Garmin GPS 35-HVS

 

Visit Garmin's GPS 35-HVS web page.

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GPS 35 Series
Specifications
Performance
Receiver: Differential-ready 12 parallel channel receiver tracks and uses up to twelve satellites to compute and update a position.

Acquisition Times:

  • 15 seconds warm (all data known)
  • 45 seconds cold (initial position, time and almanac known, ephemeris unknown)
  • 5 minutes AutoLocate (almanac known, initial position and time unknown)
  • 5 minutes search the sky (no data known)

  Update Rate: 1 second, continuous (programmable from 1 second to 15 minutes)

Accuracy:

  • Position accuracy:
  • Differential GPS (DGPS): 5 meters RMS
  • Non-differential GPS: 15 meters RMS (100 meters with Selective Availability at maximum)

Velocity accuracy: 0.1 m/s RMS steady state (subject to Selective Availability)

Dynamics: 999 knots; 6g's

Interfaces:

  • Dual-channel RS-232 compatible with user-selectable baud rate (1200, 2400, 4800, 9600)
  • NMEA 0183 version 2.0 ASCII output (GPALM, GPGGA, GPGSA, GPGSV, GPRMC, GPVTG, PGRME, PGRMT, PGRMV, PGRMF, LCGLL, LCVTG)

Inputs:

  • Initial position, date, and time (not required)
  • Earth datum and differential mode configuration command, almanac

Outputs:

  • Position, velocity, and time
  • Receiver and satellite status
  • Differential reference station ID and RTCM data age
  • Geometry and error estimates

Raw measurement output for both psuedorange and phase data
PWR_DN power down power management under logic level control
Real-time Differential Correction input (RTCM format)
PPS (pulse per second) output

Antenna: Built in

 

Physical
Size: 2.22" (w) x 3.79" (l) x 1.05" (h) (56.4mm x 96.3mm x 26.7mm)

Weight: 3.88 oz. (110 g), not including cable

Environmental:

  • Operating Temperature: -30°C to +85°C (internal temperature)
  • Storage Temperature: -40°C to +90°C
Power
Input Voltage:
  • 6 to 40 VDC, unregulated
  • Typically draws 80 mA @ 12 VDC

Backup Power: Internal rechargeable 3V Lithium coin cell battery , up to 10 year life

 

Specifications are subject to change without notice.

 

About Pulse-Per-Second output (from technical spec chap. 4.4)

4.4 One-Pulse-Per-Second Output

The highly accurate one-pulse-per-second output is provided for applications requiring precise timing
measurements. The signal is generated after the initial position fix has been calculated and continues
until power down. The rising edge of the signal is synchronized to the start of each GPS second.
Regardless of the selected baud rate, the information transmitted by the GPS 35LP receiver is
referenced to the pulse immediately preceding the NMEA 0183 RMC sentence.
The accuracy of the one-pulse-per-second output is maintained only while the GPS 35LP can compute a
valid position fix. To obtain the most accurate results, the one-pulse-per-second output should be
calibrated against a local time reference to compensate for cable and internal receiver delays and the
local time bias.
The default pulse width is 100 msec, however; it may be programmed is 20 msec increments between 20
msec and 980 msec as described in $PGRMC Section 4.1.3 character <13>.

 

University of Bergen, Norway
Institute of Solid Earth Physics
Last update: 24. august 2000 (OM)