User manual TELEX AUDIOCOM IC-4M REV A

[. . . ] Separate volume controls are provided for headset and speaker. A three-position rocker switch is used for microphone on/off switching and for call light signaling. A momentary-type stage announce push-button switch allows the station operator to page or make public address announcements through an exernal PA system. [. . . ] The yellow power indicator light above the switch should illuminate. USING THE AUXILIARY INPUT 1. Plug the auxiliary program source into the Press and hold the CALL/MIC switch in the CALL position. The call indicator light for each selected channel should illuminate. Also, an inaudible 20 kHz signal is sent on each selected channel to activate the call indicator lights on any connected remote stations. AUX INPUT connector. 2. Assign the auxiliary program source to the desired channel(s) with the AUXILIARY CHANNEL SELECT rotary switch. 3. When a station responds verbally, release the call mic switch, and it will automatically return to the ON position for normal two-way communication. RECEIVING CALL SIGNALS 3. Adjust the AUXILIARY VOLUME control for a comfortable listening level at intercom stations on the selected channel(s). When a remote station calls the IC-4M, the appropriate call indicator light will illuminate. To respond, set the appropriate director CHANNEL SELECT switch to the "on" position, and then proceed with normal two-way communication. VOICE COMMUNICATION To communicate with remote intercom stations on one or more channels: 1. Set the desired front panel director CHANNEL SELECT push-button switch(es) to the "on" position. 2. USING THE INTERRUPT (IFB) FEATURE The INTERRUPT fold-back (IFB) switches are used primarily for momentary-type communications such as cueing on-the-air talent, or for providing brief responses to received call signals. During interrupt, the auxiliary program source is disconnected from all channels, and the director is connected to the interrupted channel. To use this feature: 1. Set the CALL/MIC switch to the ON position. (To listen only, set this switch to OFF. ) 3a. If using a headset, plug the headset into the DYNAMIC HEADSET connector, and adjust the HEADSET VOLUME control for a comfortable listening level. If using a condenser microphone together with an external speaker, plug the microphone into the CONDENSER connector, plug the speaker into the rear panel SPEAKER jack, and adjust the SPEAKER VOLUME control for a comfortable listening level. Set the CALL/MIC switch to ON. 2. Press and hold the desired channel IFB button while communicating. 3. Release the IFB button when finished to restore the auxiliary program and break the momentary communication link. OPERATION (CONT) USING THE STAGE ANNOUNCE FEATURE 1. Connect the rear panel STAGE ANNOUNCE output to the PA system. SIDETONE ADJUSTMENT Sidetone refers to that portion of the director's own voice signal which is heard in the director's headset. The amount of sidetone is adjustable for each channel through small openings i n the top cover (labeled SIDETONE A through SIDETONE D). Adjustment may be made using a small, flatblade screwdriver. 2. Press and hold the STAGE ANNOUNCE button while speaking into the microphone. SERVICE INFORMATION FACTORY SERVICE All Audiocom equipment returns must be sent prepaid. [. . . ] Copy of proof of purchase (keep your original). 4. Model and serial numbers (or date codes). 5. A complete description of the problem. CUSTOMER ASSISTANCE NON-WARRANTY RETURNS: 1. [. . . ]