Radio Systems Millenium

Radio Systems Millenium-H Hybrid Console

Radio Systems Millenium-H Hybrid Console

Installation and Operation Manual

Page 1

Radio Systems Millenium Hybrid Broadcast Manual — Part # MAN-MILLCONH

For Console Models:

RS-6H5P with removeable barrier strip 5 pin I/O connectors

RS-6HRJ with RJ-45 “StudioHub+” I/O connectors

RS-12H5P with removeable barrier strip 5 pin I/O connectors

RS-12HRJ with RJ-45 “StudioHub+” I/O connectors

RS-18H5P with removeable barrier strip 5 pin I/O connectors

RS-18HRJ with RJ-45 “StudioHub+” I/O connectors

Manual Revision

07-20-2017 for serial numbers 101255 and higher

Revised to include

Illustration B-1 Updated to detail new Control Board part #18516

Illustration B-1 Updated to detail “classic” remote control protocol

Sect 2.2.9 Updated to reference New Control Prom 18406 Functionality

Illustration B-2 Updated to detail Cue/IFB Control

Illustration B-3 Included to detail “Classic” Control

Sect 1.3.2 Updated to reference new Switch-mode Power Supplies

Sect 2.2.3 Updated to reference correct Jumper designations

Illustration D-2 Corrected to reference part #18516

Illustration D-7 Corrected to reference part #10887

Copyright 2010 by Radio Systems Design, Inc. All rights reserved. Radio Systems Design, Inc. reserves specification privileges. Information in this manual is subject to change without notice.

Technical support: +1-856-467-8000 or [email protected]

Radio Systems Millenium-H Hybrid Console

Installation/Wiring/Operation ...........................................................6

1.1

1.2

Console Placement .................................................................. 6

Opening the Console ............................................................... 6

1.3 Power Supply ........................................................................... 6

1.3.1 Installation........................................................................ 6

1.3.2

1.4

Configuration

................................................................... 6

Wiring Access Layout ...................................................... 7

1.4.1 Connectors ...................................................................... 7

1.4.2 Inputs ............................................................................... 7

1.4.3 Outputs ............................................................................ 7

1.4.4 Control ............................................................................. 7

1.4.5

1.4.6

Wiring Quick Connectors (5-Pin) ..................................... 7

Wiring RJ-45 Connectors (RJ-45) .................................... 7

1.5 Operation ......................................................................... 7

1.5.1

1.5.2

1.5.3

1.5.4

Input Assignment ............................................................ 8

Mic Use ........................................................................... 8

Cue Circuitry ................................................................... 8

Output Routing ................................................................ 8

1.5.5 Mix-Minus ........................................................................ 8

1.5.6

1.5.7

1.5.8

1.5.9

1.5.10

Illus. A-1

Illus. A-2

Illus. A-3

Monitor Amplifier Input Select

......................................... 8

Headphone Amplifier Input Select

.................................. 8

VU Meter Selection (6 Channel Consoles Only).............. 9

Remote Control ............................................................... 9

Eight Position Switcher .................................................... 9

CT-2002 Console Clock/Timer ............................................... 10

CT-2002 Console Clock/Timer Wiring Diagram ..................... 11

LED Meter Board with Talkback Microphone ......................... 12

Six Channel Control Board .............................................................13

2.2.3.2

2.2.4

2.2.5

2.2.6

2.2.6.1

2.2.6.2

2.2.6.3

2.2.6.4

2.2.7

2.2.8

2.2.9

2.2.10

2.1 Overview ................................................................................ 13

2.2

2.2.1

2.2.2

2.2.3

2.2.3.1

Function Programming .......................................................... 13

Channel Power-Up Mode .............................................. 13

Remote Control Options – by Channel .......................... 14

Remote Control Options – by Input ............................... 14

Pulse/Holding Remote Control ...................................... 14

Send Through of Remote On/Off Commands ............... 14

Muting Buses ................................................................. 14

Timer Reset ................................................................... 15

Cue Options by Channel................................................ 15

Cue on Fader Detent ..................................................... 15

Auto Cue ........................................................................ 15

Cue Defeat on Channel ON ........................................... 15

Cue Exclusive ................................................................ 15

Cue Options by Input ..................................................... 15

Off (Ready) Lamp Options ............................................. 15

Remote Control Connector ............................................ 16

Optional Remote Board ................................................. 16

Page 2

Radio Systems Millenium-H Hybrid Console

2.2.11

Illus. B-1

Illus. B-2

Illus. B-3

Illus. B-4

Monitor Control Board.................................................... 16

Six Channel Control Board Jumper Settings ......................... 17

Remote Control Wiring (factory default with cue for IFB) ...... 18

Remote Control Wiring (“classic” mode) ................................ 19

Monitor Board Wiring ............................................................. 20

Six Channel Audio Board ...............................................................21

3.1

3.1.1

3.1.2

3.1.3

3.2

3.2.1

3.2.2

3.3

3.3.1

3.3.2

Illus. C-1

Illus. C-2

Illus. C-3

Input Connectors ................................................................... 21

Input Wiring .................................................................... 21

Unbalanced Audio.......................................................... 21

Mono Inputs .................................................................. 21

Input Gain .............................................................................. 21

Channel Sensitivity ....................................................... 21

Input Sensitivity.............................................................. 21

Patch Point Connections ....................................................... 22

Pre-Fader, Pre-On/Off Patch Point ................................ 22

Post- Fader, Pre-On/Off Patch Point ............................. 22

Six Channel Audio Board - 5 Pin ........................................... 23

Six Channel Audio Board - RJ-45 .......................................... 24

Input Attenuator (IAD) Programming ..................................... 25

Output Board ...................................................................................26

4.1 Overview ................................................................................ 26

4.2

4.2.1

4.2.2

4.2.3

4.2.4

Audio Circuitry ....................................................................... 26

Program and Audition Outputs ...................................... 26

4.2.5

4.3

4.3.1

4.4

TEL (Telephone) Output ............................................... 26

External Monitor and Headphone Inputs ...................... 26

Headphone Outputs ...................................................... 27

Monitor Sends................................................................ 27

Control Wiring ........................................................................ 27

Mute and Timer Reset Bus Connections ...................... 27

Talk Back Connections ......................................................... 28

4.4.1 Intercom ......................................................................... 28

4.5

4.5.1

4.5.2

4.5.3

4.5.4

4.5.5

4.5.6

Illus. O-1

Illus. O-2

Illus. O-3

Illus. O-4

Internal Adjustments and Input Level Calibration .................. 28

Mix Bus Output Level Adjust .......................................... 28

VU Meter “0” Calibration ............................................... 29

Peak LED Trip Point Calibration ................................... 29

External Monitor Input Level ......................................... 29

Cue Bus External Input Level ....................................... 29

VCA Distortion Null Adjustments ................................... 29

Output and Meter Board - 5 Pin ............................................. 30

Output and Meter Board - RJ-45 ........................................... 31

Auxiliary Control Relay Wiring ............................................... 32

Talkback Wiring ...................................................................... 33

Interface Options and Accessories ...............................................34

5.1 Overview ................................................................................ 34

Page 3

Radio Systems Millenium-H Hybrid Console

Illus. E-1

Illus. E-2

Illus. E-3

Illus. E-4

Illus. E-5

Illus. E-6

Illus. E-7

Illus. E-8

Enhanced Remote Interface Card ......................................... 35

Selector Logic Card ............................................................... 36

Four Source Router Card ...................................................... 37

DA-Mixer Card ....................................................................... 38

DA-Mixer Programming Examples ........................................ 39

Intercom Card Wiring ............................................................. 40

Intercom Card Speaker & Console Interconnection .............. 41

Dual A to D Converter Option Card ........................................ 42

5.2 Intercom Card Overview ........................................................ 43

5.2.1 Operation ....................................................................... 43

5.2.2

5.2.2.1

5.2.2.2

5.2.2.3

5.2.2.4

5.2.2.5

Installation and Wiring ................................................... 43

Control Wiring ................................................................ 43

Intercom card audio wiring............................................. 43

Console internal wiring .................................................. 43

Table-top speaker wiring ................................................ 43

Console interconnection ................................................ 43

5.2.3 Calibration ...................................................................... 44

Maintenance and Troubleshooting ...............................................45

6.1 Overview ................................................................................ 45

6.2

6.3

6.4

6.5

6.6

6.6.1

Power Supply ........................................................................ 45

Six Channel Audio Board ...................................................... 45

Six Channel Control Board ................................................... 46

Output Board ........................................................................ 46

Changing VCAs ..................................................................... 46

Distortion Null Adjustment.............................................. 46

Theory of Operation ........................................................................48

7.3

7.3.1

7.3.2

7.4

7.4.1

7.4.2

7.5

7.5.1

7.5.2

7.6

7.7

7.1

7.1.1 Grounding

7.1.2

7.2

7.2.1

7.2.2

Power Supply Circuit Description ......................................... 48

Positive and Negative 7.5 volts ..................................... 48

Six Channel Control Board .................................................... 48

Brief Description ........................................................... 48

Detailed Description ...................................................... 48

Six Channel Audio Board Circuit Description ........................ 49

Brief Description ............................................................ 49

Detailed Description ...................................................... 49

Monitor Control Board ........................................................... 50

Brief Description ........................................................... 50

Detailed Description....................................................... 50

Output Board Circuit Description ........................................... 51

Brief Description ........................................................... 51

Detailed Description ...................................................... 51

RFI Suppression .................................................................... 52

Using Active Balanced Circuitry ............................................. 53

Schematics, Drawing and Parts Lists

Illustration Six Channel Control Board Schematic ................................ D-1

Page 4

Radio Systems Millenium-H Hybrid Console

Illustration

Illustration

List

Illustration

Illustration

Illustration

List

Illustration

Illustration

List

Illustration

Illustration

List

Illustration

Illustration

Illustration

List

Illustration

Illustration

List

Six Channel Control Board Parts Layout Top ...................... D-2

Six Channel Control Board Parts Layout Bottom ................. D-3

Six Channel Control Board Parts List ............................... D-4/5

Monitor Board Schematic .................................................... D-6

Monitor Board Parts Layout Top .......................................... D-7

Monitor Board Parts Layout Bottom ..................................... D-8

Monitor Board Parts List ...................................................... D-9

CT-2002 Clock/Timer Schematic ...................................D-10/11

CT-2002 Clock/Timer Parts Layout .................................... D-12

CT-2002 Clock/Timer Parts List ............................... D-13/14/15

Six Channel Audio Board Schematic ........ D-16/17/18/19/20/21

Six Channel Audio Board Parts Layout .............................. D-22

Six Channel Audio Board Parts List .............................. D-23/24

Power Supply Interface Board Schematic ......................... D-25

Power Supply Interface Board Parts Layout Top ............... D-26

Power Supply Interface Board Parts Layout Bottom ......... D-27

Power Supply Interface Board Parts List ........................... D-28

Output Board Schematic .......................................... D-29/30/31

Output Board Parts Layout ................................................ D-32

Output Board Parts List ........................................... D-33/34/35

Millenium Console Specifications .................................................54

Millenium Consoles - Warranty and Repair Policies ....................55

Warranty ................................................................................ 55

Repair Policy .......................................................................... 55

Return Instructions ................................................................. 55

Page 5

Radio Systems Millenium-H Hybrid Console

Installation/Wiring/Operation

Page 6

1.1 Console Placement

Because neither ventilation, or rear access is required, the console may be mounted on any sturdy surface. Opening the lid provides access to all electronics, internal controls and wiring points.

After placing the console, open the lid and mark the cable access slots on the chassis bottom on the table surface.

Remove the console and cut the slots with a saber saw. The console may then be permanently mounted with two #10 sheet metal screws inserted through the two holes provided in the front of the chassis’ bottom.

1.2 Opening the Console

A “T”-shaped lifter is provided by the factory to open the console.

This lifter can be inserted in any fader slot, angled and used to raise the lid. Once the lid is opened, the two hinges are pulled forward to lock the lid open.

To close the lid, push the hinges in to release the locks, while holding the lid up with the “T” lifter, and gently lower the console.

The external lifter discourages unauthorized access to console electronics.

1.3 Power Supply

1.3.1 Installation

All console operating voltages are provided by the external power supply which connects to the console via a multi conductor cable. A ten foot length is provided as standard equipment. Longer lengths, up to 20 feet, are available from the factory.

To install the cable, remove the top cover of the power supply and insert the end of the cable with the large solder lug through the rectangular cut out in the power supply back panel. Plug the connector into the circuit board and secure the solder lug to the ground stud provided on the inside rear panel. After replacing the top cover, the supply may be hung from the key-hold slots in the cover, placed on the shelf or the floor, or rack mounted with the optional rack adapter front panel.

To connect the console end of the power supply cable, pass the other end of the cable (with the smaller ground lug) through the rectangular hole on the center right-hand-side of the console base. Screw the ground lug under the mounting screw on the right front hand side of the Output Board. Plug the 10 position connector into J24 and the 4 position connector into J26(Ouput Board v.2: Plug the 10 position connector into J6 and the 4 position connector into J8).Take extreme care to plug these connectors in with the correct orientation - locking tab to loacking tab (with cables existing towards the right hand side) as it is possible to plug them in backwards.

A grounding stud is provided on the rear of the power supply. Console grounds reach a common point at the power supply. To minimize RFI and potential ground loop problems, the console should only be connected to station ground at this one ground stud.

In intense RF environments, or if you experience any RFI problems, consult RFI suppression in the Troubleshooting and

Theory of Operation Section for detailed information.

1.3.2 Configuration

The power supply houses a switch-mode module and an interface and indicator board. This provides 15 volts for audio circuitry and 7.5 for control circuits.

