Icom IC-R75 Instruction Manual - Page 14

3 INSTALLATION AND CONNECTIONS ■ FSK and AFSK (SSTV) connections To connect a terminal unit, TNC or scan converter, refer to the diagram below. q Connect a terminal unit as below. w S elect RTTY mode (or USB, CW modes for HF band data communications). e S et the receiver to the desired frequency as at right. r S et the connected terminal unit to the appropriate settings. • Refer to the terminal unit's instructions. The optional 250 Hz CW narrow filters may not pass RTTY signals. Be sure to select the appropriate IF filters corresponding to the signal width. (pgs. 18, 19) Frequency settings depend on the mode used. FM mode: [Setting frequency (displayed freq.)] = [Desired freq.] USB mode: [Setting frequency (displayed freq.)] = [Desired freq.] - [Center of Mark and Space freq.] CW narrow mode: [Setting frequency (displayed freq.)] = [Desired freq.] - [Center of Mark and Space freq.] + [600 Hz] LSB mode (for amateur RTTY): [Setting frequency (displayed freq.)] = [Desired freq.] + [Mark freq.] to [REC REMOTE] to [REC] AF IN 2-conductor 3.5(d) plugs TU or TNC PC SQUELCH IN ■ Connecting to a PC The RS-R75 remote control software is available to perform data setting and remote control of the receiver. Refer to the diagram below for connection. D System requirements To use this program, the following hardware and software are required: • IBM PC compatible computer • An RS-232C serial port • Microsoft® Windows® 95 or Microsoft® Windows® 98 • Intel i486DX4 processor or faster (Pentium® 100 MHz or faster recommended) • At least 16 MB RAM • At least 10 MB of hard disk space • At least 640 × 480 pixel, high color (16 bit) display Supplied RS-232C cable (OPC-743) PC IC-R75 10