converting digital data to analog signal

... Introduction to Telecommunications, Winter 2000 Lecture-22 Digital Transmission Digital Transmission of Analog Data (Baseband Transmission): • Analog voice data must be translated into a series ... domain. To get back the original analog signal we have to convert back the sampled signal to its unique analog form. We could do it if we have taken enough samples of the original signal in ... an analog signal is converted to its digital form. • To obtain either form of pulse modulation we start with sampling. Sampling is the process of taking samples (amplitude) of an analog signal...

Ngày tải lên: 09/12/2013, 16:15

Ngày tải lên: 07/03/2014, 13:20

Ngày tải lên: 03/07/2014, 16:06

Ngày tải lên: 10/07/2014, 17:20

Ngày tải lên: 29/09/2013, 20:20

... the auto level is set to OFF. The module is monitored using the oscilloscope. Figure 5 A (a) Base Band transmission The functions of the different modules are explained below: Digital Signal ... detection process. This signal is useful in accurately measuring errors in detected data due to a communications channel. Figure 5 A (b) Block parameters digital signal source Summer: Page ... limiter Error Detector: The processed signal is compared with a sample of the signal source. For each data bit that does not match, a 10s pulse appears at the ERROR connector. Measuring the...

Ngày tải lên: 19/10/2013, 17:15

... The Objectives of this laboratory are: 1. To examine the frequency spectrum of an FSK signal. 2. To examine the correlation between two FSK signals. 3. To implement and investigate a coherent ... The input signal parameters A. The circuit was set up according to figure 6A shown below. It is a basic assembly to generate a FSK signal. Figure 6a Spectrum of a FSK signal – ... 1.75 1.75 e -03 LABORATORY PROCEDURE I. Spectrum of an FSK Signal : FSK involves frequency shifting a carrier between known fixed frequencies to convey digital data. Normally, FSK modulation...

Ngày tải lên: 23/10/2013, 15:15

... 5.3 Converting a DataReader to a DataSet Problem You need to transfer data from a DataReader to a DataSet. Solution Create a DataTable schema in the destination DataSet using the schema information ... the DataReader. Then, use the GetData( ) method of the DataReader to load each row of data into an array of objects, and add it to the DataTable using the Add( ) method of the contained DataRowCollection. ... pkCols.Add(col); dataTable.Columns.Add(col); } // Add the primary key to the table. dataTable.PrimaryKey = (DataColumn[])pkCols.ToArray(typeof(DataColumn)); // Add the table to the DataSet....

Ngày tải lên: 07/11/2013, 13:15

... selectors are used to select inbound traffic at the local, internal interface to encrypt and tunnel to the remote peer. In the reverse direction, the linkpath address selectors are used to decrypt ... access-list command statement address selectors in the crypto map are used to select outbound traffic from the internal interface to encrypt and tunnel to the remote peer. In the reverse direction, ... selectors are used to select inbound traffic at the inside interface to encrypt and tunnel to the remote peer. In the reverse direction, the linkpath command address selectors are used to decrypt outbound...

Ngày tải lên: 11/12/2013, 13:15

... recordset into a DataTable. OleDbDataAdapter oleDa = new OleDbDataAdapter( ); DataTable dt = new DataTable("Orders"); oleDa.Fill(dt, rs); // Bind the default view of the table to the ... void GetDataTypeInfo(SqlDbType sqlDbType, out String type, out String dbtype) [ Team LiB ] Recipe 5.10 Converting a DataSet to an ADO Recordset Problem You need to convert a DataSet to an ... Recordset is loaded into a DataTable using the OleDbDataAdapter. The default view for the table is bound to the data grid on the form to display the results of the conversion. used to define the schema...

Ngày tải lên: 14/12/2013, 18:16

... interest to product design, marketing and application support engineers at Analog. IMS’s CEO travelled to Boston to meet with manager of Analog s Central Applications function in order to discuss ... had to capture the technical understanding of application engineers and relate this to Analog s products and their attributes in order to build cases for the KATE-Tools platform. This activity took ... ported to the CD-ROM format for distribution to Analog s customers. The parametric search facility was first available on Analog Devices’ CD-ROM catalogue; subse- quently, the system was available to...

