Xylem System 5000 User Manual - Manual (Page 58)

OUTPUTS
56
Self-Timed Data Setup
The Data Setup screen is determined by
the data format selected within the Data
Settings screen. Two available formats are
available for transmissions, SHEF (ASCII)
and Pseudo-Binary.
Both screens share the majority of options
with only a few specifics detailed below.
Common to both are the following options:
Tx Buffer
Displays the approximate used and
total number of bytes available for the
transmission. The total number of
bytes is calculated from the baud rate,
window length, and preamble. If any
of these values change, the buffer size
will also change. The number of used
bytes will vary based upon the added
Tasks (their Rate and Format), data
layout, data format , as well as other
Data Settings such as Redundant Data
Sets, SHEF Headers, and whether a
Battery
Scan is going to be appended. If
the total buffer size is exceeded, the
used number will be highlighted
in red. Excess data is truncated to
the maximum allowed in order for a
transmission to still be sent and not
overlap another transmission (or trip
the failsafe).
Tx Preview
This option generates the actual data that would be used if a transmission were to occur at this
very moment and displays the results. Note that some data may be missing as the measurements
have yet to be taken.
Radio Buffer
This option shows the buffer on the GOES Radio. As the buffer of a radio is only filled on the
scan just prior to the transmission, the radio buffer will generally remain empty (as once the
transmission is sent, the buffer is cleared again). This option can be useful to verify information
Shef (ASCII)
Pseudo-Binary