Front panel LED’s show the status of both 15 volt modules and the 7.5 voltages derived from the first module. Fuse holders are front panel mounted housing a 2 amp fuse for the first module and a one amp fuse for the second.

Radio Systems Millenium-H Hybrid Console

1.4 Wiring Access Layout

Page 7

1.4.1 Connectors

Millenium Hybrid Consoles can be ordered with RJ-45 female connectors, pinned out to the StudioHub+ standard, or with 5-pin removable barrier strip connectors (quick connector).

1.4.2 Inputs

All audio inputs and audio patch points wire to the Six Channel Audio Board(s) on the base of the console. One board is utilized for every 6 channel positions. Audio inputs are stereo and balanced. The left and right channels of one input are wired to a single connector. Interstage channel audio patch points are unbalanced. These loop-thru inputs and outputs for each channel are accessible on a single 5 pin quick connector. On RJ-45 version consoles only, there is also a 3-pin post-fader patch point.

Consult the Six Channel Audio Board Section of this manual for detailed information on input and patch point wiring and level attenuation.

1.4.3 Outputs

All program outputs are balanced and appear on connectors on the Output Board.

Also mounted on this board are connectors for external monitor inputs, monitor sends, talk back, timer reset, cue audio, and control sends.

Consult the Output Board Section of the manual for detailed information on output and control wiring and level calibrations.

1.4.4 Control

The front panel mounted Six Channel Control Board houses one 15 pin D connector for each remote channel control.

Consult the Six Channel Control Board Section of this manual for detailed information on control remote functions and programming options.

Consult the Interface Options and Accessories Section of this manual for detailed information on the optional interface card applications, wiring and function.

1.4.5 Wiring Quick Connectors (5-Pin Connector Console Version)

Audio input and output connections to the console are made via 5-pin connectors. These connectors may be unplugged from the circuit board to facilitate wiring or servicing.

StudioHub+ wiring harnesses are available from Radio Systems which bring all input and output connections to convenient connection blocks outside the console. Consult the factory for literature.

1.4.6 Wiring RJ-45 Connectors (RJ-45 Connector Console Version)

Use standard TIA 568B RJ-45 STP patch cords or 22 AWG shielded wire for audio connections. The cable should be stripped so that the insulation comes close to, but does not enter the connector.

StudioHub+ wiring harnesses are available from Radio Systems which bring all input and output connections to convenient connection blocks outside the console. Consult the factory for literature.

1.5 Operation

The Millenium Consoles have been designed to offer the greatest combination of user flexibility and operating ease. Ob viously, the console should be installed and operated in accordance with station format, personnel habits and engineering principles.

The following sections suggest some operational possibilities which were considered in the console design.

Radio Systems Millenium-H Hybrid Console Page 8

1.5.1 Input Assignment

Traditionally, commonly used inputs are assigned to input “A”. This gives the operator quick assurance of proper input selection.

1.5.2 Mic Use

Mic channels should always be activated with the slider down, and then potted up to avoid a sudden “room rush” of background sound.

Cue speaker muting is only provided when a mixing channel is turned “on”. Therefore, feedback can occur between the cue speaker or the monitor speakers (if cue monitoring is selected) and a mic input if the mic channel is placed in cue.

To avoid this possibility, remove the cue inhibit jumpers on the section of the Six Channel Control Board associated with the mic channel. This will prevent a mic channel from entering the cue mode and possibly cuing feedback. Consult the

Six Channel Control Board Section for details on programming information.

1.5.3 Cue Circuitry

Unless disallowed by jumper removal, all selected inputs maybe placed on the cue bus by depressing the cue button, located above the fader. Refer to Section 2.2 for additional information.

The cue signal is monitored by the cue speaker, and level adjusted by the front panel cue level control. The cue speaker is muted by any input that is turned “on” and that was pre-selected during installation to activate the Mute 1 control bus.

The internal cue speaker may be disconnected and a remote speaker connected in its place. Consult the Output Board

Section for detailed information on wiring.

In addition, the cue signal maybe selected for monitoring by the headphone or monitor amplifier select switches.

1.5.4 Output Routing

Each mixing channel can be routed to any combination of program (PGM), audition (AUD), and tel (TEL) mix buses.

The program and audition buses provide identical stereo performance allowing the audition output to be used as a back up to the program bus, as a separate program bus, or to preview or record material. The TEL bus is a monaural.

1.5.5 Mix-Minus

Talk show hybrid telephone patches frequently require a return feed to the caller that does not contain his own voice (mix minus). To accomplish this, the host should be routed to PGM and TEL and the caller to PGM only. The TEL bus should then be fed back to the telephone hybrid and program audio used to feed the air chain. To prevent feedback in this application, the studio monitor speakers should not be used.

A “fold back” feed can also be created by feeding all microphone inputs into the PGM bus, and feeding all other inputs to both PGM and AUD mix buses. Switch the monitor speakers to AUD and feed the air chain with PGM. In this application the mic inputs need not mute the monitor speakers, as no feedback will result.

1.5.6 Monitor Amplifier Input Select

The monitor input select switches on the right hand side of the console allow monitoring of PGM, AUD, TEL, cue and four external stereo inputs which are common to the monitor and headphone circuitry. All monitor outputs follow these switches. Level adjustment for the control room monitor output is provided on the front panel. In addition, the control room monitor output is dimmed to an level which has been preset by a trimmer on the Output Board by the Mute 1 control bus. A studio monitor output which is muted by the Mute 2 bus, and an unmuted monitor output is also provided. In addition, a prefader, unmuted monitor output is available.

1.5.7 Headphone Amplifier Input Select

The headphone input select switches on the right hand side of the console allow monitoring of program, audition, tel, cue and four external stereo inputs which are common to the headphone and monitor circuitry. All headphone outputs follow these switches. Level adjustment and connection for the operator’s headphones are provided on the front panel. In addition, a pre-fader headphone output is available for driving an external headphone amplifier.

Radio Systems Millenium-H Hybrid Console Page 9

1.5.8 VU Meter Selection (6 Channel Consoles Only)

The six channel console provides only three meters. One meter is dedicated to the TEL output, while the remaining two are selected by a front panel switch to display either PGM or AUD outputs. The peak LEDs in the meters also follow the

VU meter select switch.

1.5.9 Remote Control

The Millenium Consoles provide extensive remote control using a 15-pin D connector located at each mixing channel.

Each channel has the capability to remote start almost any source. In addition, each channel provides inputs for remote control of channel on/off and ready lamp illumination.

Sophisticated control interface is also accommodated with the use of the optional interface card (RS Part# 11022). See

Section 2.2.9 and Illustration E-1 for additional information.

1.5.10 Eight Position Switcher

Eight accessory switches are provided on the right-hand side of the console for user control of external equipment or the optional Four Source Expander or Intercom Accessory boards. These switches and their associated LED indicators can be wired directly to external equipment using two 15-pin D connectors mounted on the underside of the monitor control board. Consult Illustration B-3 for more details.

Radio Systems Millenium-H Hybrid Console

Illustration A-1

CT-2002 Console Clock/Timer

Page 10

Radio Systems Millenium-H Hybrid Console

Illustration A-2

CT-2002 Console Clock/Timer Wiring Diagram

Page 11

Radio Systems Millenium-H Hybrid Console

Radio Systems Millenium-H Hybrid C o n s o l e

Illustration A-3

Illustration A-3

LED Meter Board with Talkback Microphone

Radio Systems p/n 16636

Word Clock

J2

(To external Word Clock Output

BNC connector)

{

Install JU2 & JU3 for 32 Khz

JU1- Install for PPM / Remove for VU

-50

-9

-21

-23

-25

-27

-13

-15

-17

-19

-33

-45

-57

Page 12

Meter Power

+15v G

MicPower

+ 1 5 v G 1 5 v

Mic Output

+ G

-

Component Side

-45

-57

-33

-13

-15

-17

-19

-23

-25

-27

-21

-50

-9

Display Side

Radio Systems Millenium-H Hybrid Console

Six Channel Control Board

Page 13

2.1 Overview

One Six Channel Control Board is provided for every six input channels. This card sends DC control voltages to the Six

Channel Audio Board that:

Select A/B Inputs

Set output bus and cue routing

Set input level attenuation

Activate muting buses

Activate timer reset bus

This information is conveyed by a 16 conductor ribbon cables; one cable for every mixing channel.

Eighteen programming straps also reside on this board at each channel position and are used to set all unique channel and input board functions.

The board also includes a 15-pin remote control connector for each channel providing user access to all remote and channel functions.

Programming options available for each channel include:

Remote Control Options – by channel

Remote Control Options – by input

Muting Buses – by input

Timer Reset – by input

Cue Options- by channel

Cue Options – by input

Off (ready) lamp control operations – by input

2.2 Function Programming

2.2.1 Channel Power-Up Mode

It is sometimes desirable that certain channels ‘power up” in pre-set logic states. A common application for this feature is that channel(s) associated with an automation system intended to run unattended, be set to power up with the channel

ON, and the correct input (e.g. A) and output bus (e.g. PGM) selected.

To set a channel to always power up in a specific pre-set mode - take the following steps:

1. Set the channel’s buttons in the desired INPUT, OUTPUT(S) and CUE modes

2. (For power up in the ON mode) - press and hold the ON switch for 5 seconds until the ON lamp blinks

3. (For power up in the OFF mode) - press and hold the OFF switch for 5 seconds until the OFF lamp blinks

4. Repeat this procedure on each channel where a special power-up mode is desired

5. Whenever the console power is re-cycled for any reason, these/this channel will power-up in its pre-set mode

Notes:

ON or OFF lamps blink and then extinguish to indicate that the programming is stored

When programming the ON function, the OFF lamp may also blink depending on the remote control wiring/configuration of the OFF lamp)

The default power-up mode is Input A / PGM / no CUE / Channel OFF

Fader position will not be memorized of changed, so faders must be left at standard operating level

It is still highly recommended that a good quality UPS of at least 1.5 KVA be installed prior to the console power supply to provide temporary back-up power as well as power line filtering

Radio Systems Millenium-H Hybrid Console Page 14

2.2.2 Remote Control Options – by Channel

Fader Start – The channel may be programmed to automatically turn on whenever the fader is brought out of the detent

(cue) position. All programmed channel on functions (e.g. remote starts or timer reset) will activate at this time.

Note that a special order fader with detent (RS Part # P&G) is required for this option.

Insert jumper

A

to activate.

Default is no jumper; no fader start

2.2.3 Remote Control Options – by Input

2.2.3.1 Pulse/Holding Remote Control

Insertion of these jumpers determine whether the remote control pins on the remote control connector pulse to ground when the channel is turned on, or remain at ground potential for the duration of the channel ON state.

Pulse mode is generally used for cart machine and CD player control. Holding mode is generally selected for reel-toreel or turntable control.

Insert jumper

H

for input A – holding mode.

Default is no jumper; pulse mode.

Insert jumper

C

for input B – holding mode.

Default is no jumper; pulse mode.

2.2.3.2 Send Through of Remote On/Off Commands

Installation of these optional jumpers will cause channel on/off commands which were initiated remotely (i.e. sent to the channel via remote connector pins 1, 2, 5, or 12) to, in turn, create remote on/off output pulses (i.e. send remote control commands to external equipment via remote connector pins 3, 4, 7, or 11). Normally, you would not want these remote channel commands to be “sent through”, thereby creating a new command and potentially retriggering the remote device via a false echo of the original command. This situation would apply when a remote device is wired to both control and be controlled by an input channel; typically the case with a digital storage system that is wired to be both remotely started by the channel and turn off the console channel at the end of the audio cut.

Insert jumper

D

to enable send through in input A.

Default is no jumper; no send through.

Insert jumper

B

to enable send through in input B.

Default is no jumper; no send through.

2.2.4 Muting Buses

Two muting buses, referred to as mute 1 and mute 2, perform the following functions:

Mute Bus 1 – mutes the cue speaker, dims monitor send #1, activates mute 1 send on Output Board connector J7.

Mute Bus 2 – mutes monitor send #2, activates mute 2 send on Output Board connector J7.

Insert jumper

T

for input A to mute bus 1.

Default is no jumper; no mute.

Insert jumper

P

for input A to mute bus 2.

Default is no jumper; no mute

Insert jumper

V

for input B to mute bus 1.

Default is no jumper; no mute

Insert jumper

R

for input B to mute bus 2.

Default is no jumper; no mute

See Illustration B-1, Pg16

Radio Systems Millenium-H Hybrid Console Page 15

2.2.5 Timer Reset

The insertion of timer reset jumpers programs operation of the timer reset bus in conjunction with a selected input. The bus will go low momentarily (100 ms) when the mixing channel is first placed into the “On” mode. Depressing the “On” button after the channel is already turned “On”, will result in another pulse of the bus.

Insert jumper

S

for input A to reset the timer.

Default is no jumper; no timer reset.

Insert jumper

U

for input B to reset the timer.

Default is no jumper; no timer reset.

2.2.6 Cue Options by Channel

2.2.6.1 Cue on Fader Detent

Enable this function to allow the operator to put the channel in cue by dropping the fader into the detent (fully down) position, Note that a special-order fader with detent (RS Part # P&G) is required for this option.

Insert jumper

K

to enable cue on detent

Default is no jumper; no cue on detent

2.2.6.2 Auto Cue

Cue follows channel On/Off mode with this option enabled. The channel will automatically go into cue whenever the channel is turned off. With this function enabled, cue still can be activated via the cue switch or fader detent.

Insert jumper

J

to enable auto cue

Default is no jumper insterted; no auto cue

2.2.6.3 Cue Defeat on Channel ON

Insert jumper

F

to cause the Cue Mode to be turned OFF whenever the channel is cycled from OFF to ON. Cue must then be manually re-selected when the channel is turned OFF.

