Telex manual EMS-4001Specifications

EMS-4001 Specifications

General

Input and Output Power:

AC Input: 100-240 VAC, 50/60 Hz

Channel Power (each channel): 24 ±1 VDC, 1 A Dimensions: 1.75” (44.5 mm) high, 19” (483 mm) wide, 10.31” (261.9 mm) deep

Weight: approximately 4.5lbs (2kg) Environmental Requirements:

Storage: -20°C to 80°C; 0% to 95% humidity, noncon- densing

Operating: -15°C to 60°C; 0% to 95% humidity, non- condensing

Program Input Connectors Input Level: 100mV maximum

Voltage Gain: 25 ±3 dB

Output Level (to intercom channel): 1.0Vrms nominal, 2.3Vrms max.

Input Impedance: 75k ohms

Common Mode Rejection: Greater than 50 dB

Connector type: DB9F female, 9-pin D-Sub Pin 1: Common

Pin 2: Channel 3 program in low

Pin 3: Channel 4 program in low

Pin 4: Channel 5 program in low

Pin 5: Channel 6 program in low

Pin 6: Channel 3 program in high

Pin 7: Channel 4 program in high

Pin 8: Channel 5 program in high

Pin 9: Channel 6 program in high

Intercom Channels, Balanced Mode (BAL/UNBAL switch set to BAL)

Output Level: 1 Vrms nominal

Input Impedance: 300 ohms ±10%

Bridging Impedance: greater than 10,000 ohms

Sidetone: -40 dB, 35 dB adjustable range

Figure 4 - EMS-4001 sidetone adjustment locations.

Contact Information

Telex Communications, Inc.

12000 Portland Avenue South

Burnsville, Minnesota 55337

Telephone: (800) 392-0498

Fax: (800) 323-0498

Form Number: 9320-7713-000 Rev B

Date: December, 2006

Call Signaling:

Send: 20 kHz ±100 Hz, 0.5 Vrms ±10%

Receive: 20 kHz ±800Hz, 100 mVrms Mic-Kill Frequency:

Send: 24 kHz ±100 Hz, 0.5 Vrms ±10%

Receive: 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 for each channel Balanced Configuration Pinouts

Pin 1: DC/audio Common

Pin 2: Intercom audio low and +24 VDC output

Pin 3: Intercom audio high and +24 VDC output

Intercom Channel, Unbalanced Mode (BAL/UNBAL switch set to UNBAL)

Output Level: 2 Vp-p (750 mVrms)

Input Impedance: 200 Ohms ±10%

Bridging Impedance: greater than 10k ohms ±5% Call Signaling:

Send: 11 ±3 VDC

Receive: 4 VDC minimum

Connector Type: One XLR-3M for each channel Pin 1: Common

Pin 2: +30 ±1 VDC output

Pin 3: Intercom audio high

Expansion Input/Output

Connector Type: 1/8” Stereo phone jack

Tip: Talk output

Ring: Listen input

Sleeve: Common

Ordering Information

EMS-4001

4 channel expansion station with 2.0 amp power sup- ply with instantaneous auto reset in a single unit. Catalog Number: 90007713000

This specifications information is preliminary and is subject to change without notification.

Brand names mentioned are the property of their respective companies.