y control is used when you want to display component characteristic curves, or Lissajous figures.

.TV-separation: Oscilloscopes are often used to investigate waveforms inside television systems. This control allows the display to be synchronised with the televsion system so that the signals from different points can be compared.

.TIME / DIV: Allows the horizontal scale of the V/t graph to be changed.

.trigger controls: This group of controls allows the oscilloscope display to be synchronised with the signal you want to investigate.

.X-POS: Allows the whole V/t graph to be moved from side to side on the oscilloscope screen.

.X-MAG: In the IN position, the horizontal scale of the V/t graph is increased by 10 times. For example, if TIME/DIV is set for 1 ms per division and X-MAG is pushed IN, the scale is changed to 0.1 ms per division.

.CAL outputs: The top terminal gives a 0.2 V peak to peak square wave, while the lower terminal gives a 2 V peak to peak square wave, both at 50 Hz.

.component tester: The output socket provides a changing voltage which allows component characteristic curves to be displayed on the oscilloscope screen.

.Y-POS I and Y-POS II: These controls allow the corresponding trace to be moved up or down, changing the position representing 0 V on the oscilloscope screen.

.invert: When the INVERT button is pressed IN, the corresponding signal is turned upside down, or inverted, on the oscilloscope screen.

.CH I and CH II inputs: Signals are connected to the BNC input sockets using BNC plugs.

.VOLTS / DIV: Adjust the vertical scale of the V/t graph. The vertical scales for CH I and CH II can be adjusted independently.

.DC/AC/GND slide switches:

In the DC position, the signal input is connected directly to the Y-amplifier of the corresponding channel, CH I or CH II.

In the AC position, a capacitor is connected into the signal pathway so that DC voltages are blocked and only changing AC signals are displayed.

In the GND position, the input of the Y-amplfier is connected to 0 V. This allows you to check the position of 0 V on the oscilloscope screen.

The DC position of these switches is correct for most signals.

.trace selection switches: The settings of these switches control which traces appear on the oscilloscope screen.

http://www.doctronics.co.uk

Panasonic Plasma VIERA V-REAL

Panasonic Gobel Indonesia ( PGI) by launching to with refer to Flat TV [of] Panel Display ( FPD).


Excellence of new TV VIERA lay in technology of V-Real, that way the naming of newest technological innovation which developed by Panasonic for FPD. Technological this consist of three bodywork which have integrated in unit of VIERA that is VIERA V-Real Processor, VIERA V-Real Driver and of VIERA V-Real Panel.


Some reached for [by] appreciation [is] VIERA of its quality among others [is] " No. 1 Plasma of TV" of Gfk – Japan ( January 2006), " Best Choice HDTV for" of Consumer Report – USA ( November 2005), " Best Plasma of TV" of PC World – Latin [of] America ( August 2005), " 5-Star Rating" of What Video – UK ( August 2005), " Best Buy" of audiovision – Germany ( August 2005), and " Test Winner" of Audiovideobild – Germany ( November 2005).

http://new.rileks.com.

‘Super music phone’ (Model: SCH-B570)

The latest Samsung’s B570 comes with the cutting-edge technology which offers various functions and huge memory capacity. With the B570, users can enjoy music and even mobile TV anywhere.


The B570 allows users the world’s largest storage capacity for a handset with the built-in 8GB
hard disc drive which can store about 1,600 MP3 files (4MB/song) or 16 Personal Media Player (PMP) movies (400MB/file) or more than 20,000 digital photos (300K/file).
True to its name, super music phone offers sophisticated audio functions. The features such as ‘5.1-channel virtual stereo’, ‘echo effect’ enable users to obtain the same level of high quality sound that one gets from a 5.1 channel home theater system.
The B570 also supports ‘picture in picture’ (PIP) function which allows the users to watch satellite digital multimedia broadcasts and PMP movies simultaneously.

[ SCH-B570 Specifications ]
Standard CDMA 2000 1XEVDO
Camera 2 Megapixel Camera
Display 1.98“ 240x320 262K Color TF (Main)
Features 8GB Hard drive diskSatellite DMB / Picture In Picture / Personal Media PlayerMotion Recognition Technology/ GPSVOD/MOD/MP3Document Viewer/ Mobile printing/ TV out5.1 Channel stereo sound (EQ,3D Sound)
Size 112 x 48 x 19.9 mm
Weight 130 g

www.3g.co.uk

UMTS SERVICES



UMTS offers teleservices (like speech or SMS) and bearer services, which provide the capability for information transfer between access points. It is possible to negotiate and renegotiate the characteristics of a bearer service at session or connection establishment and during ongoing session or connection. Both connection oriented and connectionless services are offered for Point-to-Point and Point-to-Multipoint communication.

Bearer services have different QoS parameters for maximum transfer delay, delay variation and bit error rate. Offered data rate targets are:
· 144 kbits/s satellite and rural outdoor
· 384 kbits/s urban outdoor
· 2048 kbits/s indoor and low range outdoor

UMTS network services have different QoS classes for four types of traffic:
· Conversational class (voice, video telephony, video gaming)
· Streaming class (multimedia, video on demand, webcast)
· Interactive class (web browsing, network gaming, database access)
· Background class (email, SMS, downloading)

UMTS will also have a Virtual Home Environment (VHE). It is a concept for personal service environment portability across network boundaries and between terminals. Personal service environment means that users are consistently presented with the same personalised features, User Interface customisation and services in whatever network or terminal, wherever the user may be located. UMTS also has improved network security and location based services.

Source of news taken away from : www.umtsworld.com

CDG Draw Up Standard of Testing Terminal of CDMA

Community of CDMA will introduce a approach of standard for the examination of next year handset to labour acceleration entry of terminal of CDMA to market.


Executive Director of CDMA Development Group ( CDG), Perry Laforge, telling standard process of CDG, known as [by] Test of Phase 123, will also push to go up volume him of handset and aim at more price.


Laforge say that, standard of CDMA provide many flexibilitas. When each;every carrier take choice themselves, this non way of most efficient for smallest carrier


Leader Of Qualcomm Irwin Jacobs tell at the (time) of conference of press last month that this matter at least requiring time 9 months of moment follow the example of first chip to newest product [of] telephone marketed. He enhance, with complexity [at] development of telephone will cause development time will become longerly" He tell, that one of important innovation is to solve and system of software application into module and trying it separately, become they earn to be trusted [by] when them entered into a telephone.


Senior VP [at] development of strategy and business for the NOKIA,SOREN OF Petersen say that attempt [at] CDMA [is] boring something that and eat expense" Still there is no global attempt philosophy or regional to enable for quicker time to [go] to market. We have see some step, but they not yet fully can be accepted.


Source of news taken away from : www.wirelessasia.com.