System information

46 The Capture Menu
• “Expand 2nd level trees” checkbox—when selected, causes the tree decode
display to expand all second level trees.
• “Expand 3rd level trees” checkbox—when selected, causes the tree decode
display to expand all third level trees.
• “Expand 4th level trees” checkbox—when selected, causes the tree decode
display to expand all fourth level trees.
• “Use EBCDIC for displaying SNA data (use ASCII otherwise)” checkbox—in
the event that the packet contains SNA (Service Network Architecture) data,
selecting this box causes Observer to use EBCDIC (Extended Binary-Coded
Decimal Interchange Code) for representing characters as numbers when
displaying SNA data. EBCDIC is used almost exclusively on IBM computers.
• “Use EBCDIC for displaying all data (use ASCII otherwise)” checkbox—when
selected, Observer uses EBCDIC (Extended Binary-Coded Decimal Interchange
Code) for representing characters as numbers when displaying all data. EBCDIC
is used almost exclusively on IBM computers.
• “Bytes Per Row in Hexadecimal Display” radio buttons—Choose 16 or 10 bytes
per row.
• Packet timing display resolution dropdown—allows you to select the packet
timing display resolution.
Packet View Settings – Custom Application Ports Tab
• “Auto determine protocols by bit patterns” checkbox—when selected, Observer
will attempt to analyze the RTP and RTCP packets and automatically use the bit
patterns to attempt to determine which protocols are contained in the capture
buffer.