UM1518 datasheet(30/37 Pages) STMICROELECTRONICS

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UM1518

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Table 3.

Ping session: Master tab parameters

Parameter

Type

Description

Electrical parameters of transmitting frames

Frame modulation

Control

Choice of modulation type for frames to be transmitted during Ping

session

TX frequency [Hz]

Control

Frequency value for frames to be transmitted during Ping session.

TX frequency set

(PHY configuration)

Control

Frequency value expressed in the box “TX Freq [Hz]” is written as

reception frequency in MIB object 01h (PHY configuration) in

accordance with the value (high or low) chosen by this switch. If a

combination of these two control values is not allowed, an error is

generated and Ping session doesn’t start.

TX Gain

Control

Selection of the TX Gain to be set for transmitting frames: it can be

used either the value stored in the MIB object 01h (“PHY Cfg”

selection for this switch) or a new one (“New” selection for this

switch) to be expressed in the value box which is overwritten in the

same MIB object.

Payload data

Type

Control

Selection for data composition of outgoing messages:

-”Fixed” is specified by the user in the box below

- “Random” is automatically generated by the GUI

Length value

Control or

indicator

Length [bytes] for the transmitting Payload

- automatically calculated by the GUI for Fixed Payload

- selected by the user for Random Payload

Random Payload

length

Control

Selection for Random Payload type only.

- “Fixed” sets the parameter “Length value” expressed in the left-

side box as fixed length for each transmitting frame;

- “Max” sets as the maximum length of each randomly generated

frame, whose length is not fixed;

Data

Control or

indicator

Data of Payload of outgoing powerline frame, displayed in

hexadecimal values only.

- filled in by the user in case of “Fixed” frame type selection and it

is a constant value for each transmitted frame;

-automatically displayed for “Random” frame type selection, its

value is different in each transmitting frame

Slave Destination

Address

Control

1- byte field (hexadecimal value) referring to the Slave Address

value. It is inserted by the GUI as the first byte of Payload field of

each DL_DataRequest built throughout the Ping session.

Number of frames

Indicator

1- byte field (hexadecimal value) automatically displayed by the

GUI. It displays the ordinal number of transmitted frame and it is

inserted by the GUI as second byte of Payload field of each

DL_DataRequest built throughout the Ping session.

Message settings

Total frames

Control

Number of powerline frames that the Ping session sends

throughout the Ping session

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