Crestron CNX-PAD8A Professional Audio Distribution Processor Operations Guide
This document was prepared and written by the Technical Documentation department at: Crestron Electronics, Inc.
Crestron CNX-PAD8A Professional Audio Distribution Processor Contents Professional Audio Distribution Processor: CNX-PAD8A 1 Description................................................................................................................................. 1 Functional Description ................................................................................................ 1 Physical Description..................................................................................................
Crestron CNX-PAD8A Professional Audio Distribution Processor Professional Audio Distribution Processor: CNX-PAD8A Description Functional Description The Crestron Professional Audio Distribution Processor, CNX-PAD8A is an enhanced version of Crestron's professional high-end audio distribution system. It delivers audio from up to eight sources into as many as eight separate rooms and can be expanded with additional CNX-PAD8A chassis to 32 rooms (using the optional Audio Switcher Bussing Kit).
Professional Audio Distribution Processor Crestron CNX-PAD8A General Application Scenario of the CNX-PAD8A CRESTRON CONTROL SYSTEM CRESNET AUDIO SOURCES L1 R1 L8 R8 CNX-PAD8A L1 R1 L8 R8 CNAMPX-16x60 L1 R1 SPEAKERS LOCATED IN ROOM WITH NO LOCAL AV L8 R8 SPEAKERS LOCATED IN ROOM WITH LOCAL AV NOTE: Other applications are discussed in "Programming with the Crestron AppBuilder" on page 11.
Crestron CNX-PAD8A Professional Audio Distribution Processor CNX-PAD8A Physical Views 3.310 in (8.407 cm) 3.480 in (8.839 cm) C R ES T R O N E L E C T R O N IC S I N C . R O C K L E IG H , N . J . 0 7 6 4 7 USA 16.910 in (42.951 cm) 8.440 in (21.438 cm) 17.100 in (43.434 cm) 19.000 in (48.260 cm) 3.469 in (8.811 cm) CRESTRON Operations Guide – DOC.
Professional Audio Distribution Processor Crestron CNX-PAD8A CNX-PAD8A Ports A number of ports are provided on the back of the CNX-PAD8A. Each has a silkscreened label. Refer to the illustration and descriptions below. CNX-PAD8A Ports C R E S T R O N E L E C T R O N IC S I N C . R O C K L E IG H , N .J . 0 7 6 4 7 U S A NET NOTE: There are no RJ-11 connectors on this product.
Crestron CNX-PAD8A Professional Audio Distribution Processor CNX-PAD8A Indicators There are 11 LED indicators primarily located on the front panel of the CNX-PAD8A (one of the 11indicators is on the back panel). Each LED has a silkscreened label. Refer to the illustration and descriptions that follow. CNX-PAD8A Indicators CRESTRON PWR (Power) This LED illuminates when 24 volts from the network is supplied to the CNX-PAD8A.
Professional Audio Distribution Processor Crestron CNX-PAD8A Leading Specifications The three tables after this paragraph provide a summary of leading specifications for the CNX-PAD8A.
Crestron CNX-PAD8A Professional Audio Distribution Processor Preamp Specifications of the CNX-PAD8A (Per Channel) SPECIFICATION Input Impedance Output Impedance Total Harmonic Distortion (THD) S/N Ratio Maximum Input Level (Flat Mode) Maximum Output Level Crosstalk Gain Range (Excluding Mute) Volume Steps Mute DETAILS 54K Ohms 37.5 Ohms < 0.02% >-100 dB 3.2 RMS 2.
Professional Audio Distribution Processor Crestron CNX-PAD8A NOTE: If rack mounting is not required, rubber feet are provided for tabletop mounting or stacking. Apply the feet near the corner edges on the underside of the unit. Refer to "Stacking" on page 8 for details. NOTE: Reliable grounding of rack mounted equipment should be maintained. Particular attention should be given to supply connections other than direct connections to the branch circuit. (e.g., use of power strips).
Crestron CNX-PAD8A Professional Audio Distribution Processor Hookup Refer to the hookup diagram after this paragraph. Other than making the power connection last, complete the connections in any order. RCA cables are not supplied. NOTE: Refer to "Network Wiring" on page 9 when making connections to the port labeled NET. Hookup Connections for the CNX-PAD8A REFER TO LATEST REVISION OF CNX-ASBK OPERATIONS & INSTALLATION GUIDE (DOC. 8143) FOR DETAILS REGARDING EXPANSION TO MORE THAN 8 ROOMS.
Professional Audio Distribution Processor Crestron CNX-PAD8A Resistance Equation R < 40,000 L x PF Where: R = Resistance (refer to table below). L = Length of run (or chain) in feet. PF = Power factor of entire run (or chain). The required wire gauge should be chosen such that the resistance value is less than the value calculated in the resistance equation. Refer to the table after this paragraph. Wire Gauge Values RESISTANCE (R) WIRE GAUGE 4 16 6 18 10 20 15 22 13 Doubled CAT5 8.