2.2.6.4 Cue Exclusive

Insert jumper

N

to cause any mix bus (which is selected) to automatically mute when cue function is engaged.

2.2.7 Cue Options by Input

Install these jumpers to disallow the channel from going into cue when a particular input is selected. This option is normally utilized for a control room mic input to avoid feedback from the cue speaker. When this option is enabled, the cue button is automatically reprogrammed to act as a cough button (hold-to-mute) for that input.

Install jumper

M

for no cue on input A.

Default is no jumper; cue in input A.

Install jumper

L

for no cue on input B.

Default is no jumper; cue in input B.

See Illustration B-1, Pg16

Radio Systems Millenium-H Hybrid Console Page 16

2.2.8 Off (Ready) Lamp Options

These jumpers allow for local (console) or remote (source) control of the channel off (ready) lamp via the remote control connector.

Install jumper

X

between the left and middle header pins for input A local Off lamp control.

Install jumper

X

between the middle and right header pins for input A remote Off lamp control.

Default is left and middle pins jumpered; local off lamp control.

Install jumper

W

between the left and middle header pins for input B local Off lamp control.

Install jumper

W

between the middle and right header pins for input B remote Off lamp control.

Default is left and middle pins jumpered; local Off lamp control.

2.2.9 Remote Control Connector

A 15-pin D connector is provided on the Six Channel Control Board for each channel to access all remote functions.

All control (input) functions are activated via a momentary pull-to-ground, except the “cough” function, which must be held to +15V. All control output functions are open lines which go low when the function is activated. Lamp drivers are current-sinking inputs.

Two modes of remote control functionality are available via recently supplied PROMS. These modes are selected via the installation of jumper

E

. In the default mode (

E

not installed,) remote control cue for IFB applications is provided. With jumper

E

installed, “Classic” remote control functionality, identical to previous PROM versions is provided.

Refer to Illustration B-2 and B-3 for a pin-by-pin reference descriptions and wiring diagram.

2.2.10 Optional Remote Board

Radio Systems’ optional Remote Board (RS Part # REMOTE) connects to the remote control connector and provides the user with programmable relay interface for channel remote control outputs and opto-isolated input to channel on/off and off lamp functions. Consult the interface option section for more details and pin-out and wiring diagrams.

2.2.11 Monitor Control Board

One monitor card (RS Part #10887) is installed on the right-hand side of the console front panel. It provides all monitor and clock switching and logic functions.

The monitor board also provides eight uncommitted, illuminated momentary switches for remote control of source equipment. Access to these switch and LED connections is made with two 15-pin D connectors on the underside of the board. Refer to Illustration B-3 for pin-out and wiring diagrams.

Radio Systems offers an optional logic card (RS Part # LOGIC) which adds push-on/push-off or interlocked switch functions for these switches. This card also is used to interface the switches to the optional four source expander (RS Part

# ROUTER) or Intercom card (RS Part #INTERCOM). Consult the interface options section of this manual for more information.

See Illustration B-1, Pg16

Radio Systems Millenium-H Hybrid Console Page 17

Illustration B-1

Six Channel Control Board Jumper Settings for Millenium Hybrid Consoles

Part # 18516

AA

Y

1 2

W

X

1 2

1 2

Z

1 2

H

J

K

L

M

N

A

B

C

D

E

F

P

R

S

T

U

V

Board

Location*

A

Channel Logic Jumpers

Install for fader start (special order fader required)

B

C

D

E

R

Install for remote B start and stop commands to control the remote outputs

Install for input B to hold and remove for input B to pulse the remote pulse/hold outputs

Install for remote A start and stop commands to control the remote pulse/hold outputs

Install for “classic” remote control protocols

F

H

J

L

M

Q

K

Q

Q

Q

Install to disengage cue when channel is turned on

Install for input A to hold and remove for input A to pulse the remote pulse/hold outputs

Install for cue to follow the on/off mode for “Auto-Cue”

Install for cue on fader detect (special order fader required)

Install for no cue in input B (cue switch is now cough for input B)

Install for no cue in input A (cue switch is now cough for input A)

N

P

R

S

T

U

V

W

X

Y

Z

Install for “Cue Exclusive” (turn off mix buses when in cue mode)

Install for Input A mute 2

Install for input B mute 2

Install for timer reset with input A

Install for input A mute 1

Install for timer reset with input B

Install for input B mute 1

Input B stop lamp local/remote jumper. Jump pin 2 to center pin for local console lamp control

(Jump pin 1 and center pin for remote lamp control)

Input A stop lamp local/remote jumper. Jump pin 2 to center pin for local console lamp control

(Jump pin 1 and center pin for remote lamp control)

Jumper must be installed between pin 2 and center pin for cue bus lamp normal operation

Jumper must be installed between pin 1 and center pin for hybrid console operation

Notes:

Items in bold are factory default jumper settings.

See following page for remote control connector pin-outs.

Consult section 2.2 for a detailed explanation of control programming and functions.

Q

Cue Options - Consult manual section 2.2.6 and 2.2.7 for various cue modes and operational descriptions.

R Remote Options - See illustration B-2 and B-3 for remote control options, settings and wiring.

Radio Systems Millenium-H Hybrid Console Page 18

Illustration B-2

Remote Control Wiring - with remote cue available for IFB

(for console models shipped after 10/15/10 with control prom PN: 18406)

Note: Jumper E on Input Control Board must be removed to initiate this mode of remote control (this is factory default setting)

Remote Control On/Off Inputs to the Console Channel

(with input A or B selected)

(with input A or B selected)

Cue On Control

Memory Recall Control **

Remote Control Start/Stop Outputs from the Console Channel

Channel Stop Signal - Input A*

Channel Stop Signal - Input B*

Channel Start Signal - Input B*

Channel Start Signal - Input A*

Input to engage channel memory recall **

Input to engage the cue mode when either input A or B is selected

Input to turn the console channel

off

when either input A or B is selected

Input to turn the console channel

on

when either input A or B is selected

* These functions require programming on the input control card. See preceding page for details.

** “Memory Recall” engages the channel powerup of stored channel functions. See manual section 2.2.1 for details.

Radio Systems Millenium-H Hybrid Console

Illustration B-3

Remote Control Wiring

- “Classic” Version

(for console models shipped after 10/15/10 with control prom PN: 18406)

Note: Jumper JU213 on Input Control Board must be installed to initiate this mode of remote control.

Remote Control On/Off Inputs to the Console Channel

Page 19

Remote Control Start/Stop Outputs from the Console Channel

Channel Stop Signal - Input A*

Channel Stop Signal - Input B*

Channel Start Signal - Input B*

Channel Start Signal - Input A*

Radio Systems Millenium-H Hybrid Console

Illustration B-4

Monitor Board Wiring

LED 4

Console Side

In-Console

Resistor Socket

(for 15V operation)

Selector Connector

(1 of 2)

Right connector for switches & LEDs 1-4

Left connector for

Switches & LEDs 5-8

LED 3

LED 2

LED 1

Switch Common

Switch 1

Switch 2

Switch 3

Switch 4

6

7

8

3

4

1

2

5

13

14

15

11

12

9

10

Remote Wiring Side

LED 4 Control

LED 3 Control

LED 2 Control

LED 1 Control

Page 20

Use console internal 15 Volt power supply or any external 5 to 15 Volt supply. In-console resistor socket must be changed for 5V LED drive.

(Mfg. part#761-3-R680, R.S. part#11157) (Mfg. part#761-3-R680, R.S. part#11157)

Function Descriptions

12

13

14

15

8

9

10

11

4

5

6

7

Pin #

1

2

3

Function

LED 4 Cathode Lead

LED 3 Cathode Lead

LED 2 Cathode Lead

LED 1 Cathode Lead

Switch Common Lead

Switch 2 N.O. Lead

Switch 4 N.O. Lead

+15 Volts DC

LED 4 Anode Lead

LED 3 Anode Lead

LED 2 Anode Lead

LED 1 Anode Lead

Switch 1 N.O. Lead

Switch 3 N.O. Lead

Ground

Notes

Install the optional Radio Systems logic card (part number 11027) to add push-on/push-off, exclusive, and lamp follow functions to the selector buttons.

LEDs are factory set for 15 Volt operation. To change to 5 Volt operation, exchange the resistor dip package located just under the two selector "D" connectors. For 5 Volt operation, install the 330ohm package included in the accessories package (Mfg. part#761-3-R220, R.S. part#11158). For 15 Volt operation, re-install the 680 ohm resistor package (Mfg. part#761-3-R680, R.S. part#11157).

Radio Systems Millenium-H Hybrid Console

Six Channel Audio Board

Page 21

3.1 Input Connectors

Illustration C-1 shows the location of all board input and patch point connectors as well as the pin-outs of the connectors for 5-pin version consoles. Illustration C-2 shows the location of all board input and patch point connectors as well as the pin-outs of the connectors for RJ-45 version consoles.

3.1.1 Input Wiring

Every input, from mic thru high level wires to the input connectors. One connector is provided for each channel “A” input and another is provided for each “B” input. Each connector handles left and right balanced audio from the source equipment.

5-pin consoles provide one ground terminal on each connector for the audio inputs. RJ-45 consoles provide a jumper behind the input connector to select grounding options. Grounds should be connected at either the console or equipment and not at both ends, to avoid ground loops. The console is usually used as the grounding reference point.

3.1.2 Unbalanced Audio

If an unbalanced audio source is to be connected to the console, single conductor shielded cable or two conductor shielded cable with a foil shield around each conductor should be used. The audio should be connected to the + input, while the shield should be connected to both the - input and ground. In this case, the shield is connected at both ends of the cable.

3.1.3 Mono Inputs

For consoles produced after September, 2008: Inputs can be made mono by installing the mono/stereo select jumpers as shown in Illustration C-1 (5-pin version console) or Illustration C-2 (RJ-45 version console).

For 5-pin version consoles produced prior to September, 2008: If one input (A or B), rather than an entire channel is to be fed from a mono source, connect the Left+ input to the Right+ input and connect the Left- input to the Right- input. If an entire channel is dedicated to mono sources (both A and B inputs) wire the input signal only to the Left Input and refer to illustration C-1 for proper jumper placement on header J7.

3.2 Input Gain

3.2.1 Channel Sensitivity

The gain of an entire channel or the gain of an individual input can be changed to accommodate any mix of different input source levels.

Overall channel gain is changed by installing jumpers into gain header J5 for the left channel and gain header J6 for the right channel. The gain jumpers allow selection of four different overall gain range sensitivities; line (0 to +8 dBv), and mic (-55 to -35 dBv), low (-20 to -10 dBv), and consumer (-10 to 0 dBv). Mic level sensitivity also requires the use of a mic level attenuator dip carrier, as described in the next section on input sensitivity.

Changing gain headers effects the gain of the entire channel (both inputs). Refer to illustration C-3 for channel sensitivity strap programming.

3.2.2 Input Sensitivity

Individual input gains are changed by plugging any of 5 standard input attenuator DIP (IAD) carriers into the channel A or

B input attenuator DIP sockets. The IAD’s are used to reduce the sensitivity of an input after it has been increased via the channel gain straps. This allows the use of sources of radically different output levels on the A and B inputs of the same channel. An example where an IAD would be utilized, would be to allow a line level source to be connected to a

“B” input after the channel sensitivity had raised to consumer level to accommodate a CD player on an “A” input.

In other words, channel gain straps are set to increase channel sensitivity to accommodate the channel’s lowest level source (such as a mic), and IAD’s are used to restore the original sensitivity, or any lower sensitivity for the other chan-

Radio Systems Millenium-H Hybrid Console Page 22

3.3

nel input. The only exception is that a special IAD (factory provided as part # “AT-M”) is utilized to increase the input sensitivity any time a mic is used.

Five standard IAD’s are provided by the factory. These include the one for use with mics, and four standard values of input attenuation. Illustration C-3 charts which IAD should be utilized under different source level combination situations, and shows the parts values any construction of the IAD’s.

Patch Point Connections

3.3.1 Pre-Fader, Pre-On/Off Patch Point

An unbalanced pre-fader stereo loop-thru is provided at the insert point on header J8. The nominal level at this point is typically between -6dBv and +ldBv. The Send output impedance is 400 ohms, and the Return input impedance is 20K ohms.

The patch point maybe used two different ways. The first application is to insert a piece of processing gear into the audio chain. In this instance, the patch point bypass jumpers, which are installed on header J7 (positions A and C) must be removed.

Input and output loop-thru connections are made using a 5 pin quick connector installed at the patch point header J8.

Refer to Illustration C-1 (for 5-pin version consoles) or Illustration C-2 (for RJ-45 version consoles) for pin-outs.

Single conductor shielded cable, or two conductor shielded cable with a foil shield around each conductor should be used for patch point connections. The shield should be tied to ground at both the console and at the external gear. In addition the external gear should:

1. operate at unity gain

2. have a bridging input and present a load of 2K ohms or greater to the output of the input amplifier

3. have an low output impedance of lK ohms or less

If mono operation is desired, wire the output from the external gear to both the left and right return connector positions.

In this application, the output from external gear will see a 10K load from the console.

The second application of the patch point is for a parallel feed off of the input amplifier. An example would be to feed the microphone channel into the talk back circuitry. In this application, jumpers A and C should be in place on header J7 and all wiring to J8 should be made to pins 2 (left), 4 (right), and 3 (ground).

The optional DA card can be used to balance and isolate the patch point sends and receivers in either the loop-thru or parallel feed applications. Consult the Interface Options and Accessories Section of the manual for more information.

