Worth Data RF Terminal 7000 - Manual (Page 34)

information by echoing back the data to the Terminal that sent it, along with a beep. If the data transmission
did not make it through to the Base station after 10 tries, the RF Terminal will give two long beeps and display
the following message:
TRANSMISSION FAILED
TO RETRY, MOVE CLOSER
AND PRESS ENTER.
F1 TO EXIT.
One-Way mode also works well as a test program since it doesn’t require a program running on the host
computer or even that the Base Station be connected to the host. To get into One-Way Mode:
Hit any key at the opening screen, then select option 3 from the MODE MENU.
If the Base Station already has other RF Terminals signed on in Two-Way mode, you will not be allowed
into the system. A Base Station must be dedicated to one mode at a time.
If the Base Station is dedicated to One-Way mode, you will see the following prompt on the RF Terminal
display:
Data Received Was
Enter Data?
Since you have just started your One-Way session, there is no data to display on line #2. Line #3 is now
asking you to scan or key data into the RF Terminal. If you are entering data from the RF Terminal keypad,
you must press the ENTER key to transmit your data. If the Base Station receives the data, the RF Terminal
displays the following prompt:
Data Received Was
aaaaaaaaaaaaaaaaaa
Enter Data?
Where aaaaaaaaaaaaaaaaaa is the data received by the Base Station (and transmitted to the Host
Computer if connected). You can exit One-Way Mode simply by pressing the F1 key on the RF Terminal
keypad.
In One-Way Mode, the RF Terminal transmits its Terminal ID to the Base Station but it does not pass it on
to the Host Computer. If your application on the Host Computer needs to know which RF Terminal data
came from, use the Preamble setup parameter to enter unique identifying information. Data is also
transmitted without a Terminator Character (like a CR or TAB that is transmitted after the data); so if you
need one, use the Postamble setup parameter to add the appropriate character(s) after your data. For more
information on Preambles and Postambles see Chapter 2; RF System Setup for details.
How Site Survey works
The RF Terminal uses Site Survey mode to: 1) test the radios at short range, (50 ft.) as an acid test for
correct operation, and 2) to evaluate a specific site for effective coverage. Because each operating
environment is different, it is almost impossible to predict the range without Site Survey.
Before you permanently install any hardware, you should perform a Site Survey to fully evaluate your
planned area of operation. During the test the RF Terminal is transmitting messages and waiting for
acknowledgment from the Base Station. (Since this US Terminal hops over 26 different frequencies, the Site
Survey goes across all frequencies to make comparisons valid; this takes about 10 seconds.). The Site
Survey mode displays the success rate of sending 100 packets to the Base. The higher the number, the more