NavCom SF-3050 Rev.I - Manual (Page 110)

SF-3050 GNSS Product User Guide – Rev I
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1 PPS
A pulse is available from the SF-3050 at an output rate of once per second. This pulse
can be used for a variety of Time/ Mark applications where relative timing is required.
Specifications:
 25ns relative accuracy
 Better than 100ns absolute accuracy
 5V TTL Logic level output
 1 PPS Output Impedance > 50 Ohms
 Pulse width, default 1mS
 Pulse delay, default 0mS
 Rising or Falling Edge Synchronization
Indicator Panel
Figure 105: SF-3050 Indicator Panel
The indicator panel provides a quick status view of the GNSS navigation/operating mode,
StarFire signal strength, the On/Off (I/O) switch, data I/O and logging, and Bluetooth
connectivity, respectively.
To power the unit on or off, depress the I/O switch for more than 2 seconds. All LEDs
illuminate for a period of 3-5 seconds during power-up of the GNSS sensor.

In this chapter, refer to the section, Proper Shutdown of SF-3050, for
details on powering off the unit.
 GNSS LEDs
Table 18: GNSS LED Indication
Icon Indicator Status Description
Power/GNSS
Off Power off
Red Power on but not tracking
Green
Blinking
Acquiring or tracking GNSS
satellites (no position fix yet)
Green
Using GNSS satellites
(position fix)