User Manual

Model 970A-1 Control Interface

The Model 970A-1 is a protocol converter that allows any device capable of receiving and transmitting ASCII characters via an RS-232 port to control product selection on Audio Authority® AccessEZ™ Demonstration Networks.

Front Panel Overview

The front panel of the 970A-1 features the following:

• SYSTEM BUS: A connector for system bus communication.
• POWER LED: Indicates the power status of the unit.
• SERIAL (RS-232 PORT): For connecting to a host device via RS-232.
• POWER: Power button.
• USB PORT (NOT USED): A USB port that is not utilized in this model.
• FEATURE DIP Switches: Four switches (1, 2, 3, 4) for configuring features like simulator mode, echo, and baud rate.

Model number 701-16601B is also visible on the unit.

Connectivity and Configuration

DB9 Pin Out (Standard Cable)

DIP Switch Settings

Package Contents

Before installing, please verify the shipping carton contains:

• 970A-1 unit
• DB9 to DB9 serial interface cable
• User Manual

Note: Retain original packing material for potential returns. Contact Audio Authority immediately if any items are missing, providing the model number and invoice details.

Installation

1. Connect the 4-pin System Bus header on the 970A-1 to the Access system bus at any unused connector. The system bus wiring is color-coded as yellow, red, blue, black. The yellow wire is always on the side of the plug indicated in the diagram.
2. Connect the Serial port on the 970A-1 to the host device using an appropriate serial cable. A DB9 to DB9 serial interface cable is included.

Operation

Default communication parameters for the host port are 19,200 baud, no parity, 8 bits, and 1 stop bit. Operation can be verified using a terminal program on the host computer.

For questions, contact Audio Authority Technical Support at 800-322-8346.

Command Listing

Examples of Operation

The following text captures illustrate the 970A-1's operation, with line-by-line commentary.

Power-On Sequence

<power applied unit boots>
970A-1 Serial Interface unit Polling System Please Standby...

Commentary: Prints ID message on boot and begins polling the attached system.

Product Groups = 8

Commentary: After several seconds, shows the number of product groups.

Product Group Identification

E00:00-E00:07 E01:00-E01:03 E02:00-E02:03 S02:00-S02:15 E03:00-E03:03 S03:00-S03:07 E04:00-E04:03 S04:00-S04:07

Commentary: Prints a table showing valid ranges for products in each group. Groups addresses begin with "E" for Electronic modules or "S" for Speaker modules. Two digits follow for the group address (set by rotary switch), and two digits after the colon indicate the product number within that group.

Selecting Products

>+E00:00

Commentary: The first line indicates electronic group 0 is present and contains 8 products (E00:00 to E00:07). The "+" before the address requests selection of product E00:00. The command was entered from the serial port and echoed by the unit, followed by a carriage return.

> E00:00+

Commentary: This message is received from the system, confirming the request. Messages ending with "+" or "-" are status messages indicating selection or deselection, which can result from a 970A-1 command, PSB press, or control panel input.

Deselecting Products

>-E00:00
> E00:00-

Commentary: This command with "-" before the address deselects product E00:00. The output confirms the command, showing "-" on the right side.

Deselect Example (Electronic Groups)

Electronic groups allow only one product selection at a time.

>+E00:00
> E00:00+

Commentary: Turn on E00:00. Confirmed.

>+E00:01
> E00:00-
> E00:01+

Commentary: Turn on E00:01 as well. E00:00 disengages prior to E00:01 engaging.

Speaker Add Example

Speaker groups can connect up to 4 products simultaneously. Adding a fifth product causes the oldest selected product to disconnect.

>+S02:00
> S02:00+

Commentary: Add S02:00. Confirmed. S02:00 on.

>+S02:01
> S02:01+

Commentary: Add S02:01. Confirmed. S02:00, S02:01 on.

>+S02:02
> S02:02+

Commentary: Add S02:02. Confirmed. S02:00, S02:01, S02:02 on.

>+S02:03
> S02:03+

Commentary: Add S02:03. Confirmed. S02:00, S02:01, S02:02, S02:03 on.

>+S02:04
> S02:00-
> S02:04+

Commentary: Add S04:00 (a fifth product). S02:00 disengages to make room prior to S02:04 engaging.

Disconnect All

>DISCALL

Commentary: The 'DISCALL' command disconnects all products.

> S02:04-
> S02:03-
> S02:02-
> S02:01-
> E00:01-

Commentary: Shows individual disengagements after a DISCALL command.

Disable/Enable All

>DISABLE ALL

Commentary: DISABLE ALL locks out all product select buttons and prevents the 970 from accessing products.

>ENABLE ALL

Commentary: ENABLE ALL turns all product select buttons back on.

Bus Monitoring

The following messages were generated by user button presses on the display:

> S03:00+

Commentary: Speaker group 3, product 0 selected by button. Similar status message as a command, but no command was sent.

> S03:00-
> S03:01+

Commentary: Speaker group S03:01 was pressed, causing S03:00 to disconnect and S03:01 to connect. Speaker modules typically allow only one product selection at a time, similar to electronic modules. Multiple products can be selected by pressing and holding a button for over 1/2 second.

> S03:01-
> S03:02+

Commentary: S03:02 pressed briefly, disconnecting the currently selected product before adding it.

>S05:01+

Commentary: Speaker Group 5, product 1 selected via push button attached to module.

>DISC S05
> S05:01-

Commentary: DISC disconnects all devices in speaker group 5.

> E02:00+

Commentary: Electronic group 2, product 0 selected via push button attached to module.

>DISC E02
> E02:00-

Commentary: DISC disconnects all devices in electronic group 2.

Mute Functionality

>MUTE

Commentary: Mute is used for selecting multiple products within one audio mute/unmute bracket. The prompt changes to '=' as a reminder that mute is active.

=+S05:00
= S05:00+

Commentary: Select speaker group 5 product 0.

=+E02:01
= E02:01+

Commentary: And electronic group 2 product 1.

=END MUTE

Commentary: Then unmute to turn audio back on.

Status Command

>STATUS

Commentary: STATUS causes the 970 to report the current system geometry and state. This is useful if the program has been off and might have missed messages. Use STATUS to get an image of what is on or off, synchronized with the actual state.

Valid groups and product numbers include:

• E00:00-03
• E02:00-03
• E03:00-03
• S03:00-07
• E04:00-03
• S04:00-07
• E05:00-03
• S05:00-07

Currently selected units may be E02:01, S05:00.

KEYUP xxx Key press
KEYDN xxx Key release

Commentary: Status messages for switch reporting. 'xxx' is a 3-digit number in the range 001-120.

System Reset

>RESET

Commentary: RESET simply resets the 970 and switching system as if power has been cycled. The system may display messages like "970 Serial Interface unit Polling System Please Standby... Product Groups = 8" followed by group listings.

Contact Information

Audio Authority
2048 Mercer Road, Lexington, Kentucky 40511-1071 USA
Phone: 859-233-4599 • Fax: 859-233-4510
Customer Toll-Free USA & Canada: 800-322-8346
www.audioauthority.com • support@audioauthority.com

Document Revision: 752-690 Rev 20161213