Crestron CNX-PAD8A Professional Audio Distribution Processor 3. From the Viewport menu, select Functions | Set Network ID. The software checks the baud rate and then opens the "Set Network ID" window. 4. In the "Set Network ID" window, select the CNX-PAD8A from the Current Network Devices text window. 5. From the Choose the new network ID for the selected device (Hex): text box, select the new NET ID for the CNX-PAD8A. 6. Click Set ID to initiate the change.
Professional Audio Distribution Processor Crestron CNX-PAD8A Typical Room Audio Configurations for the CNX-PAD8A The Crestron AppBuilder is fully integrated with Crestron's suite of software development tools, including SIMPL Windows, VT Pro-e, Crestron Database, User IR Database, and User Modules Directory. The Crestron AppBuilder accesses these tools behind the scenes, enabling you to easily create robust systems.
Crestron CNX-PAD8A Professional Audio Distribution Processor Configure CNX-PAD8A Program To create a program with a CNX-PAD8A, refer to the table below for initial configuration information.
Professional Audio Distribution Processor Crestron CNX-PAD8A CNX-PAD8ASymbol Input Signal Functional Descriptions INPUT NAME / RANGE TYPE A / D* through D through D through D through D through A through A through A through A through A through A through
Crestron CNX-PAD8A Professional Audio Distribution Processor NOTE: VisionTools Pro (VT Pro) is a Windows compatible software package for creating Crestron touchpanel screen designs. The CNX-PAD8A Basic Program The CNX-PAD8A basic SIMPL Windows program is described below in block diagrams. The diagrams show the symbols that are required to perform the audio distribution functions. There may be up to 32 room outputs of a daisy-chained CNX-PAD8A system but, for clarity, only one is described.
Professional Audio Distribution Processor Crestron CNX-PAD8A Interlock symbol S-3 receives the source selection signals (A) from the touchpanel. The selected signal is retained and the interlock sends the appropriate feedback signal (D) to the touchpanel to illuminate the corresponding button indicator. Detail View of Interlock Symbol (S-3) in SIMPL Windows’ Programming Manager Analog initialize symbol S-2 receives the source select signal from the touchpanel (A) and outputs analog signal room_1_source.
Crestron CNX-PAD8A Professional Audio Distribution Processor Symbols S-6 and S-7 illuminate the CNX-PAD8 front panel LED for the corresponding room that is enabled to receive audio. The room audio source selection signal (F), from the S-2, causes S-6 to signal S-7 that a source is selected by room 1. NOT symbol S-7 sends the signal to illuminate the front panel LED (E).
Professional Audio Distribution Processor Crestron CNX-PAD8A The next two symbols (S-4 and S-5) control the mute function of the CNX-PAD8A. While the room is receiving audio, pressing the MUTE button of the touchpanel (C) clocks the toggle S-4 to output the room_1_mute signal from the high output. This signal is sent to the CNX-PAD8A (E) to mute the audio. When in the “mute mode”, pressing the touchpanel MUTE button again clocks the toggle to remove the mute signal.
Crestron CNX-PAD8A Professional Audio Distribution Processor With additional programming, the CNX-PAD8A can adjust settings for each room. In the basic program, these extended capabilities are factory set to values that are provided by this symbol (G). Detail View of Analog Initalize Symbol (S-8) in SIMPL Windows’ Programming Manager Operations Guide – DOC.
Professional Audio Distribution Processor Crestron CNX-PAD8A The CNX-PAD8A receives signals from the previously discussed symbols. The CNX-PAD8A receives (E) audio from the selected source, signals to illuminate the front panel LED for Room 1 when it is enabled to receive audio, the audio volume level and mute signal. The remaining inputs (G) are not used in the CNX-PAD8A basic program.
Crestron CNX-PAD8A Professional Audio Distribution Processor Further Inquiries If after reviewing this Operations Guide for the CNX-PAD8A, you cannot locate specific information or have questions, please take advantage of Crestron's award winning customer service team in your area. Dial one of the following numbers. • In the US and Canada, call Crestron’s corporate headquarters at 1-888-CRESTRON [1-888-273-7876]. • In Europe, call Crestron International at +32-15-50-99-50.
Professional Audio Distribution Processor Crestron CNX-PAD8A Return and Warranty Policies Merchandise Returns / Repair Service 1. No merchandise may be returned for credit, exchange, or service without prior authorization from CRESTRON. To obtain warranty service for CRESTRON products, contact the factory and request an RMA (Return Merchandise Authorization) number. Enclose a note specifying the nature of the problem, name and phone number of contact person, RMA number, and return address. 2.
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Crestron Electronics, Inc. 15 Volvo Drive Rockleigh, NJ 07647 Tel: 888.CRESTRON Fax: 201.767.7576 www.crestron.com Operations Guide – DOC. 8174 12.01 Specifications subject to change without notice.
