Product Manual

COM: used to select the COM port for communication between

SatViewer and your Nomad GPS receiver. This field is also available on

the GPS page for convenience and changing it in one location will

automatically change it in the other location.

Baud: sets the speed for communications between your Nomad GPS

receiver and SatViewer. The baud rate of your Nomad GPS receiver is

9600 by default. Please note, if you have used another application to

change the baud rate of your Nomad GPS receiver to 4800, it will take

longer for your Nomad GPS receiver to respond to changes made within

SatViewer. During this period, you may see menu items grayed out

while SatViewer is sending the new settings to your Nomad GPS

receiver.

Data Bits: should match the data bit rate set in the device you are

communicating with.

Flow: should match the flow control set in the device you are

communicating with.

Parity: should match the parity set in the device you are communicating

with.

Stop bit: should match the stop bit set in the device you are

communicating with.

NMEA Msg: This section allows you to control which NMEA messages

are output by your Nomad GPS receiver and the rate at which they are

output. The GGA NMEA message is automatically enabled by default

and cannot be disabled. You may change the frequency of output for the

GGA NMEA message, but you may not disable it. Other NMEA

messages listed may be disabled as well as changing the frequency of

output. The ability to change the frequency of output and to disable

certain messages is useful when communicating at a very low baud rate to

prioritize which NMEA messages are sent. Each field allows you to select

a value from one to five (measured in seconds), or to select OFF. For

example, selecting three instructs the receiver to output the corresponding

NMEA message once every three seconds. Selecting OFF instructs the

receiver to never output the corresponding message. This setting is only

applicable when you need to specify your Nomad GPS receiver to send

out very specific NMEA messages at specific times for your GPS

application. Most users will not need to change this as the default NMEA

settings will work for most GPS applications trying to display common

GPS information (e.g. position, velocity, direction).