YSI WaterLog Series, Руководство пользователя

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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 Water
LOG data loggers use (specifically the XL series). The Canada layout is a
TM
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.
Pseudo-Binary: Send data using a 1-4 character coded sequence for each value. For
example, 15.26 would be represented as a 3-byte, 2-precision value
would be @Wv. See the GOES Pseudo-Binary Look Up Table
later in this chapter for instructions on decoding these values.
Binary data will be preceded with the characters “BST” for binary
scan ordered data transmissions or with “BCT” for binary channel
ordered data transmissions.
6-14 Outputs
System 5000
TM