300 BPS DCM-6 Modem (260-1393) Programming Information  Faxback Doc. # 5699

Before you begin using your Modem, find out the communications conventions 
of the computer or modem with which you are going to communicate. 
Specifically, you will need to know:

* Baud rate (not to exceed 300)
* Word length
* Parity (odd, even, none)
* Number of stop bits
* Who will use originate mode, who will use answer mode

Communications parameters must be set to match those of the computer on the
other end before communications can take place. Set up your computer
accordingly. If you need assistance in setting the communications protocol
(baud rate, word length, parity, and stop bits) of your computer, refer to
your computer owner's manual.

To Operate in Originate Mode:

1. Set the MODE switch to the ORIGINATE position.

2. With the CONNECT switch off, pick up the handset of your telephone and 
   dial the number of the "host" computer.

3. When you hear the high-pitched carrier tone, press the CONNECT switch to
   the ON position, and gently hang up the phone. Or, if using acoustic 
   cups, place the phone in the cups.

4. When the Carrier Detect (CD) lights up, you can start communicating. When
   communications are finished, be sure to sign off. the sign-off will 
   depend on the "host" computer; however, BYE or GOODBYE is commonly used.

5. After signing off, press the CONNECT switch to the OFF position. If you 
   are using the acoustic cups, detach the cups and hang up the handset.

To Operate in Answer Mode:

1. Set the MODE switch to the ANSWER position.

2. Wait for the remote computer operator to call you.

3. Upon receiving the call, pick up the handset. When you hear the carrier
   tone, press the CONNECT switch to the ON position. Hang up the phone or 
   if using acoustic cups, detach the cups and hang up the handset.

Using with Videotex Software:

A modem that is connected to a Tandy computer running a Videotex software
package constitutes on of the most common ways to use you Modem. This sect-
ion describes how to use the DCM-6 with VIDTEX (the Videotex program) on 
most Tandy computers:

1. Connect the system as described in Appendix A. Be sure the MODE switch 
   is set to ORIGINATE.

2. Load and run your version of VIDTEX.

3. Dial the information service's telephone number and listen for the
   high-pitched carrier tone. Press the CONNECT switch to ON. When the tone
   changes, hang up the phone. Or, if using the acoustic cups, place the 
   phone in the cups.

4. When the CD indicator lights, you are ready for communications.

5. Complete the logon sequence for your information service by following the
   procedure described in your Videotex package and information service 
   user's guide.

(dtc-08/04/93)