Led Indicators; Figure 2-4 Port B Interface; Table 2-5 Led Indicator Definition - CSI Wireless Vector Sensor Reference Manual

Refer to Appendix B for further interfacing information.
Note - For successful communications, the baud rate of the Vector Sensor serial ports
must be set to match that of the devices to which they are connected. Chapter 6
describes the baud rate change command.

2.8 LED Indicators

The Vector Sensor features diagnostic LEDs located on the front panel that provide a quick
indication of module status as described in the following table.
Table 2-5 LED Indicator Definitions
LED Color
PWR Red
PRIM GPS Orange
SEC GPS Orange
DIFF Yellow
DGPS Green
Heading Blue
Vector Sensor Reference Manual
SERES Port B

Figure 2-4 Port B Interface

Function
Power indicator - when the Vector Sensor is powered, this LED will
illuminate
Primary GPS lock indicator - this LED will blink a few times on startup
before the lamp test. Once the primary GPS achieves a solid lock, this LED
will remain illuminated.
Secondary GPS lock indicator - this LED will blink a few times on startup
before the lamp test. Once the secondary GPS achieves a solid lock, this
LED will remain illuminated.
Differential lock indicator - This indicator will illuminate continuously when
the Vector Sensor has achieved a solid SBAS lock with better than a 150
bit error rate (BER) or when it is successfully receiving externally input
RTCM corrections. If the SBAS BER is higher than 150 but the receiver is
still locked, this LED will blink, showing that lock is marginal.
DGPS position indicator - this LED will illuminate when the receiver has
achieved a differential position and the psuedorange residuals are below
that set with the $JLIMIT command. The default value is a psuedorange
residual of better than 10.0 meters. If the residual value is worse than the
current threshold, the green DGPS LED will blink indicating that
differential mode has been attained but that the residual has not yet met
the threshold.
Heading indicator - this LED will illuminate when the Vector Sensor has
computed an accurate RTK-based GPS heading.
External Device
GND
5 GND
6 Event Marker
NMEA/Binary/
3 RX TX
RTCM
NMEA/Binary/
2 TX
RTCM
RX
1 PPS
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