Operating Instructions and Installation Instructions

ComNav Vector G2 & G2B Installation & Operation Appendices

Document PN 29010078 V2.0 - 80 -

DRAFT #3 – 29 May 2009

Sending Commands to the G2

Another problem when using HyperTerminal with a G2 is that it’s hard to simply “type”

commands to the G2.

That’s because HyperTerminal is a “dumb terminal” program – it depends on the device it is

“talking to” (the G2, in this case) for “editing user input” … hit a key on the keyboard, and that

character immediately gets sent out to the G2.

But the G2 is does not have an “input editor” function (i.e., the Backspace & Delete keys

mean nothing to it), so you can not correct any wrong characters which you happen to type.

Nor does the G2 echo any characters it receives back out to the PC … so you can’t even see

what you’re typing

! And it’s even worse, if you are trying to type commands while the G2 is

sending a continuous stream of data …

The solution to this is to use “script” files – simple text files, containing the command(s) that

you want to send to the G2, which you can create with any text editor (e.g., Notepad,

WordPad, Word

, etc. on a PC).

Figure 33 – Sending a Command File

Figure 34 – Choosing the Command File to Send

… unless you set HyperTerminal to echo the keys you type onto the PC display (which can cause other problems).

With MS Word®, be sure to save your script files as “simple text”; Word 2003 calls these “plain text (*.txt)” in the Save

As dialog, older versions of Word called them “MS-DOS text (*.txt)” or something similar. Word’s normal default file

format is “Word document (*.doc)”, which will not work properly in HyperTerminal with a G2.