Novus NR300, Руководство пользователя

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USERS MANUAL NR300
REVISION D
DATE 8/16/21
Page #: 42 of 48 www.novuspower.com
$GPNVS $PERDCFG,NMEAOUT
Same function as $NVS but uses format of GPS
Appendix A. Must include checksum.
Example: $PERDCFG,NMEAOUT,NVS,9,1*4B
sets $GPNVS,9 to output at a 1 second
frequency. For format usage, see Appendix A.
AUXILIARY
FREQUENCY
OUTPUT
$AUXFR=<INTEGER> $AUXFR=<INTEGER>
Sets the auxiliary frequency output. Even
integer devisors of 200,000,000 are
recommended. Remainders of the calculation
200,000,000/AUXFR are truncated. Enter
$AUXFR=0 to disable output. If disabled, allow
10 seconds for an enabled output to restart.
PPS
PULSEWIDTH
$PULSW=<INTEGER> $PULSW=<INTEGER>
Sets or returns the current PPS pulsewidth in
ms.
Range: 1 to 500 [ms]
RETRIEVE EVENT
LIST
$EVENT<nnn> $E,nnn,…
Request event record, starting at nnn. Outputs
the next 10 events after nnn with timestamp.
( Range: 0 to 512 )
EVENT TRIGGER
HOLDOFF
PERIOD
$HLDFF=1000 $HLDFF=1000
Set/Query holdoff period for Event triggering in
microseconds. If an event is triggered, the
holdoff period will elapse before another event
can be recorded.
( Range: 1 to 2000000 ) [us]
CLEAR EVENT
HISTORY
$CLREV $EVENTS_CLEARED
Clears all events from RAM, and starts event
record at Event 1.
ENABLE EVENTS $ENEV=1 $ENEV=1
Enable / Disable triggering of events and event
functionality. The unit will determine if events
are ready to be triggered based on GPS lock,
leap second, etc., but the user can use this as a
global disable function.
0 = Disable
1 = Enable
TRIGGER MODE
RISING/FALLING
EDGE
$EDGE=1 $EV_EDGE_DIR=1
Set trigger to be rising edge (1) or falling edge
(0). If falling edge is enabled, the input will be
pulled to 3.3V through a 100k resistor. If rising
edge is enabled, the event input will be pulled
down with a 100k resistor.
0 = Falling edge (3.3V 100k pullup)
1 = Rising edge (0V 100k pulldown)
TEMPERATURE
ALERT
THRESHOLD
$TMPAL $TMPAL=25.0
Set or query the temperature differential (in C)
which will trigger a Temperature Alert during
holdover.
FREQUENCY
ALERT
THRESHOLD
$FRQAL $FRQAL=1.0
Set or query the frequency error (in ppb) which
will trigger a Frequency Error alert. This is used
after holdover, when the GNSS lock has been
reacquired.