ClearOne comm 840T Audio Performance, Auto Mixer Parameters, Assignable Processing Blocks, RS-232

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CONVERGE PRO 840T DATA SHEET <

>CONVERGE PRO 840T BACK PANEL

>SPECIFICATIONS

Audio Performance

Conditions: Unless otherwise specified, all measurements are performed with a 20 Hz to 22 kHz BW limit (no weighting)

Frequency Response: 20 Hz to 22 kHz ±1dB

Noise (EIN): -126 dBu, 20 kHz BW, max gain, Rs=150 Ω

THD+N: <0.02%

Dynamic Range: 100 dB (non A-weighted) Crosstalk <-91 dB re 20 dBu @ 20 kHz channel to channel

Auto Mixer Parameters

Number of Open Microphones (NOM)

PA Adaptive Mode

First Mic Priority Mode

Last Mic Mode

Maximum # of Mics Mode

Ambient Level

Gate Threshold Adjust

Off Attenuation Adjust

Hold Time

Decay Rate

Matrix Mixing Parameters 29x30 matrix

8 analog in/out

1 speaker out (amplified)

12 expansion bus in/out

4 assignable processing blocks in/out

4 assignable fader blocks in/out

1 telco in/out

Assignable Processing Blocks

Filters:

All pass

Low pass

High pass

Low shelving

High shelving

Parametric EQ

Notch

CD Horn

Crossovers:

Bessel

Butterworth

Linkwitz-Riley

Compressor

Delay; adjustable up to 250 ms

Assignable Fader Blocks

Gain/Mute

Microphone Input Configuration

Input Gain Adjust

Mic or Line Level

Phantom Power on/off

Echo Cancellation on/off

Noise Cancellation on/off

Filters:

All Pass

Low Pass

High Pass

Notch

PEQ

Mute on/off

Chairman Override on/off

AGC on/off

Automatic Level Control on/off

Auto Gate/Manual gate

Adaptive Ambient on/off

Pre AEC channel

Mic/Line Inputs 1-4

Push-on mini-terminal block, balanced, bridging Impedance: < 5 KΩ

Nominal Level: adjustable -56 dBu to 0 dBu (7 dB step coarse gain adjustment) Maximum Level: -65 dBu to +20 dBu

Echo Cancellation: 130 ms tail time (works with 12 dB of room gain)

Noise Cancellation: 6–15 dB attenuation

Phantom Power: 24 V, selectable

Line Inputs 5-8

Push-on mini-terminal block, balanced, bridging Impedance: > 5 KΩ

Nominal Level: 0 dBu

Maximum Level: 20 dBu

Outputs 1-8

Push-on mini-terminal block, balanced Impedance: < 50 Ω

Nominal Level: 0 dBu

Maximum Level: 20 dBu

Amplifier Output

Binding post connection

10 Watts @ 4 Ω Impedance

THD + Noise: <0.5%

Telco Line

RJ-11

POTS (plain old telephone service) or analog extension from a PBX A-lead supervision provided

Telco Set

RJ-11

POTS (plain old telephone service) or analog extension from a PBX A-lead supervision provided

Telephone Audio Performance Conditions: Unless otherwise specified, all measurements are performed with Transmit Limiter and Receive ALC disabled Frequency Response: 250 Hz to 3.3 kHz ±1 dB THD+N: <0.3%, re-max level 250 Hz to 3.3 kHz SNR: >62 dB re max level

Telephone Echo Cancellation

Tail Time: 31 ms

Null: 55 dB nominal

Telephone Noise Cancellation

Noise Cancellation: 6–15 dB attenuation

Expansion Bus In/Out Proprietary Network RJ-45 (2), 1.9 Mbps

Category 5 twisted-pair cable, 200’ maximum cable length between any two Converge Pro devices

Ethernet

Autoswitching with Quality of Connection (QoC) 10/100 Ethernet Network Port

10/100 Ethernet PC Port RJ-45 Connectors

RS-232

Serial Command Protocol Only (Console software not supported on RS-232 port) DB-9 female 9,600/19,200/38,400/57,600/115,200 baud rate; 8 bits, 1 stop, no parity

Hardware flow control on (default)/off

USB

Version 2.0 Compatible

Type: B-connector

Control/Status DB-25 female A/B (2)

