
HomePlug Turbo:
Datarate
BYTES
PHY
per sblock
=
×
×
336
8
40 8 4
μ
.
/Mbit s
where Bytes
per336 sblock
represents the number of bytes in a data block at the physical layer level
of duration 336 μs.
As we have seen in Chapter 8, there is a difference between the physical data
rate and the useful throughput for the user. Table 9.2 gives an estimated correspon-
dence between these two data rates since HomePlug PLC configuration tools only
indicate the physical data rate for the user.
Among the various HomePlug 1.0 and Turbo PLC configuration tools, let’s
mention the following tools that differ in their interfaces and user friendliness:
•
MicroLink dLAN from MicroLink Informer from Devolo AG. The first one
is used for configuring the PLC network and the second one for checking the
network status.
•
PowerPacket Utility from Intellon. This enables the same parameterizations
as the Devolo tool using various tabs for the various configuration operations
(NEK of the PLC logical network illustrated by Figure 9.1, main tab for man
-
Configuring a HomePlug 1.0 or Turbo Network 181
Table 9.1 HomePlug Parameters Visible by Configuration Tools
HomePlug PARAMETER INDICATIONS
Bytes per 40 symbols
Number of bytes per block with 40 OFDM symbols (used for
calculating the estimated PHY data rate for HomePlug 1.0)
Bytes per 336 us Block
(for HomePlug Turbo)
Number of bytes per 336-ìs block (used for calculating the
estimated PHY data rate for HomePlug 1.1 Turbo, sometimes
called Viper)
DATA_TX_COUNT Transmitted data number counter
FAILS Received Number of received FAIL type frames
Frame Drops Number of lost frames
ACK Counter Number of sent ACK type frames
NACK Counter Number of sent NACK type frames
FAIL Counter Number of sent FAIL type frames
Contention Loss Counter Number of lost contention frames
CA0 Latency Counter
Total number of milliseconds between receipt of a CA0 frame
sending request and successful access to transmission channel
CA1 Latency Counter
Total number of milliseconds between receipt of a CA1 frame
sending request and successful access to transmission channel
CA2 Latency Counter
Total number of milliseconds between receipt of a CA2 frame
sending request and successful access to transmission channel
CA3 Latency Counter
Total number of milliseconds between receipt of a CA3 frame
sending request and successful access to transmission channel
Cumul Bytes per 40 Symbols
Packet Counter
Cumulated received frames in number of 40 OFDM symbols
MAC Address MAC addresses of other PLC devices on the same network
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