Telex MS-4002 Power Supply User Manual


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MS-4002 Specications
General
Power Requirements:
AC Input: 100-240 VAC, 50/60 Hz
Channel Power: 24 VDC nominal (12 to 30 VDC), 65 to 150
mA
MS-4002 is capable of supplying 4 amps overall
Dimensions: 1.75” (44.5 mm) high, 19” (483 mm) wide,
10.31” (261.9 mm) deep
Weight: approximately 4.5 lb (2 kg)
Environmental Requirements:
Storage: -20°C to 80°C; 0% to 95% humidity, non-condens-
ing
Operating: -15°C to 60°C; 0% to 95% humidity, non-con-
densing
Dynamic-mic Headset
Microphone: 50 to 200 Ω, dynamic (balanced or unbalanced)
Headphones: 150 to 600 Ω, monaural
Connector Type: XLR-4M
Pin 1 Microphone low
Pin 2 Microphone high
Pin 3 Headphone high
Pin 4 Headphone low
Panel Microphone Input
Microphone Type: Electret condenser
Power: Phantom (+5 VDC)
Nominal Level: -42 dBu
Maximum Level: -25 dBu
Connector Type: IKP12 (MCP-90 series, stereo plug connec-
tor)
Program Input
Input Level: 100mV maximum
Voltage Gain: 25 ±3 dB
Output Level (to intercom channel) :1.0 Vrms nominal, 2.3
Vrms max.
Input Impedance: 75 k
Common Mode Rejection: Greater than 50 dB
Connector Type: 9-pin female D-sub (DE9S)
Pin 1 Ground
Pin 2 Program 1 input low
Pin 3 Program 2 input low
Pin 4 NC
Pin 5 NC
Pin 6 Program 1 input high
Pin 7 Program 2 input high
Pin 8 NC
Pin 9 NC
Intercom Channels, Balanced Mode (Both Back Panel and
internal switches (BAL/UNBAL) must be set to same set-
ting)
Output Level: 1 Vrms nominal
Input Impedance: 300 Ω
Bridging Impedance: greater than 10,000 Ω
Sidetone: -40 dB, 35 dB adjustable range
Call Signaling:
Send: 20 kHz ±100 Hz, 0.5 Vrms ±10%
Receive: 20 kHz ±800 Hz, 100 mVrms
Mic-Kill Frequency:
Send: 24 kHz ±300 Hz, 0.5 Vrms ±10%
Detect: 24 kHz ±800 Hz, 100 mVrms
Noise Contribution: less than -70 dB
Common Mode Rejection Ratio: greater than 50 dB
Connector Type: One XLR-3M and XLR-3F pair, wired in paral-
lel, for each channel (permits “loop-thru” connection).
XLR-3 Balanced Conguration Pinouts
Pin 1: Common
Pin 2: Intercom audio low and +24 VDC input
Pin 3: Intercom audio high and +24 VDC input
Intercom Channel, Unbalanced Mode (Both Back Panel
and internal switches (BAL/ UNBAL) have to be set to
same setting)
Output Level: 1 Vrms ±10%
Input Impedance: 150 Ω
Bridging Impedance: greater than 10,000 Ω
Call Signaling:
Send: 11 ±3 VDC
Receive: 4 VDC minimum
Connector Type: Uses same connectors as for balanced mode,
above, but with pinouts modied by BAL/UNBAL switch on
back panel as follows:
XLR-3 Unbalanced Conguration Pinouts
Pin 1: Common
Pin 2: +24 VDC input
Pin 3: Intercom audio high
PA Output
Output Level: 235 mVrms nominal
Connector Type: ⅛-inch Stereo Phone Jack
Tip: PA output high
Ring: Not used
Sleeve: Common
Speaker Output
Output Level: 0 dB nominal (1.0 Vrms)
Output Impedance: 1000 Ω nominal
Frequency Response: 200 Hz to 8 kHz +1/-3dB
Connector Type: RCA Phono Jack
Tip: Speaker output high
Sleeve: Common
Expansion Input /Output
Type: 2.0 mm stereo phone jack
Tip: Talk output
Ring: Listen input
Sleeve: Common
Headphone Amplier
Voltage Gain: 30 ±3 dB
Maximum Output: 250 mW ±10% into 150 Ω, 65 mW ±10%
into 600 Ω
Frequency Response: 200 Hz to 8 kHz +1/-3db
Incoming Call Beep Tone: 2 kHz, at the headphones
Total Harmonic Distortion: Less than 0.2% at 200 mW
Sidetone: 18 ±2 dB, adjustable
Ordering Information
MS-4002
4 channel user/main station with 4.0 amp power sup-
ply
Catalog Number: 90007799000
This specications information is preliminary and is subject to change without notication.
Brand names mentioned are the property of their respective companies.
Contact Information
Telex Communications, Inc.
12000 Portland Avenue South
Burnsville, Minnesota 55337
Telephone: (800) 392-0498
Fax: (800) 323-0498
Form Number: 38110-426B
Date: February, 2006
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