Sensor - ashtech DG16 Reference Manual

1. Connect the female plug on the power cable to the J301 male connector on
the DG16.
2. Connect the power cable to the power supply.
Once power is connected, the LED on the DG16 Board flashes red.
When you apply power to the power input pins on connector J301, the DG16
starts operation.
When you remove power from the power input pins on connector J301, the DG16
stops operation.

Sensor

The power for the DG16 Sensor connects through the serial connector on the unit.
To avoid damage to the DG16, always connect to cable to the DG16 Sensor
before connecting the cable to the power source, and turn off the power
supply before connecting or disconnecting power to the DG16.
1. Connect the serial cable to the serial port on the DG16.
2. Connect the power cable to the serial cable.
3. Connect the power cable to the power supply.
Once power is connected, the LED on the DG16 flashes red.
Antenna
The DG16 is designed to work with an antenna Low Noise Amplifier (LNA) that
requires five volts and is isolated from DC ground. The gain of the antenna LNA
minus the loss of the cable is between 20 and 30 dB. Table 2.1 outlines the
antenna requirements.
Requirement
GPS Operational Band
Polarization Type
Axial Ratio
Antenna Gain for Elevation
Angle of 10°
Getting Started
CAUTION
Table 2.1. Antenna Requirements
1575 ±10 MHz
Right hand circular
Less than 3 dB in zenith of up area
No less than -2.5 dB
Parameter
23