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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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Table of Contents Overview............................................................................................................................................. 3 Specifications...................................................................................................................................... 4 Physical.................................................................................................................................................4 Front Panel...
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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. Full setup, control, and feedback is provided by RS-2
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Specifications Physical Size: 8.5" [216mm] wide x 1.75" [38mm] height (1RU) x 6.0" [153mm] deep Weight: 1.25 lbs [0.57kg] Enclosure: All aluminum with durable black powder coat paint Mounting: Rack mounting for one or two units side-by-side optional (RK1, RK2) Front Panel Push Buttons: Preset up and down, Seek up and down, and Mute All A/V Indicators: Red LED: Mute All A/V status 3 digit, 7 segment red LED display for frequency and stereo/mono mode Rear Pan
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Front Panel Programming To Enter a Front Panel Programming Mode: 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. 5. Changes are saved in non-volatile memory as they are entered. 6. The Seek up/down buttons scroll through programming modes
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Mode 9: Treble setting fixed at 0dB Front Panel Programming Quick Reference Mode: Parameter: FM Tune 0 .0 FM odd frequencies (US standard) 1 FM even and odd frequencies (international) Baud Rate 1 .1 300 2 600 3 1200 4 2400 5 4800 6 9600 Unit Number 2 .1 one 2 two 3 three Not Used 3 .0 Panel Lockout 4 .0 none 1 preset up/dn 2 seek up/dn 3 preset & seek up/dn 4 mute A/V 5 preset up/dn & Mute A/V 6 seek up/dn & Mute A/V
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RS-232 Control Protocol Overview The 232-FMA full duplex RS-232 scheme enables a system programmer to control all FM Tuner functions as well as monitor 3 groups of FM Tuner status. All commands are sent as ASCII strings. No delays between characters or commands are required, as data is interrupt driven and buffered. The 3 status groups are: Frequency/Source Seek, Audio Levels/Mode and Front Panel. The Mute A/V button- function status from the 232-FMA front panel has been grouped wi
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General RS-232 Commands TT= Select tuned frequency 87.7-108.0 Example: ‘>TT=94.5 Selects preset 94.5, if currently stored as a Preset TC= Force tuned frequency 87.7-108.0 Example: ‘>TC=101.9’ Selects preset 101.9 regardless of current Presets TP Set to previous preset Accesses previously selected frequency TU Tune channel up Selects next higher channel in stored Tune Ring Example: ‘>3TU’ Bumps Unit#3 to next higher preset TD Tune preset down Selects next lower preset. T+ Tune f
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Terminal Communication Commands EF Echo Off Characters received will not be re-transmitted (power up default) EN Echo On Characters received will be re-transmitted. Example: ‘>EN’ Characters received will be re-transmitted. ID Product ID Returns the product model number and software version. Z! Zap Reconfigures unit for all factory default settings. RS-232 Command Hints and Tips Leading zeros may be included or omitted from command parameters. Example: ‘>TC=089.5’ Selects preset
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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 Audio Status Response String Front Panel Mode Status Response String Contemporary Research 10 232-FMA FM Stereo Tuner
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Control Cable Connections All drawings show pin numbers relative to a PC COM port or Axcent3 DB-9 RS-232 control port. Pin-outs to other types of control ports may vary. Pins 4 and 9 are momentary closures to GND (5). Single Tuner Control Wiring – Single Unit 5 GND GND 5 2 RXD TXD 3 RS-232 9-pin D-sub 3 TXD RXD 2 Control Port female Preset Up 4 Preset Down 9 Multiple Tuners, AV6x4 Router Up to three tuners can be daisy-chained from one RS-232 control port. Rememb
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Rack Mounting Two options are available for rack-mounting tuners. RK1 Rack Mount RK2 Rack Mount RK1 Single Unit Rack Mount Size Long Bracket: 9.5" [206mm] wide x 1.75" [38mm] height (1RU) x 1.75” [38mm] deep Size Short Bracket: 1.0" [22mm] wide x 1.75" [38mm] height (1RU) x 1.75” [38mm] deep Weight: 3.25 oz [0.148kg] Enclosure: All aluminum with durable black powder coat paint Hardware: Qty 4 CS, Phillip, Flathead, 82deg, Black, 8-32 x .25” Attach the long and shor
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Safety Instructions Read before operating equipment 1. Cleaning - Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. 2. Power Sources - Use supplied or equivalent UL/CSA approved low voltage DC plug-in transformer. 3. Outdoor Antenna Grounding - If you connect an outside antenna or cable system to the product, be sure the antenna or cable system is grounded so as to provide some protection against
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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. This warranty extends to product purchased directly from CR or an Authorized CR Dealer. Consumers should inquire from selling dealer as to