3.3.2 Post- Fader, Pre-On/Off Patch Point

For consoles produced after September, 2008, there also is an unbalanced post-fader, pre-on/off audio patch point connector available. The mating connector for this patch point is not provided in the console startup kit. Contact the factory for availability and pricing. A ten foot connectorized pigtail is available from the factory to utilize this patch point; the P/N is 16867.

Radio Systems Millenium-H Hybrid Console

Jumper Programming

Input or Chassis

Ground Select

Illustration C-1

Six Channel Audio Board - 5 Pin

SIX CHANNEL INPUT BOARD with 5 Pin CONNECTORS

1

IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH

Input Ground Chassis Ground

(Default)

2

3

4

5

Mono/Stereo Select

Stereo Input (Default)

Mono Input

Note: in mono mode left channel feeds both left & right.

Channels Sensitivity Select

6

C B A

7

C B A C B A C B A C B A C B A C B A C B A C B A C B A C B A C B A

Page 23

10

8

9

8

11

12

13

Loop Thru Bypass and Mono Select

No pins strapped

Loop-Thru

Connector in Circuit

Position A and C strapped

(Pins 1/2 & 4/5 strapped)

Loop-Thru

Connector in Bypass

Position B and C strapped

(Pins 2/3 & 4/5 strapped)

Loop-Thru Connector Bypassed and A & B Inputs in Mono

14

17

15

Input

Connectors

(Stereo balanced)

Pre Fader Audio

Loop-Thru Connectors

(Stereo unbalanced)

Post Fader Audio

Output Connectors

(Stereo unbalanced)

2

5 R+ In

4 R- In

3 Ground

2 L- In

1 L+ In

1 L In

2 L Out

3 Ground

4 R Out

5 R In

9

1 L Out

2 Ground

3 R Out

12

16

1. Input or Chassis Ground Select

2. Input Connector

3. Mono/Stereo Select

4. Input B Attenuator Dip

5. Input A Attenuator Dip

6. Right Channel Sensitivity Select

7. Left Channel Sensitivity Select

8. Pre-Fader Audio Loop-Thru Bypass Select

9. Pre-Fader Audio Loop-Thru Connector

10. Aux. Power Supply Output

11. Power Supply Input

12. Post Fader Audio Patch Point Connector

13. Mixer Control Cable DIP Socket

14. Mix Buses - Loop Out

15. Audio Ground - Loop Out

16. Audio Ground - Loop In

17. Mix Buses - Loop In

Radio Systems Millenium-H Hybrid Console

Illustration C-2

Six Channel Audio Board - RJ-45

SIX CHANNEL INPUT BOARD with RJ-45 CONNECTORS

Jumper Programming

Input or Chassis

Ground Select

1

IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH IN CH

Input Ground Chassis Ground

(Default)

2 INPUT

1B

3

INPUT

1A

INPUT

2B

INPUT

2A

INPUT

3B

INPUT

3A

INPUT

4B

INPUT

4A

INPUT

5B

INPUT

5A

INPUT

6B

INPUT

6A

4

5

Mono/Stereo Select

Stereo Input (Default)

Mono Input

6

C B A

7

C B A C B A C B A C B A C B A C B A C B A C B A C B A C B A C B A

Page 24

Channels Sensitivity Select

10

9

8

11

12

13

Loop Thru Bypass and Mono Select

No pins strapped

Loop-Thru

Connector in Circuit

Position A and C strapped

(Pins 1/2 & 4/5 strapped)

Loop-Thru

Connector in Bypass

Position B and C strapped

(Pins 2/3 & 4/5 strapped)

Loop-Thru Connector Bypassed and A & B Inputs in Mono

14

17

15 16

Input

Connectors

(Stereo balanced)

Pre Fader Audio

Loop-Thru Connectors

(Stereo unbalanced)

Post Fader Audio

Output Connectors

(Stereo unbalanced)

1 L+ In

2 L- In

3 R+ In

6 R- In

2

1 L In

2 L Out

3 Ground

4 R Out

5 R In

9

12

1 L Out

2 Ground

3 R Out

1. Input or Chassis Ground Select

2. Input Connector

3. Mono/Stereo Select

4. Input B Attenuator Dip

5. Input A Attenuator Dip

6. Right Channel Sensitivity Select

7. Left Channel Sensitivity Select

8. Pre-Fader Audio Loop-Thru Bypass Select

9. Pre-Fader Audio Loop-Thru Connector

10. Aux. Power Supply Output

11. Power Supply Input

12. Post Fader Audio Patch Point Connector

13. Mixer Control Cable DIP Socket

14. Mix Buses - Loop Out

15. Audio Ground - Loop Out

16. Audio Ground - Loop In

17. Mix Buses - Loop In

Radio Systems Millenium-H Hybrid Console

Illustration C-3

Input Attenuator (IAD) Programming

Page 25

+

Radio Systems Millenium-H Hybrid Console Page 26

Output Board

4.1 Overview

This circuit board provides the following console functions:

Line output amplification

Cue amplification

Headphone amplification

External Inputs

Monitor sends

Meter and peak LED functions

Level sets for all functions

Muting and timer reset functions

Power supply interface

Talk back circuitry

Illustration O-1 provides a complete layout of all connectors, level set locations, and all user connector pin-outs for the

5-pin version console. Illustration O-2 has the same information for the RJ-45 version console

4.2 Audio Circuitry

4.2.1 Program and Audition Outputs

The program and audition outputs provide identical stereo performance, are active balanced, and factory calibrated, with a 600 ohm load, to provide +4dBm when the front panel VU meters read “0” VU. This will provide in excess of 20dB of headroom. Adjustments for output levels, meter calibrates, and peak LED trip points are provided on the Output Board, so that other output levels maybe set.

The outputs will drive a 600 ohm load or higher. The outputs connectors are mounted on connectors J30 (PGM), and

J29 (AUD), located on the Output Board.

It is recommended that two conductor shielded cable, or two pair shielded cable be used in wiring all balanced audio inputs to the console. Use STP (shielded twisted pair) patch cords when wiring the RJ-45 version. To minimize RF interference and ground loops, the shields should be tied to ground only at one end of the cable.

If an unbalanced console output is required, single conductor shielded cable or two conductor shielded cable with a foil shield around each conductor should be used. The audio should be taken from the + Output terminal, while the shield should be connected to Ground. In this case, the shield is connected at both ends of the cable. There should be no connections to the - Output. In this configuration, the console output will provide -2dBm into a 600 ohm load when the front panel VU meters read “0” VU.

4.2.2 TEL (Telephone) Output

The mono TEL Output is located on connector J33 on the output board.

The two TEL Outputs provided are in parallel, from the same amplifier. The combined load on the amplifier from both mono sends should be no less than 600 ohms.

In other aspects, the performance and connections to the TEL Output are identical to the PGM and AUD outputs.

4.2.3 External Monitor and Headphone Inputs

Four balanced, stereo, high impedance (4.7K ohm) inputs are provided which feed both the headphone and the monitor amplifiers. These inputs are located on connectors J19 (EXT IN 1), J20 (EXT IN 2), J25 (EXT IN 3), and J26 (EXT IN 4) on the Output Board.

Two conductor shielded cable with a foil shield around each conductor or STP RJ-45 patch cords should be used.

Radio Systems Millenium-H Hybrid Console Page 27

These inputs are intended mainly for air signal monitors, or for the connecting of other external monitor sources. Input level trims for each of these inputs are provided on the Output Board.

4.2.4 Headphone Outputs

Two headphone outputs are provided. The first is available at a stereo, quarter inch, phone jack which is factory mount ed to the front panel. This output is capable of driving 8 ohm or greater loads. D0 NOT USE MONO HEADPHONES.

The output signal is selected by the front panel headphone or monitor switches and level adjusted by the front panel headphone level control.

The second headphone output is stereo, balanced, and high level (lv RMS typical). It will drive loads of 2K ohms or greater. This output, which is intended for connection to an external headphone amplifier, follows the input selection switches but is not affected by the front panel headphone level control.

The connector for the headphone output is located on J11 on the output board.

Single conductor shielded cable or two conductor shielded cable with a foil shield around both conductors should be used.

4.2.5 Monitor Sends

Three stereo, balanced, high level (lv RMS typical) are provided. Each output will drive loads of 2K ohms or greater.

The outputs are Dimmed

Monitor (controlled by Mute 1), Muted Monitor (controlled by Mute 2), and Unmuted Monitor. All outputs follow the monitor selection switches but only the Dimmed Monitor is affected by the front panel monitor level control.

Connectors are located on the Output Board as follows.

Output Board Header Monitor Output

J12

J15

Dimmed Monitor (Mute 1)

Muted Monitor (Mute 2)

4.3

Single conductor shielded cable or two conductor shielded cable with a foil shield around both conductors, or STP RJ-45 patch cords, should be used.

All monitor outputs are intended to drive external monitor amplifiers. The Dimmed Output, controlled by Mute 1, (which also mutes the Cue speaker) is intended to feed the control room monitor amplifier where the console is located. When the Mute 1 bus is enabled, the output from the Dimmed Output will be reduced to a level set by VR13 located on the

Output Board. This level may be set to maximize (for full muting) or, alternatively, to a level just below the feedback threshold of the speakers.

The Muted Output is intended to feed any other room which that contains microphones connected to the console.

If it is desirable to feed all studios from a common amplifier, this amplifier should be fed from the Unmuted Monitor Out put. External relays driven by the muting contacts on header J7 could then be used to provide the necessary muting of the signal.

Control Wiring

4.3.1 Mute and Timer Reset Bus Connections

A five position quick-connect type barrier strip maybe mounted onto Mute/Timer header J7 on the Output Board to pro vide external mute and timer reset functions.

The bus outputs are open collector current sinking outputs, maximum +24vdc open circuit voltage, 80ma. If the buses are to drive external relays, install EMF suppression diodes across the relay coils. Do not exceed 150ma draw from the

+15v supply.

An interface relay is optionally available from Radio Systems. Illustration O-3 shows the wiring of this relay for external tally lights.

The Timer Reset Bus activates only during the first 100ms after a mixing channel, with its Timer Reset Jumper(s) in stalled, is placed in the “on” mode. Repeated depressing of the “on” switch after the mixing channel has turned “on” will result in additional pulses on the Timer Reset Bus.

Radio Systems Millenium-H Hybrid Console Page 28

4.4 Talk Back Connections

The talk back circuit has two sections, send and receive. The send section will output any signal applied to its input when the front panel Talk Back Switch is depressed. Return signals are applied to Cue Bus for operator monitoring. A trim pot on the Output Board is provided to set the external cue input level.

Talk back connections are made via 2 five position terminal strips, titled to Talk Back Output header J36 and Talk Back

Input header J37 on the Output Board.

Under normal applications, the output of the DJ mic is wired to the talk back send input terminal on J37. This is accomplished by connecting terminal 4 from patch point connector J8 of the DJ mic channel to terminal 1 of the Talk Back connector, and shorting terminal 2 (-) of the Talk Back Connector to terminal 3 (G).

Talk Back Output connector J36 also contains terminal 4 labeled “CTL”, which is pulled low whenever the front panel talk back switch is depressed. This is useful for switching external intercom or control circuits. It may also be used to remote trigger the console front panel Talk Back switch.

Illustration O-4 shows how this configuration would be used to wire two Millenium Consoles for talk back communication utilizing the DJ mic channel and cue circuit external inputs.

4.4.1 Intercom

The talk back system can also be used to communicate with up to four 2-way speakers in studios or control rooms that do not have Millenium Consoles. For this application, Radio Systems provides an Intercom card. Consult Illustration

E-6 in the Interface Options and Accessories section of this manual for detailed information.

4.5 Internal Adjustments and Input Level Calibration

The following level trim adjustments are available internal to the console.

1. mix bus output level

2. VU meter “0”

3. peak LED trip point

4. input level for external monitor inputs

5. input level for external cue bus input

6. distortion adjustment for all VCAs

The console was factory calibrated as follows, and will not require re-calibration unless alternate levels are desired.

1. With a +4dBv input and the fader set to the “0” position, the console will provide +4dBm output into a 600 ohm load.In addition, the VU meters will read 100% or 0 VU.

2. The peak LED trip point was calibrated to illuminate the LED when the peak output level reaches +2 dBv.

3. The external monitor inputs were calibrated to provide a lv RMS output with a lv RMS input.

4.5.1 Mix Bus Output Level Adjust

The console was calibrated at the factory for an output level of +4dBv, into 600 ohms, when the VU meters indicate “0”.

Perform the following steps on the Six Channel Audio Board to verify or change the calibration.

1. Select a high level input with no DIP component carrier inserted into attenuator headers J3 or J4. In addition, there should be no jumpers installed onto gain select headers J5 or J6.

2. Disconnect any inputs to the left or right A input.

3. Connect a l kHz, +4dBv, balanced sine signal to both the left and right A inputs.

Select input A, select all mix buses, turn the mixing channel “on”, and set the fader to “0”.

Perform the following steps on the Output Board.

1. If the console outputs will normally be terminated, place an equivalent termination onto each program and audition output. In addition, place a termination onto one of the Mono outputs.

2. Connect a high impedance, balanced voltmeter across the + and - Left program output.

3. Adjust the left channel output level trimmer so that the voltmeter indicates the desired output.

Radio Systems Millenium-H Hybrid Console Page 29

4. Move the voltmeter, and adjust the right program output, followed by the left audition output, right audition output and mono output.

4.5.2 VU Meter “0” Calibration

The console was calibrated at the factory for an output level of +4dBv, into 600 ohms, when the VU meters indicate “0”.

