Rainbow Electronics ATR0640 User Manual
Features
• ATR0640-EK users guide
• Evaluation board based on Atmel’s GPS Chipset
• Ashtech
logging
• An active, magnetic-based, GPS antenna with a 3 meter cable
• Cigarette lighter adapter
• 110VAC – 12VDC power adapter
• Serial Cable
®
Evaluate Software for performance monitoring and data-
Description
The ATR0640 GPS chipset is based on GPS technology licensed from Thales Navigation, a market leader in the GPS industry.
To ensure the ATR0640 chipset is right for your application, Atmel offers a low cost
evaluation kit. The ATR0640-EK evaluation kit comes in a sturdy carrying case and
provides all the tools necessary to evaluate the capabilities and performance of the
ATR0640 chipset.
ATR0640-EK Evaluation Kit Contents
Atmel BaldurTM
Evaluation Kit
ATR0640-EK
Preliminary
5105A–GPS–06/05
The GPS evaluation board is housed in a ruggedized plastic enclosure that can easily be used
for bench characterization or driving over the road. LEDs are visible to monitor the current system state. Data is transferred via an RS232 serial cable from the evaluation board to the serial
port on your PC via NMEA formatted messages. Every system comes with firmware already
loaded into the receiver, ready to plug and play. A 12V DC input is all that is required to power
the system.
Evaluation Board with Cover Removed
To evaluate the performance of the system, software is provided to monitor all aspects of the
system operation in real-time or by reviewing a data-logged file of a previous trip for later analysis. The graphic display shows information such as satellite tracking, strength of signal, position,
velocity and time.
ATR0640-EK and Accessories
2
ATR0640 [Preliminary]
5105A–GPS–06/05
Specifications
Table 1. Specifications
Characteristic Details Value
Autonomous (without corrections) 4.0m
ATR0640 [Preliminary]
Position Accuracy
Acquisition Time
Dynamics
Communication Standard NMEA–0183 V2.2 output messages $GGA, $GSA, $ZDA, $RMC, $GLL, $GSV
Electrical Characteristics
With WAAS/EGNOS/MSAS Corrections 2.0m
With DGPS Corrections 1.0m
Typical Acquisition Time
Typical Reacquisition Time < 1 sec
Sensitivity –145 dBm
Max. Velocity 425 m/s (951 mph)
Altitude –500m to +17,500m (–1600 to 57,400 ft)
Data Output Rate 1 Hz
Power (Reference Design) 35 mA, typ
Voltage
Back-up Power < 12 µA @ 25 C
GPS signal input, SIGI
Reference Clock Input
(1,2,3)
Hot Start < 10 sec
Warm Start < 45 sec
Cold Start < 150 sec
2.7 – 3.3 VDC, I/O ring
1.8V ±5% core logic
400 mV p-p (min)
800 mV p-p (typ)
1.8V p-p (max)
AC coupled
16.367667 MHz from RF section
400 mV p-p (min)
800 mV p-p (typ)
1.8V p-p (max)
AC coupled
Notes: 1. Cold − No Time/Position/Ephemeris
2. Warm − Estimate of Time and/or Position, Collecting Ephemeris
3. Hot − Up-to-Date Time/Position/Ephemeris
5105A–GPS–06/05
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