Xylem XL Series H-522 - Plus - Manual (Page 17)

XL™ Series
Hardware Options and Installation 2-3
2.2.4 GOES Antenna Output (Model H-522 and H-522Plus only)
This is the GOES antenna connector and uses an N-Type connector. The user will connect the
GOES antenna cable to this connector.
Note: Always connect an antenna or a dummy load to this connector when testing the integrated
GOES radio.
2.2.5 GPS Antenna connector (Model H-522 and H-522Plus only)
This is the GPS antenna connector. The user will connect the GPS antenna cable to this
connector.
When using the H-522 or the H-522Plus the GPS receiver will be built into the GOES HDR
radio. The H-522 and H-522Plus units shipping at this time have an Omnisat GOES radio from
Signal Engineering built into them. The GPS receiver will turn on and try to acquire the time
when power is applied to the unit. It will stay on until the time is acquired. Once the time is
acquired the GPS receiver will turn off and schedule the next update to happen in 25 hours and
15 minutes. This non repetitive time prevents the GPS receiver from continually failing due to
some external repeated condition. When the GPS receiver turns on to re-sync the time clock it
will try to do so for 30 minutes before giving up and waiting for the next day. If it misses a
single time sync the GOES radio will still transmit. The GOES radio will stop transmitting if
seven consecutive GPS time syncs have been missed. On the seventh time sync attempt the GPS
receiver will not power down after 30 minutes but will stay on trying to re-sync the time clock
and will only power down after it is successful.
When an Omnisat GOES radio is used externally with other XL Series data loggers the same
functionality will exist. This will be discussed in a later chapter.