Contemporary Research 232-FMA Product Manual

Stereo fm tuner
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Product Manual
232-FMA
Stereo FM Tuner
Rev 1.3 August 11, 2005
17630 Davenport Road, Suite 113 • Dallas, TX 75252
Phone: 972-931-2728 • Toll-Free: 888-972-2728 • Fax: 972-931-2765
E-Mail:
Sales@crwww.com
• Website: www.crwww.com

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Summary of Contents for Contemporary Research 232-FMA

  • Page 1 Product Manual 232-FMA Stereo FM Tuner Rev 1.3 August 11, 2005 17630 Davenport Road, Suite 113 • Dallas, TX 75252 Phone: 972-931-2728 • Toll-Free: 888-972-2728 • Fax: 972-931-2765 E-Mail: Sales@crwww.com • Website: www.crwww.com...
  • Page 2: Table Of Contents

    Single Tuner ... 11 Multiple Tuners, AV6x4 Router ... 11 Rack Mounting ... 12 RK1 Single Unit Rack Mount ... 12 RK2 Side-by-Side Rack Kit ... 12 Safety Instructions ... 13 Limited Warranty and Disclaimer ... 14 Contemporary Research 232-FMA FM Stereo Tuner...
  • Page 3: Overview

    Overview The Contemporary Research 232-FMA is a versatile RS-232 controlled FM tuner featuring stereo audio, 10-preset memory, front-panel operation and feedback, and intelligent control. Fully programmable, the unit can restore all settings on power-up from non-volatile memory. The front-panel buttons and LED display can be used for general operation and to program basic features for tuning, RS-232 baud rate and local control.
  • Page 4: Specifications

    3% maximum, <1% typical total harmonic distortion (THD) 24dB minimum, 28dB typical stereo channel separation 68dB typical signal to noise ratio 160mV RMS typical output level (or mute) Includes 12 VDC Power Supply (North America shipments only) Contemporary Research 232-FMA FM Stereo Tuner...
  • Page 5: Front Panel Programming

    1. Press and hold the Mute A/V button such that the red LED light above is lit (indicating Mute On). 2. Press Seek Up. 3. Release all buttons, the 232-FMA will now be in the front panel programming mode. 4. The front panel display is dedicated to programming information display while in this mode.
  • Page 6: Mode 9: Treble Setting Fixed At 0Db

    & seek up/dn mute A/V preset up/dn & Mute A/V seek up/dn & Mute A/V restore previous level full volume displays firmware version* mono local stereo local mono DX stereo DX 0 dB fixed 0 dB fixed 232-FMA FM Stereo Tuner...
  • Page 7: Rs-232 Control Protocol

    Each of the groups has one ASCII status response string containing all of the status data for that group. The current status string of a group is sent from the 232-FMA whenever a valid command for that group is received by the 232-FMA RS-232 port or front panel. A group's status may be requested (without making a change) via the RS-232 port.
  • Page 8: General Rs-232 Commands

    Preset frequencies act similar to a video tuner Tune Ring, after the last preset is selected (Preset 9), the next Preset Up command will start at the lowest Preset (0). While the 232-FMA has only audio outputs at present, we have kept the Mute A/V commands to be consistent with programming and operation for the 232-STA and 232-MTA TV Tuners.
  • Page 9: Terminal Communication Commands

    You don’t have to use the ‘=’ character between the command and parameter – the string works either way. Contemporary Research >EN’ Characters received will be re-transmitted. ASCII back-to-back for a full status update is allowed. 232-STA response strings back-to-back. characters long. 232-FMA FM Stereo Tuner...
  • Page 10: Response Strings

    Response Strings Typical: [Attention] [Unit#] [data ...data] [cr] [lf] 232-FMA status response strings contain ASCII characters similar to those used for the same functions in command strings. An ASCII 'carriage return' and ‘line feed' follow each response string. Frequency/Source Status Response String...
  • Page 11: Control Cable Connections

    RXD 2 GND 5 TXD 3 RXD 2 9-pin D-sub female Unit 2 9-pin D-sub female Unit 1 9-pin D-sub female Unit 3 9-pin D-sub female Unit 2 9-pin D-sub female Unit 1 9-pin D-sub female 232-FMA FM Stereo Tuner...
  • Page 12: Rack Mounting

    1. 4. Attach short rack ears to the side and towards the front of each unit with the four (4) supplied 8-32 by 1/4" (black) countersunk screws. Contemporary Research RK2 Rack Mount 232-FMA FM Stereo Tuner...
  • Page 13: Safety Instructions

    • If the video product is dropped or the cabinet is damaged. • When the video product exhibits a distinct change in performance, this indicates a need for service. Contemporary Research 232-FMA FM Stereo Tuner...
  • Page 14: Limited Warranty And Disclaimer

    Limited Warranty and Disclaimer Contemporary Research Corporation (CR) warrants this product to be free from defects in material and workmanship under normal use for a period of two years from the date of purchase from CR. Should such a defect occur CR will repair or replace, at their option, the defective product at no cost for parts or labor.

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