To calibrate the VU meter “0” indication:

1. Perform output level calibration as detailed previously.

2. Adjust the VU meter calibrate trimmers, located on the Output Board for a “0” reading on each meter.

Note: Six channel consoles share the same meters for program and audition monitoring. The front panel VU meter switch selects the signal to be displayed. Adjustment must be made with both switch settings.

4.5.3 Peak LED Trip Point Calibration

The console was calibrated at the factory for an output level of +4dBv, into 600 ohms, when the VU meters indicate “0”, and for a peak LED trip point of +2VU. To perform Peak LED Trip Point Calibration:

1. Perform output level calibration as detailed previously.

2. Perform VU meter “0” calibration as detailed previously.

3. Adjust oscillator to the desired peak LED trip point level (typically 0 to 3dB hotter).

4. Adjust the peak LED trip point trimmers to that the LEDs just illuminate.

Note: Six channel consoles share the same meters for program and audition monitoring. The front panel VU meter switch selects the signal to be displayed. Adjustment must be made with both switch settings.

4.5.4 External Monitor Input Level

There is a separate adjustment, located on the Output Board for each of the four stereo external inputs.

1. Connect a high impedance voltmeter to the unmuted monitor output.

2. Select a high level input, and reproduce the nominal level from a test tape, record or CD.

3. Turn the mixing channel “on”, select the program mix bus, and adjust the fader for “0” VU.

4. Depress the “program” monitor input switch.

5. Note the reading on the voltmeter.

6. Feed the nominal input level to any external input and select that monitor input switch.

7. Adjust the associated external input level trimmer until the voltmeter gives the same indication as in step 5.

8. Repeat steps 6 and 7 for all external inputs.

4.5.5 Cue Bus External Input Level

The level adjustment for the external cue bus input is located on the Output Board.

1. Connect a high impedance voltmeter to the external cue speaker terminals.

2. Select a high level input, and reproduce the nominal level from a test tape, record or CD.

3. Place the mixing channel into “cue”, and adjust the cue level control VR2 for normal listening level.

4. Note the reading on the voltmeter.

5. Feed the nominal input level into the external cue input.

6. Adjust the external cue input level trimmer until the voltmeter gives the same indication as in step 4.

4.5.6 VCA Distortion Null Adjustments

These adjustments are factory set and should only require adjusting if a VCA is replaced. Consult the Theory of Operation and Troubleshooting Section for detailed directions.

Radio Systems Millenium-H Hybrid Console

Illustration O-1

Output and Meter Board - 5 Pin

PGM.3 OUT PGM.2 OUT

EXT IN3 EXT IN1 MON MUTE2 PHONES

J33 J29

PGM.1 OUT

J25 J19 J15 J11

EXT IN4 EXT IN2 UNMUTED MON MON MUTE1

J7

TALKBACK OUT

METER CAL

PGM LEFT

METER CAL

PGM RIGHT

METER CAL AUD LEFT

METER CAL

AUD RIGHT

METER CAL

TEL

PGM.1 OUT LEFT

PGM.1 OUT RIGHT

PGM.2 OUT LEFT

PGM.2 OUT RIGHT

PGM.3 OUT MONO

PEAK LED SET PGM LEFT

PEAK LED SET PGM RIGHT

PEAK LED SET AUD LEFT

PEAK LED SET AUD RIGHT

PEAK LED SET TEL

MIX BUSES

AUDIO GROUND

TALKBACK IN/CUE

TALKBACK OUT

29

30

31

27

28

J36

J37

26

J38

U41

U42

U43

U36

U37

U38

U39

U40

J30

J34

U29

U30

U31

U32

U33

U34

U35

21

22

23

24

25

J26

IN-4

14

IN-3

11

J20

IN-2 IN-1

9 7

J16

RIGHT

U25 U24 U14 U9

15 12 10 8

IN-4 IN-3 IN-2 IN-1

LEFT

U10

J24

J12

U1

VR1

VR2

J1

U11

U2

U12

U13

U15

U16

U17

U18

U8 U9

U3

U5 U4

J10

J4

18

19

16

17

20

U26

U27

U28

13

U19

U20

U21

U22

U23

U6

W1

J6 J3

EXT INPUT LEVEL RIGHT

TO MONITOR SELECT BOARD

EXT INPUT LEVEL LEFT

TO METERS

TO TALKBACK CONTROL

TO CUE SPEAKER

TO HEADPHONE JACK

TO METER PEAK LEDS

TO EXT POWER SUPPLY

MUTE ONE DIMMING

TO MIX BOARDS

(POWER SUPPLY)

INSTALL FOR DIGITAL

REMOVE FOR ANALOG

TO EXT POWER SUPPLY

TO TIMER

Page 30

PGM.1 Output PGM.2 Output PGM.3 Outputs

DIGITAL

Access trim pots via silk-screen legend holes on the upper DIGITAL output board with the provided small screw driver.

Radio Systems Millenium-H Hybrid Console

Illustration O-2

Output and Meter Board - RJ-45

PGM.3 PGM.2 OUT EXT IN3 EXT IN1 MON MUTE2 PHONES

J33 J29 J25 J19 J15 J11

PGM.1 O

TALKBACK OUT

TALKBACK IN/CUE

TALKBACK OUT

METER CAL

METER CAL

METER CAL

AUD LEFT

METER CAL

AUD RIGHT

METER CAL

PGM.1 OUT LEFT

PGM.1 OUT RIGHT

PGM.2 OUT LEFT

PGM LEFT

PGM RIGHT

TEL

PGM.2 OUT RIGHT

PGM.3 OUT MONO

PEAK LED SET PGM LEFT

PEAK LED SET PGM RIGHT

PEAK LED SET AUD LEFT

PEAK LED SET AUD RIGHT

PEAK LED SET TEL

MIX BUSES

AUDIO GROUND

29

30

31

27

28

J36

J37

26

J38

J30

PGM.1 OUT

U29

J26 J20

J16 J12

EXT IN4 EXT IN2

IN 4 IN 3 IN 2

UNMUTED MON MON MUTE1

IN 1

14 11 9 7

RIGHT

U25

U24 U14 U9

15 12 10 8

IN 4 IN 3 IN 2 IN 1

LEFT

U1

VR1

U41

U42

U43

U36

U37

U38

U39

U40

J34

U30

U31

U32

U33

U34

U35

21

22

23

24

25

U10

VR2

J1

U11

U2

U12

J24

U13

U15

18

19

16

17

20

U26

U27

U28

13

U19

U20

U21

U22

U23

U16

U17

U18

U8 U9

U3

U5 U4

U6

J10

J4

W1

J6 J3

EXT INPUT LEVEL RIGHT

TO MONITOR SELECT BOARD

EXT INPUT LEVEL LEFT

TO METERS

TO TALKBACK CONTROL

TO CUE SPEAKER

TO HEADPHONE JACK

TO METER PEAK LEDS

TO EXT POWER SUPPL

MUTE ONE DIMMING

TO MIX BOARDS

POWER SUPPL

INSTALL FOR DIGITAL

REMOVE FOR ANALOG

TO EXT POWER SUPPL

TO TIMER

N A

DIGIT AL

PGM.2 O PGM.3 O

Page 31

DIGITAL

A

.

DIGITAL

Radio Systems Millenium-H Hybrid Console

Illustration O-3

Auxiliary Control Relay Wiring

Page 32

Connect the auxiliary relay (optional) (RS part #7699) to the console muting connector as shown below for mute-1 or mute-2 control of air lights and other outboard equipment.

A solid-state model of this relay (RS part #9375) is also available. Note that this part is only supplied in single pole

(SPST) configuration.

IMPORTANT NOTE: Take extreme care in wiring this relay to console connector J7 to ensure that no hazardous (110V) voltage is applied to pins on this connector.

4PDT

Radio Systems Millenium-H Hybrid Console

Illustration O-4

Talkback Wiring

Page 33

Radio Systems Millenium-H Hybrid Console

Interface Options and Accessories

Page 34

5.1 Overview

Several optional interface cards are available for the Millenium-A consoles. These options include:

Enhanced Remote Interface Card - This card connects any input channel’s 15-pin remote connector to provide relay and opto-isolated channel on/off and start/stop control.

Selector Logic Card - This card adds control logic to the 8 switches located to the right of the monitor section.

Four Source Router Card - This card routes 4 balanced stereo inputs to a single stereo output, which can then be routed to any standard console input. This option card

requires

the Selector Logic Card.

DA-Mixer Card - This card can be configured as two stereo 1x2 distribution amplifiers (eg. creating two PGM and AUD outputs), or as one stereo 1x4 distribution amplifier. Additionally, this card can be used to cre ate special mixes through the use of jumpers (eg. to create two mix-minuses for two single line telephone hybrids.

Intercom Card - This card enables talkback connection between multiple Millenium consoles and/or standalone intercom stations. See section 5.2 for detailed operational information.

Radio Systems Millenium-H Hybrid Console

Illustration E-1

Enhanced Remote Interface Card

Page 35

Description

This option card connects to any input channels’ 15-pin remote connector to provide relay and opto isolated channel on/off and start/stop control.

Jumpers are also provided to program various enhanced logic states.

Radio Systems Millenium-H Hybrid Console

Illustration E-2

Selector Logic Card

Page 36

Radio Systems Millenium-H Hybrid Console

Illustration E-3

Four Source Router Card

Page 37

Radio Systems Millenium-H Hybrid Console Page 38

Illustration E-4

DA-Mixer Card

Description

This optional, compact circuit card installs internally in Millenium consoles and may be connected to any console audio output(s) to distribute signal to multiple sources. The card features bridging inputs, low impedance outputs, and independent level adjusts for each output.

Installation

Use the plastic pins supplied to mount the circuit card on any free slot on the console inside rear wall. Supply DC power via the three wire cable from any auxiliary DC output connector on any lower console circuit board. The second DC connecter can be used to supply DC to power additional console option boards.

Applications

Use the DA/MIXER to distribute program or audition audio, create a mono program blend or a “mix-minus” feed of multiple signals. On analog Millenium consoles, the DA/MIXER may also be wired to loop through channel patch points (while leaving the loop-through jumpers in place) to “pick-off” and distribute individual channel audio. The DA/MIXER, used in this application, will balance and buffer the audio, maintaining the integrity of channel audio as it exits the console.

Each of the 8 outputs can be jumper programmed to deliver one or any mix of the 4 inputs. Thereby, multiple stereo outputs can be created by jumpering one input to multiple outputs. A mono mix of stereo inputs can be created by jumpering a signal output to multiple inputs. A “mix-minus” output can be created by jumpering one input to multiple outputs with additional inputs to the same outputs.

J2

+1 -1 G nd

-2 +2 +3 -3

G nd

-4 +4

J4

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

O ut A O ut B O ut C O ut D

1 2 3 4

O ut E

1 2 3 4

O ut F

1 2 3 4

O ut G

1 2 3 4

J6

+

Gn d

-

+/- 15vDC

+ Gn d -

J5

+/- 15vDC

Balanced bridging audio inputs 1-4

(2 stereo or 4 mono inputs)

Output channel jumper programming (see rear for programming examples)

DC power input connecter and bridging output connecter

(use either connector)

Pot A Pot B Pot C Pot D Pot E Pot F Pot G Pot H

Output level sets for outputs A-H

(factory default setting is unity gain)

Balanced low impedence audio outputs A-H

(4 stereo or 8 mono outputs)

A + A G nd

B - B + C + C G nd

D - D + E+ EG nd

F- F+ G + G - G nd

H - H +

When ordered with the console, this optional board will normally be factory installed and operational. For field installation, use the four plastic standoffs provided to mount the board on the inside rear console wall near the associated input or output. Connect the 3-pin power connector to any available 3-pin power port (+/-15v DC & Ground), on any lower console circuit board.

Radio Systems Millenium-H Hybrid Console

Illustration E-5

DA-Mixer Programming Examples

Various Output Configurations and Applications for the Radio Systems DAMIXER Console Option Card

1 2 3 4

Output Programming Jumpers JU1-JU8

(black over pin 1 indicates user installed jumper)

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

Out A Out B Out C Out D

Stereo DA - 1x4

Single stereo input (1/2) to 4 stereo outputs (A/B, C/D, E/F, G/H)

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

Out E

1 2 3 4

Out F Out G Out H

1 2 3 4 1 2 3 4 1 2 3 4

Out A Out B Out C Out D Out E

Dual Stereo DA - 2x2

Dual stereo input (1/2)+(3/4) each to 2 stereo outputs (A/B, C/D)+(E/F, G/H)

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

Out F Out G Out H

1 2 3 4 1 2 3 4 1 2 3 4

Out A Out B Out C

Mono 8 Output DA - 1x8

One mono input (1) to 8 mono outputs (A.B.C.D.E.F.G.H)

1 2 3 4 1 2 3 4 1 2 3 4 1

Out D

2 3 4

Out E

1 2 3 4

Out F Out G Out H

1 2 3 4 1 2 3 4 1 2 3 4

Out A Out B Out C

Stereo Summing 8 Output DA - 2x8

One stereo input summed to 8 mono outputs

1 2 3 4 1 2 3 4 1 2 3 4

Out D Out E

1 2 3 4 1 2 3 4

Out F Out G Out H

1 2 3 4 1 2 3 4 1 2 3 4

Out A Out B Out C Out D Out E Out F Out G

Stereo DA - 1x2 / Mono DA - 1x4

One stereo input (1/2) to 2 stereo outputs (A/B,C/D) and one stereo input (3/4) mixed to 4 mono outputs (E,F,G,H)

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

Out H

1 2 3 4

Out A Out B Out C Out D Out E Out F

Stereo Program with 2 Summed Mix-Minus outputs - 1x2 with 3 Mix-Minus

One stereo input (1/2) to 2 DA outputs (A/B,C/D) plus two mix-1 outs (E,F) and two mix-2 outs (G,H)

1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1

Out G

2 3 4

Out H

1 2 3 4

Out A Out B Out C Out D Out E Out F

Mono Program with 3 Mix-Minus Outputs - 1 with 4 Mix-Minus

One mono input (1) to 2 DA outputs (A,B) plus three sets of mix-1, mix-2, and mix-3 outputs (C,D/E,F/G,H)

Out G Out H

Page 39

Radio Systems Millenium-H Hybrid Console

Illustration E-6

Intercom Card Wiring

To interconnect the Intercom Card to Radio Systems' Millenium Analog Consoles

Intercom Control

(To J1 on the Output Bd.)