Ngày tải lên: 20/12/2013, 19:15

... Inc. Lab 1.2.4 Converting RIP v1 to RIP v2 Objective • Configure RIP v1 on routers. • Convert to RIP v2 on routers. Background/Preparation Cable a network similar to the shown in the ... 2600 or any such combination can be used. Please refer to the chart at the end of the lab to correctly identify the interface identifiers to be used based on the equipment in the lab. The configuration ... created. Step 2 Configure the routing protocol on the Gadsden router Go to the proper command mode and configure RIP routing on the Gadsden router according to the chart. ...

Ngày tải lên: 21/12/2013, 19:15

... "Customers to List Orders For:" ComboBox Name cboCustomers DataSource dsCustomerList.Customers DisplayMember CompanyName ValueMember CustomerID DataGrid Name dgOrders DataSource ... (CustomerID = ?) ORDER BY OrderDate DataSet Name dsOrdersForCustomer DataSetName dsOrdersForCustomer 3. Tip You will want to create the OleDbDataAdapter controls using the Data Adapter ... Name odaCustomerList SelectCommand OleDbSelectCommand1 CommandText SELECT CustomerID, CompanyName FROM Customers DataSet Name dsCustomerList DataSetName dsCustomerList OleDataAdapter...

Ngày tải lên: 24/12/2013, 06:17

... stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together, ... including Telefunken’s TOIM4232 and TOIM3232. At a minimum, a current-limiting resistor in series with the IRED and a VCC bypass capacitor are the only external compo- nents required to implement a complete ... communication link to PDA-Bot; in essence, it will be the spinal cord. PDA Robot responds to IrDA discovery requests and identifies itself as “generic IrDA.” I decid- ed to use an IrDA data link to the Robot...

Ngày tải lên: 24/12/2013, 14:16

... processes to produce other processes. The intentional operation on a signal produced by one process, an “input signal, ” to produce a new signal, an “output signal, ” is generally referred to as signal ... a digital link, noise in the digital link can cause errors in reconstructed bits, the bits can then be used to reconstruct the original signal within some fidelity. All of these operations on signals ... are virtually buried in noise added to them on route and in the front end amplifiers of the powerful receivers used to retrieve the signals. By suitably preparing the signals prior to transmission, by suitable filtering...

Ngày tải lên: 16/01/2014, 16:33

... tool to create data- binding [ Team LiB ] Recipe 7.1 Binding Simple Data to Web Forms Controls P roblem You need to bind a field of data to a server-side control. S olu t ion Use the DataBind( ... cmd.ExecuteScalar().ToString( ); conn.Close( ); } return companyName; } D iscussion Simple data binding binds an ASP.NET web control property to a single value in a data source. The ... (customerIdTextBox.Text != "") { // Create a command to retrieve the company name for the // user-specified customer ID. String sqlText = "SELECT CompanyName FROM Customers...

Ngày tải lên: 26/01/2014, 10:20

... Complex data- binding properties Property Description DataSource Gets or sets the data source that the control is displaying data for. Valid data sources include DataTable, DataView, DataSet, DataViewManager, ... interface. DataMember Gets or sets the table in the data source to bind to the control. You can use this property if the data source contains more than one table—a DataSet, for example. DataKeyField ... "CategoryName"; categoriesListBox.DataBind( ); } Discussion Complex data binding describes binding a multi-record control to multiple records in a data source. The DataGrid, DataList, and ListBox controls...

Ngày tải lên: 26/01/2014, 10:20

... { dataList.DataSource = CreateDataSource( ); dataList.DataKeyField = "Id"; dataList.DataBind( ); } } private DataTable CreateDataSource( ) { DataTable dt = new DataTable(TABLENAME); ... time. CreateDataSource( ) This method fills a DataTable with the TBL0703 table and stores the DataTable to a Session variable to cache the data source for the DataList. UpdateDataSource( ) ... a DataAdapter and uses it together with updating logic generated by a CommandBuilder to update the data source with changes made to the cached DataTable. The updated DataTable is stored to...

Ngày tải lên: 26/01/2014, 10:20

... dataGrid.CurrentPageIndex = e.NewPageIndex; // Bind the data view to the data grid. dataGrid.DataSource = dv; dataGrid.DataBind( ); } private void dataGrid_SortCommand(object ... // Bind the data view to the data grid. dataGrid.DataSource = dv; dataGrid.DataBind( ); } Discussion The DataGrid Web Form control retrieves tabular information from a data source and ... data. The DataGrid must be bound to a data source such as a DataReader, DataSet, DataTable, or DataView. Any class that implements the IEnumerable interface can be bound. The easiest way to...

Ngày tải lên: 26/01/2014, 10:20

Ngày tải lên: 14/02/2014, 16:56