M7000

THE WARD-BECK SYSTEMS 7000 Series solid-state Intercom Systems are designed to provide inter- communication between production and technical staff within a broadcast or production complex: Modular construction enhances the flexibility of the available configurations 1 ) M7012 12 input, 12 output configuration with to 144 crosspoints (expansion capability to 12 x 16 with 1 to 192 crosspoints) Requires 8 rack units of space: 2) M7024 24 input, 24 output configuration with to 576 crosspoints.

Requires 14 rack units of space_ Various capacity systems are conveniently assembled by re-arranging the modular components The 7000 series Intercom Systems comprise centrally located amplifier and switching equipment which is remotely controlled from passive control stations situated in the appropriate personnel areas. The concept features entirely balanced circuitry for improved crosstalk and minimum transient and RF degradation: The system utilizes latest state-of-the-art operational amplifier techniques with solid-state balanced crosspoints and integrated circuit amplifier designs.

Optimum efficiency in packaging is achieved by use of one MF7 frame type which accommodates the basic amplifier and crosspoint modules. 12 M703 inputloutput amplifier modules or 24 M712 cross- point modules may be accommodated in the 5-1/4 in. high (3 rack units) , standard 19 in. rack mounting MF7 equipment frame. The sophistication of the system may be expanded as required through the use of WBS 600 series power amplifiers and distribution amplifiers for higher listening levels and multiple output distribution.

The inherent flexibility of the 7000 series system permits convenient integration of the facility with any existing system: In addition, the basic modules will accommodate dynamic or carbon micro- phone inputs from various sources or any make of camera equipment

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PREAMPLIFIER SECTION (M7O1) GAIN: 80dB (Max.) + 2dB FREQUENCY RESPONSE: + IdB 100 Hz to 1OkHz NOISE: Equivalent to 122dBm relative input noise TOTAL HAR- MONIC DISTOR- Less than 1% measured at +18dBm TION: output INPUT: 60dBm, 150 ohms balanced (conditional strapping determines dynamic or carbon source) OUTPUT: 8dBm, 600 ohms balanced (+18dBm Max:) COMPRESSION: 25dB range (may be switched out) POWER +24 to 36 volts dc unregulated.

REQUI REMENTS: 35mA approx M712 1 x 12 Crosspoint mother board GAIN: Unity (+6dB pre-set control incor- porated FREQUENCY RESPONSE: + 0.5dB 50Hz to 10kHz NOISE: S/N better than 7OdB measured from +8dBm TOTAL HAR- MONIC DISTOR- Less than 0.5% measured at TION: +18dBm INPUT: +8dBm nominal (+18dBm Max:) balanced from direct line or from M703 preamplifier INPUT IMPEDANCE: 30k ohm balanced bridging OUTPUT: OdBm to +8dBm nominal (+18dBm Max: ) CROSSPOINT ISOLATION/CUT OFF: 1OOdB TURN ON/OFF TRANSIENT: Inaudible POWER REQUI REMENTS: 24 volts dc regulated 15mA POWER AMPLIFIER SECTION (M702) GAIN: 35dB (Max:) + 2dB FREQUENCY RESPONSE: + IdB 100 Hz to 8kHz NOISE: S/N better than 75dB measured from 3W output TOTAL HAR- MONIC DISTOR- Less than 15% measured at 3W TION: INPUT: OdBm to 18dBm, 600 ohms balanced from crosspoint matrix OUTPUT: 3 Watts directly into 8 ohms (not balanced) COMPRESSION: POWER +24 to 36 volts dc unregulated, 25mA REQUI REMENTS: (quiescent), 30OmA (at Max_ output)

WBS 7000 SERIES INTERCOM SYSTEMS : GAIN : Microphone to speaker: 8 5dB (-60dBm in 3W out) Microphone to line: 68aB (-6 0dBm in +8dBm out) FREQUENCY RESPONSE : #2B 10OHz to 8kHz (Bandwidth Controlled) NOISE : Microphone: equivalent noise -120dBm Line: 7 0dBm S/N below +l8dBm output TOTAL HARMONIC DISTORTION : Less than 1.58 1WHz to 8kHz Microphone input (-50dBm) to speaker output (3W 8 ohms load) INPUT LEVELS : Microphone: (Dynamic) -6 OdBm to -3OdBm 150 ohms balanced (Carbon) -30dBm to OdBm , balanced or unbalanced Compressor reduces input dynamic range by 3/1 , compression range 25dB _ Line: +8dBm 600 ohms balanced QUTPUT LEVELS : Line: +8dBm into 600 ohms balanced Speaker: 3W maximum into 8 ohms DIMENSIONS : M7006 5 rack units (8 .

75 ins . ) M7012 8 rack units (14 ins . ) M7024 14 rack units (24 .50 ins . ) POWERCONSUMPTION : M7006 100 VA M7012 200 VA M7024 400 VA AMBIENT TEMPERATURE oa to 50oc