Chicago Industrial Reuse and Parts Blog-Newsgroup > Each Chicago
> New
> Industrial
> Electrical
> Clear-com MS702 main intercom station 2 channel, power
Clear-com MS702 main intercom station 2 channel, power
Clear-Com MS702 Main Intercom Station 2 Channel, Power Supply
The MS-702 is a one-rack-space, two-channel main station with a regulated 1.2-amp "fail-safe" power supply, individual channel short-circuit protection, and a versatile intercom monitoring system. It supports two intercom channels with up to 40 beltpacks or 10 speaker stations. It features Clear-Com's excellent speech intelligibility in both high- and low-noise environments.
The MS-702 can monitor intercom activity on one or both channels with individual listen-level controls. Monitoring intercom activity is possible through a headset or the internal loudspeaker. The high-sensitivity internal speaker provides intelligible communication in the typical active production environment.
The MS-702 contains mic preamps with limiters, and speech-shaping circuits for enhanced intelligibility. An individual electronic momentary/latching talk button is provided for each channel. These buttons light dimly when latched - blue-color LED while in stand-by and amber-color LED when latched. The channels may be accessed separately or simultaneously without tying them together. An optional gooseneck mic is available.
For paging applications, the MS-702 provides a balanced, line-level output signal to a 1/4" TRS connector on the rear panel. The front panel "Announce" button activates the output and the Announce relay. The relay circuit, on a separate 1/4" TRS connector, is typically used to mute control-room monitors during live announcements.
Visual "call" signaling attracts the attention of operators who have removed their headsets or turned off their speakers. Call buttons for each channel signal all stations on that party line by flashing brightly. Along with the visual signal, the station's speaker will emit an audible signal if the remote station operator holds the Call button for more than 2 seconds.
The MS-702 is equipped with a global RMK button. It will turn off the microphone talk circuits of all Clear-Com beltpacks in the system, eliminating extraneous noise from the "open" headset microphones.
The MS-702 accepts a line-level external program input for monitoring in the headset and speaker, and/or mixing with intercom audio on either or both channels. When Interrupt is selected, the program signal is interrupted when the Talk button is pressed.
Power Supply & System Protection
The MS-702 provides visual indication of power supply conditions. In the event of a short circuit or current overload on a channel, that channel will shut down while the other one continues to operate. As soon as the fault condition is removed, the "auto-reset" circuitry will restore power to that channel - even under full load conditions.
The MS-702 connects to remote stations with standard, two-conductor shielded mic cable. User-selectable setup dip switches are provided on the rear panel.
* Supports up to 40 beltpacks or 10 speaker stations on two channels and 12 headsets
* Separate short-circuit protection for each channel
* Dual-action electronic momentary/latching "talk" buttons
* Program feed to both channels, with selectable "Program Interrupt" (IFB)
* "Call" signal buttons for each channel
* Announce output with relay
* Volume controls for each channel
* Visual and audible "Tone Alert" signaling
* Channels A & B "Link" switch
* External switchable line termination on each channel
* Universal voltage power supply for 100-240 VAC operation
Mic Limiter Threshold: 0dBu +/-3dB
Maximum Level before Clipping: >=20dBu
Output Impedance: <=25ohms
Output Limiter Threshold: +5dBu +/-3dB
Maximum Output Level before Distortion: >=17 dBu
Max Output Level before 1% Distortion: 20dBu +/-2dBu
Max level before Clipping:>=12dBu
Sidetone Null Capability: >25dB
Output Impedance:>=200 ohms
Load Impedance: >=600 ohms
Panel Mic - Party Line: 600-10kHz +/-3dB
HeadsetMic - Party Line: 200-12kHz +/-3dB
Headset Mic - Line Out: 200-12kHz+/-3dB
Program Input - Party Line: 100-17kHz +/-3dB
Program Input -Headset Out: 200-10kHz +/-3dB
Program Input - Speaker Out: 300-10kHz+/-3dB
Party Line - Headset Out: 200-10kHz +/-3dB
Party Line - Speaker Out: 300-10kHz +/-3dB
Panel Mic - Party Line: <=0.5%
Headset Mic - PartyLine: <=0.5%
Headset Mic - Line Out: <=0.5%
Program Input - PartyLine: <= 0.2%
Program Input -Speaker Out: <= 0.5%
Panel Mic - Party Line: < -65 dBu
Headset Mic - Party Line:< -70 dBu
Headset Mic - Line Out: < -55 dBu
Program Input - PartyLine: < -85 dBu
Program Input - Headset Out: < -60 dBu
ProgramInput - Speaker Out: < -60 dBu
Party Line - Speaker Out: < -50 dBu
Panel Mic - Party Line: >= 37 dB
Headset Mic - PartyLine: 41 dB 2 dB
Headset Mic - Hot Mic Out: 55 dB 3 dB
Headset Mic -Announce Out: 55 dB 3 dB
Program Input - Headset Out: >= 18 dB
Program Input - Speaker Out:>= 24 dB
Party Line - Headset Out: >= 34 dB
Party Line - Speaker Out: >= 40 dB
Panel Mic - Party Line <= 25 dB
Short Circuit Recovery Time >= 20 shorts in 20sec: <= 20 sec
* Station Capacity: Up to 40 RS-601 beltpacks or 10 speaker stations or 12 headset stations distributed over both channels
AnnounceOut: (1) XLR-3M (audio)
Announce Relay: (1) 1/4 in. (0.64 cm) phone jack(relay)
Hot Mic / IFB Interface: (1) 1/4 in. (0.64cm) phone jack
(1) Tone alert volume control
(2) ProgramON-OFF-INTERRUPT switches
(3) Program level controls
(2) Sidetone null controls
* Dimensions (W x H x D): 19" x 1.75" x 6.5"