Table Top Speaker

Drive Volume

Remote Console

Drive Volume

Table Top Speaker

Receive Volume

Remote Console

Receive Volume

Table-top/Console Programming

(Program J1 thru J4)

Jump left pins for table-top

Jump right pins for console

Intercom Audio

(To J36 & J37 on the output bd.)

These pre-made factory cables included with the squawk box card

J2-2

J2-3

J2-1

Output Board

Talk-Back Connectors

J1

J36

3 +15V

2 GND

1 Squawk Ctl

5

4

3 GND

2

1 TB Out

J37

3

2

5 (Cue In)

4

1

TB In +

Console Intercom 1 +

Console Intercom 1 -

Shield

Table Top Speaker 1 Hot

Table Top Speaker 1 Switched

Console Intercom 2 +

Console Intercom 2 -

Shield

Table Top Speaker 2 Hot

Table Top Speaker 2 Switched

5

6

7

8

9

10

3

4

1

2

4

3

6

5

2

1

8

7

10

9

VR2

VR26

Table Top Speaker 4 Switched

Table Top Speaker 4 Hot

Shield

Console Intercom 4 -

Console Intercom 4 +

Table Top Speaker 3 Switched

Table Top Speaker 3 Hot

Shield

Console Intercom 3 -

Console Intercom 3 +

Page 40

Install shorting jumper for unbalanced patch point inputs

From host's mic patch point on 6 input board

Intercom Output Level Set

( External Cue Input - located on circuit board far right)

Intercom Input Level Set

Wiring

1. Connect operators mic loop thru point (or other line level source) to output board talk-back input (J37 pins 1 & 2).

2. Connect provided patch cables from squawk box card to output board (control cable from squawk back card J1 to console connector J1 and the audio cable from squawk box card J2 to console conenctors J36 & J37).

3. Install provided cables to connect J3 (talkback control) and J4 (logic board). However, a factory tech. note is available for field modification for single unit (no logic board required) operation.

4. The Intercom Card has 4 identical I/0 Sections. Each can host either a table-top speaker or another console that has been fitted with an intercom card.

5. Connect speakers to terminals labeled "table-top speaker hot" and "table-top speaker switched" (1-4). Use shielded cable. Consult interconnection diagram on next page for hook-up. Select table-top speaker on console selector buttons for hands-free mode. Table-top speakers can

"call" the console via call button.

6. Connect up to four console intercoms to terminals labeled "console intercom +" and "console intercom -". Consoles must select each other to establish a push-to-talk pathway.

7. A maximum of four stations (any combination of table-top and console units) may be connected.

8. J1 thru J4 must be programmed to select a console or table-top speaker for each channel.

9. Set VR2 for Intercom output level and set VR26 for Intercom input level

Installation

When ordered with the console, this optional board normally will be factory-installed. For field installation, use the four plastic stand-offs provided to mount the board on the inside rear console wall near the associated connectors. Wire with supplied harness cables. Install provided cables to connect J2 (audio in and out), J3 (talkback control) and J4 (logic board). However, a factory tech. note is available for field modification for single unit (no logic board required) operation.

Radio Systems Millenium-H Hybrid Console

Illustration E-7

Intercom Card Table-Top Speaker & Console Interconnection

Page 41

Intercom Card (Internal to Console)

Table-top/Console Programming

(Program J1 thru J4)

Jump left pins for table-top

Jump right pins for console

Table Top Speaker

Drive Volume

Remote Console

Drive Volume

Table Top Speaker

Receive Volume

Remote Console

Receive Volume

Console Intercom 1 +

Console Intercom 1 -

Shield

Table Top Speaker 1 Hot

Table Top Speaker 1 Switched

Console Intercom 2 +

Console Intercom 2 -

Shield

Table Top Speaker 2 Hot

Table Top Speaker 2 Switched

4

5

6

1

2

3

7

8

9

10

9 pt

5

4

3

2

1

8

7

6

10

9

Table Top Speaker 4 Switched

Table Top Speaker 4 Hot

Shield

Console Intercom 4 -

Console Intercom 4 +

Table Top Speaker 3 Switched

Table Top Speaker 3 Hot

Shield

Console Intercom 3 -

Console Intercom 3 +

Talk Button

Level Pot

Intercom Card (Internal to Console)

(Connect up to four)

Note:

Use shielded cable when making connections.

Be certain to perform J-1 thru J-4 programming to set table-top or console operation.

Connect up to four table-top or console intercoms in any combination.

(Only one of each can be connect to any channel)

Radio Systems Millenium-H Hybrid Console

For Assy:

18589/90/91/92

Release: 01-15-12

Page 42

Radio Systems Dual A to D Converter

Option Card for Millenium Consoles

pn18589 – 32 kHz / pn18590 – 44.1 kHz / pn18591 – 48 kHz / pn18592 – 96 kHz

Application and Programming

This console option board converts two discreet, balanced, line-level analog signals to AES-EBU format outputs. The board may be factory ordered at 32/44.1/48/96 kHZ sample frequency output. Connectors are to the StudioHub+ pin-out format.

Use the on-board programming pins to set analog input levels for +4 or 0dB input level and connect the RJ-45 shields to the circuit board and DC ground. On-board DC connectors are in parallel and may be used to loop power to another device.

Installation

When ordered with the console, this optional board normally will be factory-installed.

For field installation, use the four plastic stand-offs provided to mount the board on the inside rear console wall near the output board and wire it to the output board with two short RJ-45 patch cables and the (supplied) DC-link cable to an available 3-pin DC connector on the output on 6-input board..

Manufactured Date:

Status:

Application:

Notes:

Option Board Grid

01-15-2012

Active

All Milleniun Consoles

StudioHub+ Connectivity

601 Heron Drive · Logan Township, NJ 08085

856/467-8000 · 856/467-3044 Fax · [email protected]

www.radiosystems.com · www.studiohub.com

Radio Systems Millenium-H Hybrid Console Page 43

5.2 Intercom Card Overview

The Intercom is an optional accessory for the Millenium broadcast consoles. The card provides 2-way amplification for connection of the console to any combination of four speakers or Radio Systems’ consoles. One or two cards may be installed in a console to service four or eight stations.

5.2.1 Operation

1. With a table top speaker (Radio Systems Part #7696)

To page and speak from the speaker to the console, push and hold the button on the speaker.

To respond to or call the speaker from the console, select the speaker location on the console 4/8 position selector and push and hold the talkback button.

Release the talkback button to allow the speaker location to respond hands free.

Deselect the speaker location on the 4/8 position selector to hush the listen path.

2. Between two consoles

Select the console you wish to communicate with on the 4/8 position selector.

Push and hold the talkback button to page and speak to the selected console.

To respond, the selected console must select the paging console on the 4/8 position selector, (if it is also equipped with a intercom card) and push and hold the talkback button.

Push-to-talk conversation may continue between the consoles. Console operators should deselect the console on the 4/8 position selector when the conversation is complete.

5.2.2 Installation and Wiring

Use the plastic stand offs provided to mount the intercom card and the logic selector card (required and utilized only in

Millenium consoles) next to each other on the inside back wall of the console behind the output board.

5.2.2.1 Control Wiring

Connect provided cables from intercom card to output board (control cable from intercom card J1 to console connector

J1.

The eight position switcher must be programmed for interlocked operation. See Illustration E-2 for programming the

Selector Logic Card.

5.2.2.2 Intercom card audio wiring

Connect the audio cable from intercom card J2 to console connectors J36 and J37.

Connect the 4-conductor audio cable between intercom card connector J2 and output board Talk-Back audio connectors

J36 & J37. (For RS Series consoles only – connect J4 to the 4-position front panel mechanical switch.)

5.2.2.3 Console internal wiring

Connect operator’s mic loop thru point (or other line level source) to output board talkback input (J37, pins 1&2).

5.2.2.4 Table-top speaker wiring

Utilize up to 300’ of 2-conductor shielded cable. At the intercom card, connect the shield to GRND, the tip from the phone plug (switch output) to call, and the ring to the other side of the call switch.

5.2.2.5 Console interconnection

Interconnect the SPKR, GRND and AUX in pins from the appropriate intercom card outputs on the two consoles, or to talk-back Audio Connectors J36 & J37 on consoles with no intercom board.

Radio Systems Millenium-H Hybrid Console Page 44

5.2.3 Calibration

Adjust the output level control on the intercom card for more level at the remote speakers or console.

Adjust the external cue level control on the analog output board to set the intercom input level and to balance it with the cue level of the internal console cue inputs.

Radio Systems Millenium-H Hybrid Console

Maintenance and Troubleshooting

Page 45

6.1 Overview

There is no required maintenance for Millenium consoles. Front panel level controls and switches will not become noisy since they control only DC for the VCAs and CMOS analog switches. A very dirty fader control will skip levels erratically.

Normal cleaning agents may be used to clean the controls.

Painted surfaces should be cleaned with a warm damp cloth with mild detergent. Avoid any solvents that might attack plastic switches or meter and clock lenses.

Vacuuming or blowing dirt off of circuit boards occasionally is also recommended. Do take care to avoid dropping wire clippings on the large horizontally mounted circuit boards during console installation and maintenance.

Millenium consoles are designed for ease of repair should it become necessary. Connectors are used to make all circuit board connections. Replacement mechanical components (faders, pots) come prewired with connectors to allow quick replacement without soldering.

6.2 Power Supply

Read the Power Supply Theory of Operation prior to troubleshooting. The power supply provides all voltages for the console. Front panel LEDs monitor the DC outputs from the supplies. A second 15v LED monitors an optional power supply module which can be provided for extra current needs. The power supply modules are internally fused. The + and -7.5v outputs are regulated and derived from the + and - 15v supply.

Each regulated output has independent short circuit protection. Before suspecting the power supply of defect, unplug the power supply from the console and check the LEDs.

If the +15v and +7.5v LEDs are not illuminated the +15v supply should be checked for fault (either a defective supply or shorted +15v output) since the +7.5v has been derived from the +15v output.

If a fault is detected in one of the internal power supply modules, contact the factory for replacement. Do not attempt repair.

6.3 Six Channel Audio Board

Read the Theory of Operation prior to troubleshooting. The Six Channel Audio Board contains six identical stereo circuits. Each circuit is controlled by an individual Input Control Board. If both the left and right channels are not operating properly, or if the input cannot be placed into the cue mode, swap the Six Channel Control Board with one from a known good input before suspecting the Six Channel Audio Board of defect. This can be accomplished by interchanging ribbon cables at header J9 on the Six Channel Audio Board. If the problem is resolved, the Six Channel Control Board or associated components, such as switches, fader, or interconnecting cable is at fault.

If the problem is not resolved, signal tracing and voltage measurement techniques maybe used. If the problem is occurring in both left and right channels, the problem will most likely be with the control voltages for the CMOS analog switches or for the VCAs.

Check for signal at the insert point return, at the output of U3C and U4D, and at the output of U8A and U8B.

If there is no signal or the wrong signal (A instead of B input), at the insert point and this is occurring in both left and right channels, suspect a problem with the control voltages at Ul and U2. A bad ribbon cable connection at header J9, a defective IC at Ul and/or U2, or defective D1, D2, R25, or R32 can cause this problem. If the problem is not occurring in both channels, Ul and/or U3 (left channel), or U2 and/or U4 (right channel) should be suspect. Substitution with new ICs will produce the fastest results.

If there is no signal at the output of U3C or U4B with signal present at the insert point, then replace U3 or U4.

If signal is present at the output of U3C and U4B but is not present or is at the wrong level at the output of both U8A and

U8B, the VCA control voltage should be suspect; replace U7. If desired the control voltage can be carefully measured at pin 1 of U7. With the fader at maximum the voltage will be approximately negative .07v. With the fader at minimum the voltage will be approximately +6v. If the problem is not occurring in both channels, suspect U6 and U8 (left channel), or U5 and U8 (left channel). U8 should be substituted first. If the VCA is replaced, a distortion null adjustment must be made.

If signal is present at the output of U8A and U8B but there is no signal on both the left and right of the mix buses or if the signal is routed to the wrong mix buses, the control voltages to U10 and U9 should be suspected. A bad ribbon cable

Radio Systems Millenium-H Hybrid Console Page 46

connection at header J9, a defective U9 and/or U10, or a defective R91, R93, R99, R100, R101, R102, R103, or D3, will cause this problem. If this problem is occurring in only one channel, suspect U10 (left channel) or U9 (right channel).

6.4 Six Channel Control Board

Read the Theory of Operation before troubleshooting. The Six Input Control Board utilizes a microprocessor and clue logic. Each section is identical and isolated from all others. A suspected section can be swapped with a known good one by interchanging ribbon cables.

