Two-Channel Main Station CS-222 CS-222 Front Panel F E AT U R E S • Portable, heavy-duty enclosure with carry handle • Supports up to 30 beltpacks or 10 speaker stations on 2 channels • Automatic short-circuit protection and reset with LED indicators • Dual-action electronic momentary/latching “Talk” buttons • Mic- or line-level program with selectable “Program Interrupt” • “Remote Mic Kill” • Stage announce with relay • Individual volume controls for each channel • Front-panel headphone connector • Channel A & B “Link” switch to operate as a one-channel system • Front-panel speaker output • U.L. approved DESCRIPTION The CS-222 is a portable main station with carrying handle, power supply, and a versatile intercom monitoring system. It supports two channels of intercom with up to 30 headset stations or 10 speaker stations. It features Clear-Com’s excellent speech intelligibility in both high and low noise environments. M O N I TO R I N G S YS T E M The station can monitor intercom activity on one or both channels with individual Listen Level controls. Monitoring intercom activity is possible through a headset, or external earphone or speaker. The 4-watt output amplifier can drive a standard Clear-Com headset to levels greater than 110 dB SPL – more than enough volume for the noisiest environment. CS-222 Back Panel TA L K S E L E C T I O N The station contains a mic preamp with limiter and proprietary speech-shaping circuits for enhanced intelligibility. An individual electronic momentary/ latching talk button is provided for each channel. These buttons light dimly when latched. The channels may be accessed separately simultaneously without being tied together. To combine both channels in a single party line, a “Link” switch is provided on the front panel. S TA G E A N N O U N C E For paging applications, the station provides a balanced, line-level output signal to a connector on the rear panel. The front panel Stage Announce button activates the output and the Stage Announce relay. SIGNALING Visual “call” signaling attracts the attention of operators who have removed their headsets or turned off their speakers. The station provides individual Call buttons for each channel to signal all stations on the channel(s). When a remote station operator sends a Call signal, the CS-222’s associated Talk button lights brightly. The Visual Signal circuit is also used to activate the optional remote page feature at other stations. CS-222 Two-Channel Main Station S P E C I F I C AT I O N S MICROPHONE PRE-AMP (Dynamic Headset Input) Impedance: 1 kΩ Level: -55 dBv* nominal, -10 dBv max. Frequency Response: 250 Hz - 12 kHz, contoured for intelligibility Limiter Range: 20 dB Gain from Headset to Intercom Line: +41 dB HEADPHONE AMPLIFIER Load Impedance: 50 - 2,000 Ω Output Level: > +20 dBv across 600 Ω Distortion: < 0.2% THD @ 1 kHz Frequency Response: 200 Hz - 18 kHz, +- 2 dB INTERCOM LINE DRIVE/RECEIVE CIRCUITS Impedance, Output Load: > 10 kΩ, 200 Hz - 10 kHz Level, Line: 200 Ω load Nominal: -9 dBv Maximum: +5 dBv before clip Sidetone Null Capability: >25 dB, 200 Hz - 10 kHz Crosstalk, Station-Induced Channel-to Channel: >60 dB Noise, S/N Ratio in Listen Channels: >60 dB SYSTEM SPECIFICATIONS Intercom Line Length: 5,000 ft. maximum Intercom Line Length for Crosstalk <-52 dB: 500 ft. maximum Maximum No. of Stations Per Intercom Line: 100 Frequency Response: 150 Hz - 18 kHz, +- 2 dB POWER SUPPLY Output Power: +30 volts DC, +- 1 V Output Current: 1 Amp Reset Current: 1 Amp Hum & Noise: < -1 mV AC RMS Station Capacity: 30 headset stations or 10 speaker stations REAR-PANEL CONNECTORS Intercom: (6) XLR-3M (3 per channel) Program: (1) XLR-3F Stage Announce: (1) XLR-3M Announce Out: SPST terminal block REAR-PANEL SWITCHES Power On/Off: 1 Termination On/Off: 2 Mic/Line Select For Program Input: 1 AC POWER REQUIREMENTS 105 - 125/210 - 250 Volts, 50 - 60 Hz, 60 VA DIMENSIONS 3" H x 8.125" W x 10" D (76 x 206 x 254 mm) WEIGHT 5.2 lbs (2.3 kg) R E M OT E M I C K I L L ( R M K ) Pressing the RMK button will turn off the microphone talk circuits of all ClearCom beltpacks eliminating annoying noise from the open headset microphones. S I D E TO N E Sidetone control allows the operator to vary the level of his or her own voice as heard in the headset. The CS-222 provides individual sidetone adjustment for each channel. P RO G R A M I N P U T The station accepts a balanced, mic- or line-level program signal for monitoring in the headset and/or mixing the intercom audio on either or both channels. The front panel provides a local Program Monitor volume control and individual Program Send level controls. It also provides a Program Send on/off/interrupt switch for each channel. When interrupt is selected, program is interrupted when the Talk button is pressed. P OW E R S U P P LY A N D S U P P LY S YS T E M P ROT E C T I O N The CS-222 provides visual indication of power supply conditions. In the event of a DC short circuit or current overload, the station’s electronic overload protection circuit will shut down the DC output to avoid damage. As soon as the fault condition is removed, the auto-reset circuitry will automatically restore system power – even under full load conditions. There is no need to disconnect stations to allow the power supply to reset. To increase system capacity, one or more power supplies can be connected in parallel with the CS-222. In such configurations, the main station’s “intelligent” power-sensing capability lets the system automatically reset all power supplies after a DC short or AC power loss in the system, no matter how large the system is. S I M P L E S E T- U P The CS-222 connects to remote stations with standard, two-conductor shielded mic cable. With the optional rackmount kit, the main station can mount in a standard 19" equipment rack, requiring only two rack spaces. The CS-222 conforms to the highest standards of reliability and performance, providing trouble-free service over a wide-range of environmental conditions. CS-222 BLOCK DIAGRAM BALANCED PROGRAM INPUT 2 * 0 dBv is referenced to 0.775 volts RMS INTERCOM LINE OUTPUTS PROGRAM MONITOR INPUT PAD 3 LIMITER CHANNEL A LEVEL PGM MIC INPUT 1/2 HEADSET CONNECTOR STAGE ANNOUNCE ANNOUNCE OUT CALL SENSE CALL SEND CURRENT SOURCE ON 1 LISTEN 3 SIDETONE HEADSET EARPHONE OUTPUT 2 LEVEL PGM TALK A B PROGRAM ON/OFF INTERRUPT A B CALL SENSE LOGIC A B CALL/ TALK LIGHTS A B TALK CHANNEL B CONTROL LOGIC SIDETONE LISTEN CURRENT SOURCE CALL SENSE CALL SEND TO CMOS SWITCHES ANNOUNCE RELAY = ANALOG CMOS SWITCH Clear-Com Intercom Systems: 4065 Hollis Street, Emeryville, CA 94608-3505 (510) 496-6666, Fax (510) 496-6699, www.clearcom.com International Sales: PO Box 302, Walnut Creek, CA 94597, (925) 932-8134, Fax (925) 932-2171 © 1999 Clear-Com Intercom Systems. PL-Pro is a Registered Trademark of Clear-Com. #CS222/899 1 2 3 ANNC TERM OFF TALK N.C. C. N.O. All specifications are subject to change without notice. MIC LINE LEVEL SELECT 1 ON TERM OFF EARPHONE A+B LINK 1 2 3 RED SHORT POWER ENTRY MODULE WITH PWR ON/OFF SW A+B GREEN OK REGULATED POWER SUPPLY 32V CH A CH B REMOTE MIC KILL