CS-222

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. 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