Protocol analysis
R&S
®
RTP
647User Manual 1337.9952.02 ─ 12
100BASE-T1 Specific Symbol Settings
Label lists are protocol-specific. Label lists for 100BASE-T1 are available in CSV and
PTT format.
A 100BASE-T1 label file contains two values for each ethernet header:
●
Ethernet Header Display
●
Symbolic label: name of the address, specifiing its function in the bus network.
Decode layer
Selects the decode layer.
Decoding is performed in several steps, and the end results are presented in the
decode table. The decode layer selects an interim step for which the decoding result is
shown in the honeycomb display.
"Off"
No decode layer is displayed.
"Ternary sym-
bols"
Decoded ternary symbols.
"Scrambled
bits"
Scrambled ternary bits.
"Descrambled
bits"
Descrambled ternary bits.
"Reversed
Bits"
Reserved bits
13.10.2.4 Configuring 100BASE-T1 signals
For configuration, assign the lines to the input channels and define the active states
and the logical thresholds.
For details on configuration settings, see Chapter 13.10.2.1, "100BASE-T1 configura-
tion settings", on page 643.
Serial bus setup
1. Press the [Protocol] key on the front panel.
2. Select the tab of the bus you want to set up, for example "SB1".
3. In the "Setup" tab, select the protocol: "100BASE-T1".
4. Select the type and source for the reversed and forward signal.
5. Select the polarity ("Normal" or "Inverted") of the signal.
6. Set the logical thresholds.
7. Enable "Decode".
Ethernet 100BASE-T1 (option R&S
RTP-57)
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