6.5 Output Board

Read the Theory of Operation before troubleshooting. The Output Board provides several different functions for the console. It is important to understand the signal path before attempting to troubleshoot. Briefly, the audio current from the mix buses is converted back to a voltage, this voltage is fed to both the monitoring circuitry and except for the cue bus, to the output amplifiers The output amplifiers feed the output connectors and the VU meter amplifiers. The VU meter amplifiers feed the meters and the peak LED detectors. If a problem occurs in this chain, signal trace to the last stage in the chain that performs properly and then troubleshoot the following stage. Replacing the IC will usually cure the problem. As pointed out, current summing mix buses are utilized in the console. Therefore, when troubleshooting a correctly functioning mix bus, no voltage will be measurable on the bus itself.

The monitor amplifier circuitry can be broken down into several sections for troubleshooting. The first involves the

CMOS analog select switches U18 and U20. If no audio, or audio that is different from the one selected, is available from the unmuted monitor outputs (left and right channel), ICs U22, U18, U20, U27 or the Monitor Control Board and its connections to the Output Board should be checked. Audio maybe monitored at pin 3 of U18 and U20. The Six Channel

Audio Board section outlines the control voltages used by U18 and U20 for signal selection. These maybe measured at the IC.

If audio is missing from the left or right unmuted monitor output, suspect U22, or U18 (right channel), or U20 (left channel). If audio is available from the unmuted monitor output but not the muted output, suspect U23 and U24. If the only problem is the dimmed monitor output, in both the left and right channels suspect U23, and U33. The VCA control voltage can be carefully measured at pin 1 of U33. With the Mute 1 bus inactive, the front panel monitor level control should vary the voltage from +.6v to -.05v. With the Mute 1 bus active, the dimming trimmer should vary the voltage from +.6v to

-.05v. If the problem is only occurring in one channel, suspect U24 and U26 (left channel) or U25 (right channel).

The headphone amplifier circuitry is similar to the monitor amplifier circuitry described above. The major difference is that U27 either selects the CMOS analog switch control voltages from either the headphone switches (normal mode) or the monitor switches (follow mode).

The cue amplifier circuitry can be monitored in three places. If signal is not present at pin 1 of U12, replace U12 or check the associated components. If signal is present at pin 1 of U12, check for signal at C114. If signal is not present suspect Q6 or associated components. If signal is present at C114, suspect U28, U29 or the front panel cue level control or a connection from the Headphone Control Board. The VCA control voltage at pin 2 of U29 can be carefully measured. The voltage will vary from +.6v to -.05v depending on the setting of the level control.

6.6 Changing VCAs

6.6.1 Distortion Null Adjustment

VCA distortion null is typically not required unless a VCA or distortion trimmer has been replaced. To null distortion on an input board:

1. Connect a +4dBv, 2kHz sine signal to the defective input. Remove any gain jumpers or attenuators.

2. Turn the mixing channel on and set the fader for “0.” Select the program bus output.

3. Connect a distortion analyzer to the defective program output (right or left) and adjust the associated VCA distortion null for a minimum distortion reading on the analyzer.

If a monitor, headphone, or cue VCA needs replacing:

1. Connect a 4dBv, 2kHz sined signal to any line level input associated with the defect (right or left). Remove any gain jumpers or attenuators.

2a. For defective monitor or headphone VCA’s, select the program bus and turn the channel on. Set the fader to “0.”

2b. Set the monitor or headphone level control to 1/2 full.

Radio Systems Millenium-H Hybrid Console Page 47

2c. Connect a distortion analyzer to the defective output and adjust the associated VCA distortion null for a minimum distortion reading on the analyzer.

3a. For a defective cue VCA, set the fader to “cue.”

3b. Set the cue headphone level control to 1/2 full.

3c. Connect a distortion analyzer to the cue speaker and adjust the associated VCA distortion null for a minimum distortion reading on the analyzer.

Radio Systems Millenium-H Hybrid Console Page 48

Theory of Operation

7.1 Power Supply Circuit Description

The external power supply provided with Millenium Consoles contain internal modules which provide +15v and -15v at 6

Amps. Each supply is internally fused. Output voltages from the modules are connected to the Power Supply Interface

Board at J1 and J4.

The internal modules are further regulated to provide +7.5 and -7.5 volts required by the console.

Front panel LED monitoring is provided for all regulated outputs.

The Power Supply Interface Board contains:

1. A common ground point for all power supply and console circuits.

2. Connections from the modules to power header J3 which provides main power to the console, and to header

J2 which provides power for the Cue Amplifier.

3. Status indicator LEDs for all power supply outputs.

4. VR1 and VR2 which provide negative and positive 7.5 volts respectively.

7.1.1 Grounding

The following grounds are tied together at the power supply: A.C. power, power supply chassis, Module A common,

Module B common, console digital ground, console analog ground, console headphone ground, console cue amplifier ground, and console chassis ground.

7.1.2 Positive and Negative 7.5 volts

VR2 and VR1 are three terminal adjustable voltage regulators which have been set at the factory to provide +7.5 volts and -7.5 volts respectively from the output of Module B. These voltages are used to provide power to the front panel level controls (which in turn control the VCAs) as well as to the CMOS audio switches.

7.2 Six Channel Control Board

7.2.1 Brief Description

The Six Input Control Board provides six identical and independent logic circuits. One circuit is associated with each mixing channel lid..

Each circuit provides the following:

1. Input select logic and indicators, cue logic and indicators, and on/off logic and indicators.

2. Interface between logic levels and those required by the Six Channel Input Board

3. Interface between the fader and VCAs (located on the Six Channel Input Board)

4. Generation of Mute 1 and Mute 2 control voltages

5. Generation of Timer Reset pulse

6. User remote control and remote interface connections

7.2.2 Detailed Description

As each circuit is identical, only one will be described. There are no connections between circuits. Microcontroller U2 has five ports (RA, RB, RC, RD, and RE). Ports RB and RE are configured as outputs, the others as inputs. The output port signals are as follows:

RBO

RB1

RB2

High with Input A selected, low with Input B selected

High to bring the VCA’s to full attenuation

High when the Program Bus is selected

Radio Systems Millenium-H Hybrid Console Page 49

7.3

RB3

RB4

RB5

RB6

High when the Audition Bus is selected

High when the Telephone Bus is selected

High when the Cue Bus is selected

High when the channel is on

RB7 High when the channel is off

RE0 High (momentary or maintained) to provide a remote control pulse or holding signal when the channel is turned on.

RE1 High (momentary or maintained) to provide a remote control pulse or holding signal when the channel is turned off

RE2 High (momentary) when the on button is pressed to generate a timer reset signal

U2 sets the state of its output ports depending on the signals (switch and jumper set) present at its input ports (RA, RC and RD).

U3A, B and C “logic” and the selected buses with the channel on signal. U4, B and C provides an interface between the logic level signals and those required by the Six Channel Input Board. U5 switches either its A or B inputs to its Y outputs depending on the state of the signal at U5 pin 1. U5 routes the proper Mute, Timer Reset and Ready Lamp signals to their destination depending on the input selected (A or B). In similar fashion, based on the input selected, U1 selects the proper pulse or holding signal to route to the user remote control.

See the “Six Channel Control Board” section for jumper selection and operational details.

Six Channel Audio Board Circuit Description

7.3.1 Brief Description

The Six Channel Input Board contains six identical stereo amplifiers which provide the following:

1. selection of the input signal

2. gain adjustment of the input signal

3. routing of the selected signal to the desired mix bus or buses

7.3.2 Detailed Description

The left and right channels are identical, so only the left will be discussed.

Left channel input A signals are attenuated 13dB by R1, R3, and R2 (or by R8, R7 and R9 for input B) before routing to

IC U1, a type 4052 analog switch. The amount of attenuation maybe varied by the installation of resistors into the DIP component carriers provided, and then plugging the DIP component carriers into socket J3 for input A or J4 for input B.

Bridging R3 (or R9) would increase the attenuation while bridging R1 and R2 (or R8 and R7) would decrease the attenuation. Adjusting the attenuation allows each input to accept signals ranging from microphone to high level.

Integrated circuit U1 selects either input A or input B depending on the voltage present on pin U1-10. A low on pin 10 will allow input A signals to reach the following circuitry. Input B will be selected if pin 10 is high. The voltage on pin10 is controlled by circuitry on the Input Control Board.

Integrated circuit U3 (sections A, B, and C) and transistors Q1 and Q2 form a differentially balanced instrumentation amplifier for left channel input signals. Transistors Q1 and Q2 are low noise devices which allow this circuit to operate with microphone levels in addition to high level inputs. Transistors Q1, Q2, and integrated circuits U3A and U3D form a balanced amplifier whose gain is determined by R28, R29 and R21. The gain may be increased by the installation of jump ers onto header J5 which would reduce the value of R21. A -7.5v reference is fed to the positive inputs of U3A and U3D which in turn control the current through Q1 and Q2 so that the negative inputs of U3A and U3D also remain at -7.5v.

This feedback makes Q1 (Q2) a part of U3A (U3D) rather than an independent amplifier preceding the IC. Integrated circuit U3B is a differential amplifier which converts the balanced signal from U3A and U3D to a unbalanced signal.

The signal from U3B is summed with right channel signal from U4C and routed to Q7 which will place this mono signal onto the Cue Bus when the Q7 is tured on (by pulling its gate low) by the Input Control Board. In addition, the signal also is routed to J7, a stereo unbalanced insert point, as well as header J7, which allows bypassing of the patch point, and easy placement of a mixing channel into mono operation. In this case, the left input would feed both the left and the right channel mix buses. The level at this point is nominally -4dBm. Integrated circuit U3C buffers the signal from the insert point prior to IC U6, a dBx Voltage Controlled Amplifier (VCA).

Radio Systems Millenium-H Hybrid Console Page 50

7.4

The VCA is a current in, current out device, which may provide amplification as well as attenuation of the signal from

U3C. The VCA is capable of over 100 dB of level control, depending upon the control voltage applied to pin 3 of the

VCA. The front panel linear taper fader supplies a control voltage ranging from +7.5v at the minimum setting of the fader to 0 volts at the maximum setting. This voltage is applied to the positive input of U7B which serves as a buffers. Resistors R75 and R76 attenuate the buffered control voltage to levels acceptable by the VCA. Transistors Q5 and Q6 in conjunction with resistors R78 and R79 shunt R76 to convert the linear fader taper into a three slope audio taper approximation. The turn on points for Q5 and Q6 are determined by the fader setting and the voltage reference on the bases of Q5 and Q6. U7A and resistors R74 and R77 add a negative offset to the control voltage so that the VCA is at unity gain at normal fader settings, and is supplying 15dB of gain at the maximum fader setting. In addition, U7A drives both left and right channel VCAs to maintain proper channel tracking. VR2 is the VCA distortion null adjustment. Integrated circuit

U8A converts the current output from the VCA into a voltage.

Integrated circuit U10 is a 4053 analog switch which connects the output of U8A to the mix buses as determined by voltages from the Input Control Board which are applied to U10 pins 6, 9, 10, and 11. Pin 6 must be low in order for the signal from U8A to reach any mix bus. Pulling pin 9 high (+7.5v), in conjunction with pulling pin 6 low, will place the signal from U8A onto the mono mix bus. Similarly, pulling pin 10 or pin 11 high will place the signal onto the audition and program mix bus respectively. Since pins 9, 10, and 11 operate independently from each other, any combination of mix buses may be selected at the same time.

Monitor Control Board

7.4.1 Brief Description

The Monitor Control Board is mounted on the right-hand side of the console lid and provides the following functions:

1. Monitor select logic and indicators, headphone select logic and indicators.

2. Interface between logic levels and those required by the Output Board.

3. Interface between the Monitor, Headphone and Cue level controls and the VCA’s located on the Six Channel

Board.

4. Clock Timer interface and Timer Auto Reset and Start logic.

5. Eight position accessory switches and associated LED’s

7.4.2 Detailed Description

Microcontroller U3 has five ports (RA, RB, RC, RD, and RE). Ports RA, RB and RE are configured as outputs, the oth ers as inputs. The output port signals are as follows:

RA0 Low when the Program Bus is selected for headphones

RA1

RA2

RA3

RA4

RA5

Low when the audition Bus is selected for headphones

Low when the Telephone Bus is selected for headphones

Low when the Cue Bus is selected for headphones

Low when the Timer Auto Reset and Start functions are enabled

Low when External Input 1 is selected for headphones

RE0

RE1

RE2

RBO

RB1

RB2

RB3

RB4

RB5

RB6

RB7

Low when External Input 2 is selected for headphones

Low when External Input 3 is selected for headphones

Low when External Input 4 is selected for headphones

Low when the Program Bus is selected for the monitor

Low when the Audition Bus is selected for the monitor

Low when the Telephone Bus is selected for the monitor

Low when the Cue Bus is selected for the monitor

Low when External Input 1 is selected for the Monitor

Low when External Input 2 is selected for the Monitor

Low when External Input 3 is selected for the Monitor

Low when External Input 4 is selected for the Monitor

Radio Systems Millenium-H Hybrid Console Page 51

7.5

U3 sets the state of its output ports depending on the signals (switches) present at its input ports (RC and RD). U2 and

U4 converts the output of U2 to the BCD format required by the analog switches on the Output Board. Transistors Q1,

2, 3, 4, 6 and 7 provide an interface between the logic level signals and those required by the Output Board. Transistors

Q5 and Q8 interface the Timer Auto Reset and Start signal with the Clock/Timer. Transistor Q9 turns on (under control of U3) to prevent the Auto Reset and Start signal from reaching the Clock/Timer. Eight accessory switches and LED’s are brought out at J1 and J2 for user remote interface. Current limiting resistors for the LED’s are user-installed into header J5.

The voltage from the wiper of the Monitor, Headphone and Cue level controls is filtered and scaled to proper VCA levels by the associated capacitor and resistors.

