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Trimble 4700/5700/R7 - RTK Cheatsheet

Trimble 4700/5700/R7 - RTK Cheatsheet

The following are suggested settings for most UNAVCO-supported RTK surveys. For a detailed how-to on RTK surveys, see Trimble 4700/5700/R7 - How to execute a real-time kinematic (RTK) survey from start to finish (http://kb.unavco.org/kb/questions/617/).

Things to know before and during the survey:

Base GPS antenna type: _____________ (usually Zephyr Geodetic)

Rover GPS antenna type: _____________ (usually Zephyr or Zephyr Geodetic)

Base GPS antenna height measurement method: _____________ (usually "Bottom (or Top) of notch" or "Bottom of antenna mount")

Rover GPS antenna height measurement method: _____________ (usally "Bottom of antenna mount")

Base station coordinates: _____________ N/S latitude, _____________ E/W longitude, _____________ height (meters)

In the job:

Coordinate system: Yes choose one, e.g. the appropriate UTM zone: [link]. Datum: WGS 1984, Use geoid model: No, Use datum grid: No, Project height [enter approximate average survey elevation], Coordinates: Grid.

In the survey style:

Select "RTK" if you don’t need raw data or "RTK & infill" if you do.

Rover options

  • Logging device (RTK & infill only): Controller

  • Auto file names ("RTK & infill" only): Yes

  • Logging interval ("RTK & infill" only): depends on survey goals; usually 1-15 seconds

  • Broadcast format: CMR+ [MUST be the same as the Broadcast format in Base options]

  • WAAS: Off

  • INS position: RTK only (TSC1)

  • Use station index: Any

  • Prompt for station index: Yes

  • Satellite differential: Off (TSCe)

  • Elevation mask: 13 00’00"

  • PDOP mask: 6 (but can be more, e.g. 20)

  • Antenna height, Type, and Meas. to can be modified during the survey

Rover radio

  • Type: Trimble internal, Trimble 450/900 if using the UNAVCO EAR RTK set

  • Route through controller: Leave blank (TSCe)

  • Receiver port: Port 3

Base options

  • Logging device (RTK & infill only): Receiver

  • Auto file names (RTK & infill only): Yes

  • Logging interval (RTK & infill only): Must be at least as frequent as rover, e.g. 1-15 seconds

  • Broadcast format: CMR+ [MUST be the same as the Broadcast format in Rover options]

  • Output additional code RTCM: No/blank

  • Station index: 29

  • Elevation mask: 13 00’00"

  • Antenna height, Type, and Meas. to can be modified at survey start

Base radio

  • Type: TRIMMARK 3 if using the UNAVCO EAR RTK set. Pacific Crest if using the UNAVCO OPP equipment

  • Controller port: COM1

  • Receiver port: Port 3

Topo point

  • Auto point step size: 1

  • Quality control: QC1&QC2

  • Auto store point: Yes

  • Occupation time: 0m 5s

  • Number of measurements: 3

  • Horizontal precision: 0.015m

  • Vertical precision: 0.020m

On the base radio, if a Trimble TRIMTALK III

  • Channel: 3, 461.1000Mhz

  • Mode: Base w/No Rpt (unless you are using a repeater)

  • Transmit Power: depends on survey

  • Channel Sharing: Off

  • Wireless Mode: TM3 19200 bps

  • Port 1 Cfg: 38400-8-None-1

  • Device Status: Call Sign OFF

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Last modified: Monday, 12-May-2014 00:18:29 UTC