113
Event Marker Input
This input is used to time-tag external events. When an
external event is detected on this input, the corresponding
GPS time for this event is output as a $PASHR,TTT message
on any port. The time tag provided in the message represents
the exact GPS time of the event to within 1 μsecond. A single
message is output for each new event.
Using the event marker input is a standard feature of the
receiver (no firmware option needed).
The event marker input is available on port B, pin 7.
You can choose whether it will be the rising or falling edge of
the event marker signal that will trigger the time tagging of
the event. This choice can be done using the $PASHS,PHE
command.
The signal specifications of the event marker input are as
follows:
• Signal level: ± 10 V
• Permitted transient time on active edge: < 20 ns
Resetting the
Receiver
With the SP90m turned off, press the two horizontal arrow
keys (right and left) AND the Power button simultaneously for
a few seconds until the power LED turns green.
This starts the receiver. The screen first displays the Spectra
Precision logo, then
Reset mode
is displayed for a while. At the end
of this sequence, all receiver factory settings have been restored.
The following parameters, functions and devices are not
impacted by the reset sequence:
• Last ephemeris data saved in the receiver (except for
SBAS data)
• Last almanac data saved in the receiver
• Last position and time computed by the receiver
• Anti-theft status and parameters
• Startup protection status and parameters
• Ethernet device power status (will remain ON if it was ON
before, or OFF if it was OFF) as opposed to all other
devices (WiFi, Modem, Bluetooth)
• All settings (PIN code, APN, login, password, etc.)
relevant to modem, Bluetooth, WiFi, Ethernet, Web Server
• SMS phone list, email address list and settings
• Automatic power-on and power-off settings
• Receiver validity period.
