300 BPS DCM-6 Modem (260-1393) Features Faxback Doc. # 5697 By adding the Direct-Connect Modem DCM-6 to your computer system, you can access national and international information networks and data bases, or you can exchange information with another computer user over the phone lines. MODEM is an acronym that stands for Modulator/Demodulator. A modem transforms a typical two-level (binary) computer signal into a form suitable for transmission over the telephone network. With the frequency sequence of tone signals, allowing you to originate and answer calls and communicate. You can use you Modem to send or receive programs and to contact information services. Data transmission of the DCM-6 is at 300 bits per second (bps). Your Modem can be used with any Tandy computer or data terminal that has RS-232C interface capabilities. With optional acoustic cups (26-3805), you can use your Modem virtually anywhere that AC power is available--no need to connect semi-permanently to the phone line. The DCM-6 is a self-contained, Frequency Shift Keying (FSK) telephone interface. This FSK method of frequency modulation for transmitting digital signals is the same as that method used in low-speed modems. When the DCM-6 is connected to your telephone wall jack, your phone can only be used for conversation when the CONNECT switch is off. Be sure this switch is set to OFF when you are not using the Modem. Mode Switch--Selects either ORIGINATE or ANSWER mode. Carrier Detect Indicator--Lights when a carrier tone is detected. A carrier tone is the sound you hear when you pick up the receiver while the Modem is communicating with another modem. Connect Switch--Connects the Modem to the telephone line. Push this switch to turn power on. Power On Indicator--Lights when the Modem's power is on and connected to the telephone line. RS-232C Connector--Standard DB-25 jack for connection to the RS-232C interface of most computers. Acoustic Coupler Jack--Accepts the DIN connector of the acoustic cups (26-3805). When connected the phone jack is disabled. Power Jack--Connects the Modem to the AC adapter. Phone Jack--Connects the telephone's modular plug to this connector. Modem To Telephone Line Connector--Insert the Modem's modular plug (RJ11) into the telephone wall jack. (dtc/BKL-01/25/96)