Output Board Circuit Description

7.5.1 Brief Description

The Output Board performs the following functions;

1. Summing mix bus current to voltage conversion

2. Differentially balanced audio output amplifier

3. Differential meter amplifiers

4. Peak detectors and LED drivers

5. Input selection of headphone and monitor amplifier signals

6. Level control and muting of monitor amplifier signals

7. Level control and power amplification of headphone signals

8. Level control and power amplification of cue signal

9. Talk back control and interface

10. Drivers for Mute 1, Mute 2, and timer reset

11. Power supply distribution to the Six Channel Mixer Boards

7.5.2 Detailed Description

Five of the six summing buses in the console are similar to each other. These are left program, right program, left audition, right audition, and mono. The sixth mixing bus for the cue channel will be discussed separately. Integrated circuit U14B is utilized as a unity gain current to voltage converter for the left program mixing bus. The output of U14B is routed to the headphone and monitor select CMOS analog switches as well as to VR7 for adjustment prior to receiving

20dB of amplification from U7A. U7A drives the + left program channel output while U7B inverts the output of U7A and drives the -left program channel output. Integrated circuit U2A, diodes Dl thru D4 and the associated resistors convert the balanced left program channel output to a floating D.C. voltage to drive the left program VU meter. Therefore, the effects of loading the console output or erroneously grounding one of the console outputs will be reflected on the VU meter. Trimmer VR2 provides “0” VU adjustment for a range of console outputs. Differential amplifier U2B converts the meter voltage from floating to single ended prior to applying the voltage to U15A. Integrated circuit U15A functions as a peak detector with the trip point adjusted by VR12. When the positive peak of the audio signal (applied to U15 pin 4) becomes more positive than the reference set by VR12 the output of U15A will go to -15 volts and in turn the output of

U15B will go to -15 volts and illuminate the peak LED. At the conclusion of the peak U15 pin 4 will fall to lower potential than the reference set by VR12, and the output of U15A (which is an open collector) will allow C59 to be charged by

R115. When the potential at U15 pin 9 is more positive than the reference at U15 pin 8 the output of U15 B will go high and the LED will extinguish. Capacitor C59 and resistor R115 act as a .5 second peak stretcher which allows the LED to properly illuminate.

Integrated circuit U12A converts the cue mix bus signal to a voltage and then the signal is routed to the headphone and monitor select CMOS analog switches, and to the cue VCA. Integrated circuit UlA allows an external signal (such as talk back) to be summed onto the cue summing bus. VRl allows adjustment of the external signal.

The monitor amplifier circuitry is identical for the left and right channels. So only the left channel will be discussed.

Integrated circuit U20 is a 4051 CMOS analog switch. U20 is a single pole, eight position switch. Eight inputs are connected to U20 which selects one input depending on the voltages present on U20 pins 6, 9, 10, and 11, and routes the selected input to U20 pin 3. Four of the inputs to U20 come from the output of the mix bus current to voltage converters.

These are left program, Left Audition, Mono, and Cue. In addition, there are four external inputs (A thru D) which are

Radio Systems Millenium-H Hybrid Console Page 52

connected to the input of U20. Each external input has an associated trimmer for level adjustment. The voltage at U20 pins 6, 9, 10, 11 are generated on the Monitor Control Board. The truth table for input selection is as follows:

Input

None

Program

Audition

Pin 6

High

Pin 9

Low

Pin 10 Pin 11

Low Low

Mono

Cue

Low

High

Low

D Low High High High

Integrated circuit U22B provides 32dB of gain to the selected signal. U22B drives the Unmuted Left Channel Monitor

Output, the input of VCA U26, and one of the inputs of U23, a 4053 type CMOS analog switch. VCA U26 is a dBx current in, current out device, capable of over 100dB of level control. U24B is a current to voltage converter which drives the Left Channel Monitor Output. Trimmer VR26 provides distortion null adjustment for the VCA. There are two voltages available to control the gain of the VCA. The first is generated by the front panel monitor level control, and the second is generated by trimmer VR27 which is the monitor dim control. Whenever the Mute 1 Control Bus is high, U23 pin 9 will also be high, and the wiper of VR27 will be connected to the positive input of U33A. Similarly, when the Mute 1 Control

Bus is low, U23 pin 9 will also be low and the wiper of the front panel monitor level control will be connected to the positive input of U33A. U33A buffers the selected control voltage and provides a negative offset so that the VCA will operate at unity gain at normal level control settings, and will provide 15dB of gain at when the level controls are set at maximum.

When Mute 2 Control Bus is high, U23 pins 10 and 11 are also high and the selected monitor signal is disconnected from the input of U24D which drives the Left Channel Muted Monitor Output.

The operation of the headphone amplifier is similar to the monitor amplifier. The inputs of U21 (the headphone input select CMOS analog switch) are paralleled with U20. Selection of the input signal is identical to that of the monitor amplifier circuit with the exception of U27. The control voltages from the Monitor Control Board appear at U27 pins

1, 3, 5, and 7, while the control voltages from the Headphone Control Board appear at U27 pins 2, 4, 6, and 15. If no headphone input switches are depressed, U19 will connect the control voltages from the Monitor Control Board to U21, resulting in a headphone follows monitor configuration. Otherwise, the Headphone Control Board will select the desired headphone input. Integrated circuit U22D drives a prefader headphone output, U31 is a dBx VCA, U30 is a power amplifier for driving headphones, and U33 buffers and offsets the VCA control voltage generated by the front panel headphone level control.

The output of the Cue Bus current to voltage converter is connected to transistor Q6, which inhibits the cue audio from reaching VCA U28, if the Mute 1 Control Bus is high. U29B is a power amplifier for driving the cue speaker, and U29A buffers and offsets the VCA control voltage generated by the front panel cue level control.

Talk back signals are gated by transistor Ql (which is controlled by the front panel talk back switch) prior to buffering and amplification by UlB.

Transistors Q5, Q4, and Q3 provide open collector outputs for the Mute 1, Mute 2, and Timer Reset control buses respectively.

7.6 RFI Suppression

Careful consideration has been given to Radio frequency Interference protection in the RS Series consoles. Internal designs employed include RF bypass capacitors, ground plane circuit board technology, metal rap-around enclosures and single point ground returns.

Still, because every RF environment is unique, some extremely intense RF locations, especially high AM fields, may still experience some interference. These installations will require individual, on-site troubleshooting to eliminate the interference.

1. Locate the source of the interference. RF may enter the console via input or output lines.

Turn off the channels via the channel on/off switch. If the RFI disappears, the source of the interference is that channels input wiring.

If the RFI does not disappear, unplug the output connectors, one at a time, on the Output Board. When the interference disappears, you have located the source of the AFI.

Radio Systems Millenium-H Hybrid Console Page 53

2. Change the grounding system.

The console routes all signal and control grounds to a single ground point at the powersupply. This is usually the preferred method to minimize noise and RFI.

However, on the input(s) or output(s) you have determined to be causing RF interference, you should reroute the ground.

If the interference persists, reroute the input or output ground wire to the console chassis ground. This is conveniently available at the nearest circuit board mounting screw.

7.7 Using Active Balanced Circuitry

Balanced lines have been used for many years and are in continuing use today because of their immunity to stray pickup. Induced signals appear on both sides of the balanced line. The receiving end of the balanced line responds only to the difference voltage between the lines which is the desired signal. Induced signals are common to both and are balanced out.

Transformers have been the mainstay of balanced circuitry for decades. Unfortunately, transformers cause distortion and ringing, and are susceptible to magnetic flux pickup. Further, good quality audio transformers are very expensive.

The use of op-amp balanced circuitry has the advantage of transformers without the disadvantages. The only caveat is that careful wiring practices are more important with active balanced than with transformers.

Active balanced outputs and inputs use three wires: +, -, and ground. The + and - terminals are both driven and neither should ever be connected to ground. For best performance, a three-conductor shielded wire should be used. The third wire completes the ground circuit. The shield should be connected to the ground at one end of the wire only.

If a two-wire shielded cable is used, it is important that a ground connection be made between the sending and receiving units. A ground circuit through equipment chassis or through three-prong AC cord ground is also acceptable.

Single-ended audio interconnections lack the interference immunity of balanced hook-ups. For the reason, keep unbalanced connections short, direct, and well separated from AC power wires. To drive a single-ended load from an active balanced source, use coaxial wire: + to center conductor and ground to shield, leaving the - output unconnected. To feed an active balanced input from a single-ended source, use coaxial wire, connecting the hot center conductor to +.

Connect the shield to ground and put a jumper from ground to -.

When driving an active balanced input from a transformer balanced floating source, use two conductor shielded wire.

Ground the shield at the source end. Establish good ground between the chassis either directly or though AC plug ground prongs. At the load, connect the + lead to the + input and the - lead to the - input. Put two 300 ohm resistors in series between the + input and the - input and connect their mid-point to the load ground. This correctly terminates the source output transformer for optimum frequency and transient response (freedom from ringing) and provides a low impedance return path for leakage and induced hum. If more than one active balanced load is to be placed across a floating balanced transformer source, install this resistive termination once only. From that location to the active balanced loads, run three-conductor shielded wire, shield continued from the sources chassis, + from +, - from -, and ground from the mid-point of the terminating resistors.

To drive a balanced floating transformer load from an active balanced source, use shielded wire. Connect the shield to source ground and leave the shield open at the load end. Connect + to + and - to -, and establish a good source ground to load chassis connection, either through a third wire in the interconnect cable or through chassis contact or

AC cord third wire ground.

Interconnections between pieces of stereo equipment require doubling the connections described above without duplicating the ground connection. Between pieces of active balanced stereo equipment, then, 5 shielded conductors should be run.

When testing active balanced equipment with single ended test equipment, do not connect the - to test equipment ground. Most modern test equipment provides balanced inputs. In many dual-trace oscilloscopes, balanced signals may be displayed by running the two inputs in the “add” mode with one input switched to invert. To perform a test with single-ended equipment, + and - outputs must be tested independently and their results added. Testing only a single output results in a 6 db loss in output level.

The active balanced equipment interconnection format makes possible state of the art fidelity. Careful attention to detail and conservative practice will be rewarded with outstanding flat frequency response, low distortion, and wide dynamic range.

Radio Systems Millenium-H Hybrid Console Page 54

Millenium Console Specifications

Models Available

RS-6A: 6 Channel RS-12A: 12 Channel

Audio Inputs

RS-18A: 18 Channel RS-24A: 24 Channel

Type: Differentially balanced instrumentation amplifiers with gain set jumpers and selectable input attenuators

Level: Jumper selectable gain settings to accommodate nominal input levels from -60 dBm to +10 dBm. Maximum input level: +22 dBm

Impedance: 20K ohms or jumper selected

Headroom: 22 dBm at any level

Line Outputs

Type: Active Balanced

Level: Adjustable 0 dBm to +10 dBm, maximum output +22 dBm

Impedance: 100 ohms

Distortion: .008% at nominal operating level, 20 Hz to 20 kHz, PGM, AUD, and Mono outputs

Signal to Noise:

88dB (or better) below +4 dBm output with 0 dBv input level, 20 kHz bandwidth, 600 ohm source impedance

(line to line)

74 dB (or better) below +4 dBm output with - 50 dBv input level, 20 kHz bandwidth, 150 ohm source impedance (mic to line)

Headphone Output

Level: 1 volt RMS nominal, 10 volts RMS maximum into 600 ohm headphone

Distortion: .05% typical, .1% maximum

Impedance: 50 ohms to front panel jack, 330 ohms to prefader (external amp) output

Monitor Sends

Level: 1 volt RMS nominal, 10 volts RMS maximum, 330 ohm unbalanced

Cue Output

2 watts RMS into 8 ohm speaker

Dimensions

6 Channel: 20 3/4" Long x 27" Deep x 9" High

12 Channel: 32 3/4" Long x 27" Deep x 9" High

18 Channel: 44 3/4" Long x 27" Deep x 9" High

24 Channel: 56 3/4" Long x 27" Deep x 9" High

Power Consumption

240 Watts Maximum

Radio Systems Millenium-H Hybrid Console

Millenium Consoles - Warranty and Repair Policies

Page 55

Warranty

Radio Systems, Inc., warrants this equipment to be free from defects in materials and workmanship for a period of two (2) years for all electronic parts and subassemblies and a period of one (1) year for all mechanical parts such as faders and meters..

This warranty extends to first users of the product and future owners who purchase the product within the war ranty period.

The terms of this warranty are null and void if this product is stored or operated in an environment not conducive to electronic equipment, or shows signs of misuse or modifications which affect the proper functioning of the product. This warranty does not apply to damage caused by fire, smoke, flood, lightning, or acts of nature and physical abuse.

Radio Systems, Inc., and its associated companies, authorized distributors, and personnel are not liable for loss of revenues or other damages, or effects to the broadcast signal quality or coverage which may result from the from the improper functioning of this product.

Repair Policy

Technical assistance is available at any time, at no charge, by phone or correspondence.

During the warranty period, there will be no charge for parts or service made to units which show no sign of misuse by customer or lightning caused damage. The customer is responsible for the cost of shipping their unit back to Radio Systems for repair.

During the warranty period, shipment of small parts and assemblies will be made at no charge to the user.

Emergency, next day shipments of replacement parts and circuits will also be made at no charge at the user’s request . Chargeable services will be made COD or on Net-30 day terms to users with established accounts.

During the warranty period, users must return defective parts upon request to receive no-charge warranty services. Return shipping expenses are the responsibility of the user.

Return Instructions

Contact Radio Systems for a return authorization number.

Pack all items carefully and ship prepaid, via UPS insured, to:

Radio Systems, Inc.

Attn: R.A. # __________

601 Heron Drive

Logan Twp., NJ 08085

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