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Software version 2.07 upgrades
This section describes several software enhancements made in
upgrading the 941 software version 2.06 to software version 2.07.
Please note that all of version 2.07's enhancements apply to each
later software version, including versions 2.10, 3.12, and 3.18 as
described later in this addendum.
New NMEA output sentence
Northstar has added a new sentence to its NMEA 0183 output
format. The purpose of this new NMEA sentence, "MSS" (MSK
Receiver Signal Status), is to provide status information for the
beacon receiver's signals (the 941 sends a null sentence if the
beacon receiver isn't installed). This status information includes
beacon bit rate, frequency, signal-to-noise (SNR) ratio, and signal
strength.
For details about turning on this sentence, see page 118 of the
941 Reference Manual. There, you'll see a sample screen that
displays the NMEA 0183 sentences; however, version 2.07 will
display the additional MSS sentence in your unit's actual list. For
further information about NMEA sentences, refer to the National
Marine Electronic Association (NMEA) 0183 Specification.
NMEA 1-Hz output
Version 2.06 normally used the standard NMEA two-second
interval for outputting NMEA sentences (a 0.5-Hz output rate).
Version 2.07 lets you use one-second intervals, a rate of 1 Hz,
under limited circumstances, for NMEA and diagnostic data
output.
NMEA output
Using the 1-Hz output option, however, requires some thought
when specifying either NMEA 0183 (NMEA version 2.0) or
Raytheon (RAY 0183). Since there isn't enough time to transmit
all available NMEA sentences within one second, you must select
for output only those that are needed. If you select more
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Addendum P/N GM210
032101
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