Clear-Com MS-222 Communication Master Station 2-Channel

Clear-Com MS-222 Communication Master Station 2-Channel

The MS-222 is a rack-mount, two-channel main station with a speaker, optional goose neck microphone (MS-222GM), regulated power supply and a versatile monitoring system. It features excellent speech intelligibility in all noise-levels. The MS-222 contains two mic preamps with limiters for each microphone input. Each microphone preamp is optimized for the type of microphone used with it. The MS-222's four-watt power amp can drive a standard Clear-Com headset to levels greater than 110 dB SPL. The MS-222 provides DC voltage and the ability to talk & listen on two separate channels. It supports and monitors two intercom lines containing as many as 30 remote head-set or 6 remote speaker stations.

Specifications:

• HEADSET MICROPHONE PRE-AMP:
  • Dynamic Headset Input: Input Impedance - 1 KOhms
  • Input Level: 55 dBv nominal
  • Frequency Response: 250 Hz to 12 KHz, contoured for intelligibility.
  • Gain from Headset to Intercom Line: +41 dB
• PANEL MICROPHONE PRE-AMP:
  • Input Level: 45 dBv nominal
  • Frequency Response: 250 Hz to 12 KHz, contoured for intelligibility.
  • Gain from Headset to Intercom Line: +31 dB
• HEADPHONE/SPEAKER AMPLIFIER:
  • Load Impedance: 8 Ohms
  • Output Level: at least +20 dBv* across 600 ohm
  • Distortion: <0.2% THD at KHz
  • Frequency Response: 200-18KHz +/-2dB
  • Gain from Intercom Line: +3-7- -d-B
• PROGRAM INPUT:
  • Input Level Ref.: -65 dBv* (mic) -15 dBv (line)
  • Input Impedance: > 1 KOhms (mic) >100 KOhms (line)
  • Frequency Response: 150 Hz to 18 KHz
• INTERCOM LINE DRIVE/RECEIVE CIRCUITS:
  • Impedance, Output Load: > 10 KOhms (200Hz - 1 0 KHz)
  • Level, Line (200 ohm load): -9 dBv (nominal) +5dBv (max before clip)
  • Sidetone Null Capability: > 25 dB (200Hz - 1 0 KHz)
  • Crosstalk, Station Induced Ch. to Ch.: >60 dB
  • Noise, SN Ratio in Listen Channels: >60 dB
• INTERCOM SYSTEM SPECIFICATIONS (STANDARD CLEAR-COM):
  • Usable Line Quality: > 100 Stations
  • Total Line Length on One Channel: > 5000 feet
• POWER SUPPLY:
  • Output Voltage: +30 Volts
  • Output Ripple: < 1 mili volt AC RMS
  • Output Noise: < -70 dBv AC RMS
  • Current limit: 1.0 A
• CONNECTORS:
  • Intercom: 6 XLR-3 (3-CH A, 3-CH B)
  • Program: XLR-3F
  • SA: XLR-3M
• AC POWER REQUIREMENTS: 105-125/210-250 VAC, 50 to 60 Hz, 60 VA
• PHYSICAL SPECIFICATIONS:
  • Dimensions: 19"W x 3.5"H x 1 0.0D (483mm x 89mm x 254mm)
  • Weight: 7.4 Ibs. (3.4 Kg)
  • Operating Temperature Range: -32-1 22 F (0-50 C)