Xylem System 5000 User Manual User Manual

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Outputs

the Transmit Rate determine the start of the transmit window. As an example, assume the

Transmit Rate is set to four hours (04:00:00) and the Transmit Time is set to 00:30:15. The

actual transmit times for a single day would then be 00:30:15, 04:30:15, 08:30:15, 12:30:15,

16:30:15, and 20:30:15. The duration of the transmission is determined by the amount of data

that is transmitted.

Window Length (sec)

Defines the length of time allowed to transmit data. The default is a 15 second window. Options

generally range from a 5 second to 1 minute window. The Window Length as assigned by NOAA.

The transmission may be set to start the transmission at the beginning of the window (default)

or to center the data transmission in the window. The Center Data option is available under the

Self-Timed Data Settings screen and should be set to Yes if centering is desired (default is No).
Self-Timed Data Settings and Data Setup can be accessed via the Settings and View/Edit buttons.

Self-Timed Data Settings

Data Layout

Data for a GOES transmission can have

a number of different layouts. Two

current options are available on the

System 5000: Default and Canada.

The Default layout is the same that

all WaterLOG data loggers use

(specifically the XL

™

series). The

Canada layout is a bit more specific

and forces certain options to achieve

the final layout. Both layouts are

described in more detail below,

including examples, with the Data

Order option.

Data Format

Self-Timed transmissions can be either a SHEF (ASCII) or a Binary format. The SHEF format uses

plain ASCII text and is easily readable, but takes longer to transmit the same amount of data. On

the other hand, Binary data is transmitted quicker, but the file will need to be decoded before it

can be read. If more data needs to be transmitted within the specified window, the Binary format

may have to be used. For more details on the Binary format, please refer to the

Understanding Binary Data section later in this chapter.

SHEF (ASCII)

Send data in a readable, plain-text ASCII format. For example, 15.26 means just that, 15.26.