MCE-325
RTS
MCE-325
RTS MCE-325 User Station
This four-channel, programmable intercom station may be used as a headset station or, with the addition of the MCS-325 modular speaker, as a speaker station. It may be mounted in a console or equipment rack via optional mounting kits. The MCE-325 can be used with either two-wire or four-wire intercom lines, or a combination of both. In the labeling on the MCE-325, references to channels 1, 2, 3, and 4 indicate two-wire lines; references to four-wire A and four-wire B indicate four-wire lines. The MCE-325 can be interfaced to a variety of external devices including external program sources, two-way radios, paging systems, and satellite circuits.
Product Weight: 4.25 lbs
Dimensions: 8.19"W x 8"D x 1.75"H
Technical Tools
PDF Documents
Manufacturer Specs
General
Bridging Impedance (to line): 10,000 Ω typical
Noise Contribution to 200Ω Line: -90 dBu
Call Signal Frequency: 20 kHz, crystal controlled
Talk-off Frequency: 24 kHz, crystal controlled
Microphone Preamplifier
Maximum Voltage Gain: 54 dB
Frequency Response: 100 Hz to 8,000 Hz, ±3 dB
Input Impedance: 1,000 Ω
Limiter Range: 30 dB
Headphone Amplifier
Maximum Voltage Gain: 30 dB
Frequency Response: 100 Hz to 8,000 Hz, ±3 dB
Headphone Impedance: 50 to 600 Ω
Output Power: 150 mW into 50 Ω
Output Voltage Level: 8 Vp-p
Speaker Amplifier
Maximum Voltage Gain: 30 dB
Frequency Response: 100 Hz to 8,000 Hz, ±3 dB
Speaker Impedance: 8 to 16 Ω
Output Power per Amplifier: 5W into 8 Ω
Output Voltage Level: 16 Vp-p
Power and Mechanical
Power Requirements
115 or 230 VAC, 20 VA max version available
12 to 25 VDC, 100 to 125 mA quiescent, 900 mA max
Material/Finish: Thermo-plastic front panel, aluminum case, light gray finish
Connectors
Intercom Line Connector: XLR type, 3-pin (male-female loop through on two-wire
Channel 1 and 2, or four-wire channel A; Female only on two-wire channel 3 and 4, or four-wire channel B
Dynamic Mic: XLR type, 6-pin female
Carbon Mic: ¼-inch phone jack, 3-circuit
Auxiliary Connector: 25-pin, female, D-Sub
Program Inputs: ¼-inch phone jack, 3-circuit
Speaker Output: ¼-inch phone jack, 3-circuit
Panel Mic: ¼-inch phone jack, metal busing, 3-circuit
Bridging Impedance (to line): 10,000 Ω typical
Noise Contribution to 200Ω Line: -90 dBu
Call Signal Frequency: 20 kHz, crystal controlled
Talk-off Frequency: 24 kHz, crystal controlled
Microphone Preamplifier
Maximum Voltage Gain: 54 dB
Frequency Response: 100 Hz to 8,000 Hz, ±3 dB
Input Impedance: 1,000 Ω
Limiter Range: 30 dB
Headphone Amplifier
Maximum Voltage Gain: 30 dB
Frequency Response: 100 Hz to 8,000 Hz, ±3 dB
Headphone Impedance: 50 to 600 Ω
Output Power: 150 mW into 50 Ω
Output Voltage Level: 8 Vp-p
Speaker Amplifier
Maximum Voltage Gain: 30 dB
Frequency Response: 100 Hz to 8,000 Hz, ±3 dB
Speaker Impedance: 8 to 16 Ω
Output Power per Amplifier: 5W into 8 Ω
Output Voltage Level: 16 Vp-p
Power and Mechanical
Power Requirements
115 or 230 VAC, 20 VA max version available
12 to 25 VDC, 100 to 125 mA quiescent, 900 mA max
Material/Finish: Thermo-plastic front panel, aluminum case, light gray finish
Connectors
Intercom Line Connector: XLR type, 3-pin (male-female loop through on two-wire
Channel 1 and 2, or four-wire channel A; Female only on two-wire channel 3 and 4, or four-wire channel B
Dynamic Mic: XLR type, 6-pin female
Carbon Mic: ¼-inch phone jack, 3-circuit
Auxiliary Connector: 25-pin, female, D-Sub
Program Inputs: ¼-inch phone jack, 3-circuit
Speaker Output: ¼-inch phone jack, 3-circuit
Panel Mic: ¼-inch phone jack, metal busing, 3-circuit