Inputs A/B: active low (pull to ground)

Outputs A/B: open collector, 40 VDC max, 40 mA each

+3.3 VDC pins (2) (300 mA over-current protected)

Configuration & Administration Software

Convergetm Console

Power Input Range

Auto-adjusting

100–240 VAC; 50/60 Hz

Power Consumption

30W Typical

Dimensions (L x D x H) 17.25” x 10.25” x 1.75” 43.8 x 26 x 4.5 cm

Weight

7.5lbs/3.3375 kg unit weight

12 lbs/5.4kg shipping weight

Operating Temperature

14° F/-10° C to 122° F/50° C ambient room temperature

Approvals & Compliance

AES48-2005: AES standard on interconnections

Grounding and EMC practices — Shields of connectors in audio equipment containing active circuitry (self certified)

U.S.A. & Canada CSA safety listed

EU Countries

RoHS compliant WEEE compliant

See product manual for additional details

Optional Accessories

Converge Pro 880

Converge Pro 880T

Converge Pro 8i

Converge SR 1212

Converge SR 1212A

Converge Pro 840T

Converge Pro TH20

Tabletop Controller

Part Number

910-151-840 Converge Pro 840T – 4-channel AEC Microphone Mixer with built-in telephone hybrid amplifier

>CLEARONE LOCATIONS

Headquarters:

Latin America

EMEA

APAC

Salt Lake City, UT USA

Tel: 801-974-3621

Tel: 44 (0) 1189 036 053

Tel: 801-303-3388

5225 Wiley Post Way

global@clearone.com

global@clearone.com

global@clearone.com

Suite 500

 

 

 

Salt Lake City, UT 84116

 

 

 

Tel: 801-975-7200

 

 

 

Toll Free: 800-945-7730

 

 

 

Fax: 801-977-0087

 

 

 

sales@clearone.com

 

 

 

© 2009 ClearOne Communications, Inc. All rights reserved. Information in this document is subject to change without notice. Other product names may be registered trademarks of their respective owners who do not necessarily endorse ClearOne or ClearOne’s products in the United States and/or other countries.

ClearOne Document: 802-151-840 Revision 1.5 April 2009.

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Contents Convergetm PRO 840T Configuration & Administration Software Microphone Input ConfigurationTelephone Noise Cancellation Power Input Range

840T specifications

The ClearOne COM 840T is a compact and innovative audio conferencing solution designed to enhance communication in various settings, including conference rooms and meeting spaces. This device is aimed at providing exceptional audio quality and ensuring seamless collaboration among participants, whether they are in the same room or joining remotely.

One of the main features of the COM 840T is its integrated Echo Cancellation technology. This allows participants to speak naturally, as the system intelligently reduces echo, background noise, and feedback. The result is crystal-clear audio that ensures everyone can be heard without interruptions, fostering a more productive meeting environment.

The COM 840T also incorporates Beamforming Microphone Array technology. This advanced feature utilizes multiple microphones arranged strategically to pick up sound from all directions while focusing on the speaker’s voice. This ensures that voices are captured with clarity, even if the speakers are sitting at varying distances from the device. This kind of directional audio capability is crucial for hybrid meetings where some participants may be joining remotely.

Another noteworthy characteristic of the ClearOne COM 840T is its ease of integration. The device can connect with various conferencing applications and platforms, making it compatible with popular services such as Zoom, Microsoft Teams, and Google Meet. This versatility allows organizations to leverage their existing technology while upgrading their audio quality.

The COM 840T supports high-definition audio transmission via its robust audio processing technology. This ensures that voices maintain their natural tone, enabling clear communication without distortion. Additionally, the device enables connection through Bluetooth, making it easy for users to connect their smartphones or tablets for audio streaming.

The user-friendly interface of the COM 840T is also a significant feature. It comes with intuitive controls that make it easy to manage audio levels and settings, allowing users to focus more on their discussions rather than technical adjustments.

In summary, the ClearOne COM 840T embodies cutting-edge conferencing technology with its echo cancellation, beamforming microphones, broad compatibility, and high-definition audio processing. These characteristics make it a valuable tool for organizations looking to improve their communication quality and overall meeting effectiveness.