System.Data.SqlClient.SqlException: 建立連接至 SQL Server 時，發生網路相關或執行個體特定的錯誤。找不到或無法存取伺服器。確認執行個名稱是否正確，以及 SQL Server 是否設定為允許遠端連線。 (provider: 具名的管線提供者, error: 40 - 無法開啟至 SQL Server 的連接)
於 System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
於 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj)
於 System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, SqlConnection owningObject)
於 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject)
於 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart)
於 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance)
於 System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance)
於 System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection)
於 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options)
於 System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject)
於 System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject)
於 System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject)
於 System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection)
於 System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory)
於 System.Data.SqlClient.SqlConnection.Open()
於 DreamweaverCtrls.DataSet.DoInit()
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◎ 說明

 RSP2-175
一. 原外接接收器線材五米長可經由三芯隔離線作延長至五十米長。
二. 如延長線為二芯隔離線亦可將外接接收器線材之訊號線(紅色)與地線(銅色)作延長，而另一條電源線(白色)之電源將由外部來提供。
三. 外部提供給外接接收器的電源規格應為5V ±0.3V的範圍內。
四. 當外接接收器作延長時亦可將訊號線(紅色)與地線(銅色)接至有BMB碼之放大器內作為控制放大器音量用。