Timewave DSP-232, Operating Manual

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Chapter 6 GPS Applications
6. Now type Beacon E 60 , then press ENTER. This will cause your DSP-232 to transmit its beacon text every
five minutes. APRS must see the beacon text containing the position information and a weather symbol
character before it will display your weather information.
7. Now you need to program the GNMEA1 sentence to match the output of the ULTIMETER II. type
GNMEA1 # , then press ENTER. This will cause the DSP-232 to begin parsing the ULTIMETER II data
starting with the # digit.
Note: some ULTIMETER II start their string a # digit and some start their strings with a * digit. This value
may have to be changed to a * if it does not work upon installation.
8. Type TBAUD 2400 , then press ENTER. This sets the DSP-232 serial baud rate to match the output of the
ULTIMETER II.
9. Now type RESTART , then press enter. This will cause the terminal baud rate to change to 2400 baud
matching the ULTIMETER II. Change your terminal baud rate to 2400 baud to match that of the DSP-232.
10. Now type GPSMode 2 , then press ENTER. Now press ENTER again to enter the stand-alone weather
station mode. Now disconnect the serial cable and connect the ULTIMETER II, and you are ready to transmit
weather information in an APRS system.
GPS-Specific Commands
GENDchar n Default: $0D (CTRL-M)
Mode: GPS packet
The default GENDchar of $0D requires the string to end with a CR, LF to conform with the NMEA format. If this is
changed, the sentance will end with whatever character is programmed. This command does not need to be
programmed for use with GPS or Loran devices. It is intended for use with other formats.
GINIText text Default: None
Mode: GPS packet
text
- Any combination of characters up to a maximum length of 60 characters.
This text will be sent to the serial port when the DSP is powered up with GPSMode NOT equal to zero. This text is
intended for an initialization string for OEM GPS cards requiring setup after power-down. If not programmed, the
DSP will send nothing at power-up.
GLOCtx n Default: 0 (00 seconds)
Mode: GPS packet
GLOCtx is used to periodically transmit GPS data received on the serial port. GLOCtx is programmable from 0
(never) to 2500 seconds in 10 second intervals. A transmission will occur if, GPSMode = 1 or 2, GLOCtx is not
zero, and the correct NMEA information is received on the serial port.
GNMEA1 text Default: GPGLL (0-8 characters)
Mode: GPS packet
This is the string the DSP will parse from the NMEA device. The text can be any ASCII character.
GNMEA2 text Default: None (0-8 characters)
Mode: GPS packet
This is another string the DSP will parse from the NMEA device. The text can be any ASCII character.
6-8 September, 05