Placer GPS 450 Series

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Placer GPS 450 Series
The Placer GPS 450 Series hardware allows you to track your vehicles reliably and efficiently, anywhere in the world.

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Overview
Features
Benefits
Options
Specifications

The Trimble Placer GPS 450 Series receivers allow you to reliably and efficiently track your vehicles, wherever they are in the world without user intervention. Providing position, speed, heading and time data, the Placer GPS 450 Series is designed to interface with personal computers, mobile data terminals, modems, data radios and other communication equipment over RS-232 interface channels.

The Placer 450 Series allows dispatchers or managers to schedule automatic vehicle location reports based on time and/or distance traveled; making it easy to get the information you need, when you need it.


  • 8-channel quick start receiver
  • Compatible with most CAD, GPS tracking and workforce management systems
  • User configurable reporting based on time, distance and time or polling
  • User-selectable interface protocols, including TAIP, NMEA and PPP
  • Direct connection to mobile computers and select RF data radio
  • Easy to read power on and satellite lock indicator lights
  • Rugged and compact
  • 455 DR model includes dead reckoning sensor for when intermittent loss of satellite signals is experienced
  • Integrates with the GPS tracking software you already have.
  • Configures to your company's needs
  • Flexible reporting options allow you to select the best method for your company
  • 455 DR calculates data when no GPS signal is available, giving you more complete information about your vehicle's location
  • Wireless laptop or direct RF radio connection capabilities means you're always connected to your mobile workers

Placer GPS 455
The Placer GPS 455 offers all the features found in the Placer GPS 450 plus Differential GPS (DGPS) capability. The Placer GPS 455 is also field upgradeable to add dead reckoning capability. The Placer GPS 455 circuitry combines GPS and DR to provide uninterrupted, reliable position reporting during periods when the GPS satellites are obstructed from view.

Placer GPS 455 DR
The Placer GPS 455DR offers all of the features found in the Placer GPS 455 plus a heading sensor for dead reckoning operation. The heading sensor is a piezoelectric, solid state gyro which provides the heading rate input required for the Placer to calculate dead reckoning (DR) based position data. The Placer is equipped with configurable conditioning circuitry to accept analog odometer and digital odometer signals. In addition, the Placer GPS 455DR is differential capable.


Physical Unit:

Electrical Specifications

  • Power consumption: 3.2 watts; 250 mA @ 13V typical
  • Memory 256 Kbytes

Interfaces

  • Ports:
    • Radio: RS-232 DTE
    • MDT (450/455)/RTCM (455): RS232 DCE(s)
    • Heading Sensor (455): Gyro, Odometer, Backup
    • Digital I/O
  • Message Formats: TAIP, TSIP, NMEA, RTCM
  • Comm. Protocols: CDPD, MAP27, (455) Transparent
  • Digital I/O: Input: 2 switch closure
  • Outputs: 2 300mA low-side drivers; status GPS; status PWR; 1 pps
  • Baud Rate: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400

Physical Specifications

  • Placer GPS 450/455r
  • Assembly Anodized sheet metal enclosure
  • Size 9" W x 3.75" D x 1.28" H 229mm W x 95mm D x 33mm H
  • Weight 450: 0.95 lb (0.43 kg)
  • 455: 1 lb (0.45 kg)
  • Connectors Antenna: SMB (female)
  • Ports 1–4: DB9
  • Power: DB9

GPS Specifications

  • Receiver L1 frequency, C/A code (SPS), 8-channel, continuous tracking (8 satellites), 455 is differential and DR capable
  • Update Rate Once per second; programmable up to 9,999 seconds
  • Accuracy*:
    • Position (2D 95%RMS)
    • Without DR: Non-Differential 15m, Differential (1/s) 5m, Differential (1/10s) 20m
    • With DR: Non-Differential 8m*, Differential (1/s) 3m, Differential (1/10s) 10m
    • Velocity: 0.1 meters/sec. (1sigma), non SA conditions
    • Timing pulse: UTC to nearest microsecond

    *All GPS receivers are subject to degradation of position and velocity accuracies under Department of Defense imposed Selective Availability (S/A). Position may be degraded up to 100 m 2 drms.

  • First Acquisition (typical)
    • Cold Start: 90 seconds
    • Warm Start: 30 seconds
    • Hot Back-up: 10 seconds
    • Reacquisition: 1 second
  • Datum: WGS-84

Heading Sensor

  • Gyro Piezoelectric vibrating beam gyro
  • Odometer Pulse 100 mV to 28V peak to peak square wave (user-supplied) analog or digital proportional to speed. Min. output: 2,000 pulses per mile. Recommended output: 8,000 pulses per mile

Environmental Specifications

  • Placer GPS 450/455 Heading Sensor
  • Temperature: Operating -40°C to +85°C, Non-Operating -55°C to +85°C
  • Humidity: 5% to 95% RH non-condensing at +40°C
  • Altitude: -400 to +5,000 meters
  • Shock: 40g for 11 milliseconds
  • Vibration: 0.008g2/Hz - 5Hz to 20Hz, 0.05g2/Hz - 20Hz to 100Hz, -3dB/Octave - 100Hz to 900Hz
  • Resistance: Splash proof and dust-proof