Finisar Surveyor manual Radio Buttons and Fields for Defining a Stream

Transmit Specification 8

Transmit Specifications

options available from the dialog box and click on the Add button. You can also add a capture file as a defined stream using the Add File… button. The added stream appears in the Defined Streams list box. Streams are transmitted by the module in the order in which they are defined.

A defined stream may be activated or deactivated by double-clicking on the stream. An activated stream has a check mark next to it in the Defined Streams list box and is highlighted with the Windows highlight color; a deactivated stream has no check mark and displays in the Windows inactive color. Only activated streams are loaded to the module when you click on the Load Module button. Before loading a module, make sure you have activated the streams you want.

Figure 8-1 on page 8-2 shows a synopsis of all streams defined for the Transmit Specification. In the example, three streams are defined and only two are activated. The stream highlighted in the highlight color set for Windows is the currently selected stream. Streams highlighted in the inactive color set for Windows are inactive. The settings for the currently selected stream show in the fields of the dialog box below the Defined Streams list box.

If you modify the values in the current stream and click on Add, a new stream is added as the stream after the currently selected stream in the Defined Streams list box. If you modify the values in the current stream and click on Modify, the definition of the current stream is changed.

Radio Buttons and Fields for Defining a Stream

Specify the contents and the size of the stream using the DA, SA, Packet Type, Packet Size, and Data fields. DA and SA values can be retrieved from the currently active name table using the Names… button. Random or sequential address generation is supported by selecting the appropriate radio buttons and using X values in the DA or SA field.

Sequence numbers (Start Seq# and Stop Seq#) are used to number the packets; packet numbering may be useful at the receiving end. When viewing packets at the receiving end, the default location for the two-byte sequence number is 32H and 33H. This value can be set in the Seq# Offset field.

Set the stream mode using the radio buttons and the Burst check box. The stream mode defines the rate at which packets are transmitted from a module and whether bursts of packets with a different rate will be transmitted within the stream.

Set the Repeat Streams field to repeat the stream more than one time. This setting specifies the number of times to repeat one complete stream – not how many times to repeat transmission of the entire specification, nor the number of bursts within

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