Quit the active survey and go back to the main menu (SHIFT-F6) and then do the following steps:

* Hit the CONFIG key and select option 4 Interfaces.

* Highlight your Pacific Crest interface and press the CTRL key (F5).

* Enter the desired channel number and hit the CONT (F1) key.

* Hit the CONT (F1) key again to return to the main menu.

* Restart your survey.

Note: This must also be done at the base. However with the new PDL base radios the channel change can be done manually at the radio.

The following steps assume that the geoid model has been copied to your computer and added to SKI-Pro. (See SKI-Pro General FAQ #3).

* The first thing you need to do is create a geoid model field file. Do this in SKI-Pro by selecting Tools | Create Geoid Model Field File. Keep the size of the file around 200,000 bytes or less.

* Next put this file (.gem) on the PC card in the DATA\GPS\GEOID directory.

* In the receiver main menu, select 7 Transfer | 08 Geoid Field File and transfer the file from the PC card to the sensor.

* In the receiver main menu, select 1 Survey and press the <F6> CSYS key.

* Highlight your coordinate system and press <F3> EDIT.

* Move the highlight to the Geoid Model: line and press the <ENTER> key.

* Highlight the geoid field file that fits the project area, and press the <ENTER> key again.

* Press <F1> CONT to return to the Coordinate Systems screen.

* Press <F1> CONT again to return to the Begin Survey screen with your coordinate system active.

The sensor RAM is full. Do the following to clean it up:

* Transfer any information stored in the RAM that you want to save to the PC card. This includes configurations, coordinate systems, code lists, geoid field files, and any special antennas you have created.

* Select 4 Utilities from the main menu.

* Select 2 Format Memory Module.

* Don't press the CONT (F1)

* Press the SYSTM (F5) key to format the RAM and shut down the system.

You need to completely reinstall the geoid field file. Make sure you have a copy of the geoid field file on the PC card and then do the following steps:

* From the main menu, select Applications...\Determine Coord System.

* Press the CSYS (F6) key.

* Highlight the Coordinate System you are using, and press the EDIT (F3) key.

* Move the cursor down to Geoid Model: field and press the ENTER key.

* Highlight the geoid model field file you want to use and press the DEL (F4) key.

* Press the OK (F5) key in response to the message.

* Escape back to the main menu.

* In the Transfer routine, re-transfer the geoid field file from the PC card to the Sensor.

* Go back into the coordinate system and select the geoid field file in the Geoid Model: field.

* You can now remove the geoid field file from the PC card.

Note: If you press the ENTER key in the Geoid Model: field, highlight the geoid field file, and press the EDIT (F3) key, you should see the path C:\GPS500\SYSTEM\GEOID\geoidfilename.gem.

This happens because the residuals were not distributed. The default is "no distribution". When saving the transformation, change the distribution to By 1/Dist as shown in the screen below, and your control point values won't change. (See also Datum & Map FAQ #4.)

The radio is receiving signal, but the receiver does not know how to translate it. It's expecting to receive English and is getting Spanish. This is almost always a baud rate issue. There are two baud rates that we need to be concerned with. The serial communication rate, i.e. the rate at which the receiver and the radio communicate, and the radio link rate, i.e. the rate at which the two radios communicate with each other.

When you select the device as Pacific Crest RFM96 in your configuration, you are selecting a default serial communications rate of 9600 baud. If you select the device as Pacific Crest PDL, you are selecting a serial communication rate of 38400 baud. The serial communication rate in the radio should be set accordingly. If this serial communication rate does not agree with rate that is set in the radio, the receiver and radio will not communicate correctly.

Also, if the radio link is not set the same in both radios, you may receive signal, but the information will be unintelligible. You will need to use the Pacific Crest configuration software that came with your radios to change the radio baud rates. Make sure that both the Base and the Rover radio have the same radio link settings. For RFM 96 radios, the settings should be 9600 baud and GMSK modulation. For the PDL radios the settings may be 19200 baud and 4FSK modulation, or they may be set to RFM 96 values of 9600 baud and GMSK. If you are going to mix RFM 96 radios and PDL radios, they should all be programmed to 9600 baud and GMSK modulation. In any case, the radio link settings should be same in all radios.

Follow the steps in section 11.2 of the Technical Reference Manual (page 283 of version 4.0.0en).

See FAQ #1 in the SKI-Pro General section below for instructions on how to make this document easily accessible.

Follow the steps given below:

1.      Select "3 Applications" from the main menu.

2.      Select "02 Point Management" from the applications menu.

3.      You should only see the BASE point received over the radio from the base receiver in the list of points.

4.      Press the <F2> NEW key.

5.      Enter the name of the base point. In this case it would be BASE.

6.      Enter the Local N, Local E, and ortho height of the base point. (Use coordinates that won't go negative, and a real or scaled elevation).

7.      Press <F1> STORE to save the point.

8.      You now have two positions for BASE.

9.      Press the <ESC> key back to the applications menu.

10.     Select "01 Determine Coord System" from the applications menu.

11.     Enter the name for your coordinate system. I suggest using the same name as the project.

12.     Put the current job name in for both WGS84 Pts and Local Pts.

13.     Press <F1> CONT.

14.     Transform will normally have the same name as Coord Sys and Trans Type should be 1-Step.

15.     Press <F1> CONT.

16.     BASE should appear in both WGS84 and Local columns, and Match should be P+H.

17.     Press <F1> CONT.

18.     You will have no residuals. Press <F3> RESLT.

19.     Press <F3> EDIT.

20.     Change the Apply Elev field to YES.

21.     Press <F1> CONT.

22.     Press <F1> CONT.

23.     Press <F1> CONT.

24.     Press <F1> CONT.

25.     You should be back in the main menu. Your occupied positions will now display in local coordinates based on the coordinates you entered for the BASE point. The distances have been scaled from the base position to reflect the height above the ellipsoid. Inversing between these local coordinates will provide ground distances.