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MR-700T



Description


  • Quick start, 18 seconds warm start typical
  • Low power consumption (0.9W typical)
  • Wide supply voltages range (9~34VDC)

 

The AQTIME MR-700T is the integration of a timing GPS receiver and antenna in a compact/weather proof enclosure for time transfer application. It outputs UTC synchronized 1PPS with +/- 1 microseconds tolerance, which is close to an atomic clock in accuracy.

As a time transfer device, the AQTIME MR-700T is capable of operating with even 3(three) satellites after having a fix position with 3 or more satellites previously, so you can get precise time base anywhere on the Earth even under a very harsh environment where only one satellite is available.

Key Features:

  • UTC synchronized precise time base can be obtain anywhere on the earth at a relatively low cost
  • Ultra compact, fully weather-proof, easy to mount
  • Quick start, 18 seconds warm start typical
  • Continue to output time data with even one satellite tracked
  • Wide supply voltages range (9~34VDC)
  • Low power consumption (0.9W typical)

Applications:

  • Time Stamp Data Logger
  • Synchronization of radio base stations for cellular
  • Phone, pagers,...etc.
    Time control of computer terminals connected to network

1 PPS OUTPUT:

  • Output signal level:
    RS232 (std),
    RS422(optional)
  • Output data format:
    NMEA 0183
  • Accuracy:
    +/- 1 u second (2DRMS) to UTC
    adjustment

Specifications:

Specifications Parameter Description
General  
L1 frequency, C/A code(SPS),
12 Independent tracking channel
Sensitivity  
-143 dBm (tracking)
Accuracy
Position
15m CEP , 5m(waas)
Velocity
0.1 m/sec. 0.05m/s(waas)
Time
+/- 1 μs RMS (static mode)
Acquisition
Cold start
45 sec. (typical)
Warm start
38 sec. (typical)
Hot start
8 sec. (typical)
Reacquisition  
100 ms typical (signal reacquisition)
Dynamics
Altitude
18000m max.
Velocity
500 m/sec.
Vibration
4G max.
Operation Temperature  
-40°C to +85°C
Storage Temperature  
-45°C to +90°C
Operating Humidity  
0% to 95% RH, non condensing
Water Resistance  
100% waterproof
Primary Power  
9V ~ 34V DC
Power Consumption  
130mA
Protocol  
NMEA-0183 v3.0 baud rate 4800/9600/19200/38400/115200, default 4800
Signal level  
RS-232(standard),USB & RS-422 optional
NMEA Message  
GGA, GLL, GSA, GSV, RMC, and VTG
DGPS Capability  
Direct RTCM-SC104 interface
EMI filter  
Rejects power line interference
Power cable  
UL 2464 , 15M
Enclosure  
High impact, corrosion-proof polycarbonate resin
Connector  
open
Dimensions
GPS Locator
90.5mm(Dia.) x 108.5 mm(H)
Mounting Base
 
Weight  
200 grams
Standard Mounting  
Concinnity and Solid design
*This specification is subject to change without prior notice

User selectable datum *Pole mount to 1"-14 UNS threaded mast

MR700T 1PPS Specification
1. The signal is generated after the MR-600T power on and continues until power down.
2. The rising edge of the signal is synchronized to the start of each GPS second.
3. The signal is valid after the initial position fix has been calculated.
4. The accuracy of the one-pulse-per-second output is maintained only while the MR600T can compute a valid position fix.
5. The default pulse width is 1u second.
6. The pulse height is 3V.
7. The accuracy is +/- 1usec with respect to the GPS second.

Power Interface RS232:


I/O PIN & CABLE
Connector
Wire
Function
PIN1
White
Receive
PIN2
Green
Transmit
PIN3
Yellow
Ground
PIN4
Bare Braid
Earth
PIN5
Blue
1 PPS
PIN6
Black
Power-
PIN7
Red
Power+

RS422 I/O Connection

Connector
Wire
Function
PIN1
White (R+)
Differential input +
PIN2
Green (T+)
Differential output +
PIN3
Yellow (T-)
Differential output -
PIN4
To be detemined(R-)
Differential input -
PIN5
Blue
1PPS
PIN6
Black( - )
Power-
PIN7
Red(+)
Power+


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