Crestron electronic DMTH4 Audio Outputs AUX and Codec, Telephone Line Jack, Programmable Inputs

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DMTH4

Audio Outputs (AUX and CODEC)

The AUX and Codec outputs are a balanced differential configuration and include an attenuator to reduce the signal to mic level. Wire these outputs as indicated in the following illustration.

DM Out

Destination

+

+

-

Shield -

DM Out to Balanced Input

(3-Wire)

Potentiometer Connection for

Analog Control of Gain

10K Linear Potentiometer

CCW CW

+5V

To Programmable Input Pin Gnd

Contact Closure as Programmable Input

To Programmable Input Pin

Gnd

DC Voltage Source as Programmable Input

DM Out

+

-

Shield

Destination

+

To Programmable Input Pin

0VDC (Off) to +5VDC (On)

Gnd

Output RP Gain Control on the Programmable Inputs control tab in the Control Panel GUI. See the

DM Out to Unbalanced Input

(3-Wire)

DM Out

Destination

+

+

-

Shield

 

DM Out to Unbalanced Input

(2-Wire)

Telephone Line Jack

Connect a standard telephone cable with RJ11 connec- tors between the back panel Telephone Line Jack and the host telephone system.

Programmable Inputs

Rear Panel Ctrl tab in the Control Panel software Help for setting all programmable input parameters.

Programmable Outputs

Programmable outputs are used to indicate the current state of a programmable input, monitor activity on telephone or codec interfaces, and monitor active preset changes. Each programmable output is the electrical equivalent of a contact closure to ground. When a programmable output is “active”, it conducts current to ground. When the programmable output is “inactive”, no current flows to ground. The maximum usable voltage for the programmable outputs is 40 V and they will safely conduct up to 100 mA DC continu- ous. Following are some typical uses for the program- mable outputs.

LED is on when the programmable output is active

+5VDC (from Programmable I/O

 

Pins 14, 20, 25)

380 Ohms

 

Programmable Output Pin

 

Programmable inputs are provided to enable external control over a variety of parameters. Each input can respond to a contact closure, a DC voltage source, or the variable voltage output from a potentiometer. The following illustrates common connections to the pro- grammable input pins. (See also Programmable

Inputs and Outputs Wiring Example.)

No external pull-up resistors are necessary because each programmable input is internally pulled up through a 100K resistor to +5V. When using a continuous voltage with one of the programmable inputs, the function of the programmable input must be set to either Analog Input RP Gain Control or Analog

LED is off when the programmable output is active

+5VDC (from Programmable I/O

 

Pins 14, 20, 25)

380 Ohms

Programmable Output Pin

 

Gnd (from Programmable I/O

 

Pins 1, 8, 13)

 

Relay is on when the programmable output is active

Relay Coil

1N4001

Coil current <100mA

or equiv.

Programmable Output Pin

Gnd (from Programmable I/O

Pins 1, 8, 13)

External DC Voltage Source (<40VDC)

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LECTROSONICS, INC.

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Contents DMTH4 DMTH4 LECTROSONICS, INC Important Safety Instructions Table of Contents Introduction Unpacking the unitRear Panel Controls and FeaturesFront Panel Hardware Installation Installing the DM system into a rackCables Audio ConnectionsAudio Outputs AUX and Codec Telephone Line JackProgrammable Inputs Programmable OutputsCodec and TEL Remote Control Ports Expansion I/O portsInstalling LecNet2 Software and USB Driver Installing LecNet2 SoftwareInstalling the LecNet2 USB Driver USB driver installation Windows XPInstallation of Additional Units or LecNet 2 devices USB Driver Installation Windows Control System Interconnections Basic System SetupInitial Setup Master/Slave Configuration Using the DMTH4 Control Panel to Change Master/Slave ModeInitial Setup Hints Example Teleconferencing Setup DMTH4Setting up the DM1624 Expansion Matrix Setting up the DMTH4 Main MatrixSetting up the DM1624 Main Matrix Setting up the DMTH4 Output Source Multiplexer Make a Telephone Call Using a Telephone Set Make a Telephone Call Using the Activity TabUsing the Touch Tone Pad Making a Phone CallUse the Type the number to dial box Use the Phone BookConnecting to the Codec Interface using the Activity Tab FCC Part 68 Compliance FCC Part 15 ComplianceInstallation Guide Rio Rancho, NM Limited ONE Year Warranty