Harris 99-1395, 99-1396 Installation & Operation Manual

Installation & Operation Guide

99-1395 Desktop Version

4393 Digital Way • Mason, OH 45040 USA • Tel: [phone] FAX: [phone] • E-Mail: [e-mail] • Internet: http://www.broadcast.harris.com

99-1396 Rack Version

71-1395

rev C 12/05

Broadcast Communications Division

Designs by Pacific Research & Engineering – PR&E

®

General Information

Thanks for joining the growing family of broadcasters

employing Harris Corporation products designed by PR&E. Our

mission is to provide the finest quality products, systems, docu-

mentation and after-sale support. To this end, we invite com-

ments and suggestions for improvements to this documentation

or to any of our services.

To obtain maximum benefit, please read through this guide

prior to mixer installation.

STEREOMIXER® DIGITAL OVERVIEW

StereoMixer®
in two models: rack-mount and desktop. SMX
for single talent/board operator use in applications such as
voice tracking studios, production rooms, nonlinear editing

suites and newsrooms. It has the following features:

• Four analog inputs (one input is mono), with a front panel
TRS stereo jack for convenient field recorder connection

• Three AES-3 digital inputs (S/PDIF-compatible) with

integral sample rate converters on each input

• Two Program buses and one mix-minus bus with both
analog and digital outputs

• Stereo bargraph meter display of the two program buses,

an External Monitor Input, or Cue

• Analog room monitor output, external talk input, talk
output, headphone amplifier output for talent headphones

• Room monitor mute logic plus opto-isolated interface

logic for a hot mic warning interface, intercom talk, mic
remote panel control, channel start command outputs
and timer reset output

• Audio and logic signals use separate connectors with AMP

MOD IV crimp terminal connectors (as used on the
BMX

Input Features

The mixer has seven inputs/channels. Four are analog, three

are digital. Rear panel switches set each analog input to either

-10 dBv (unbalanced) or +4 dBu (balanced) operation.

Channel 1 is a mono line-level input designed for a pre­amplified talent mic. It can alternately be set as a mono line
input. Channels 2, 3 and 4 are analog stereo line-level inputs.
Channels 2 and 3 can alternately be set as two additional mic

inputs from guest microphone preamps. Internal DIPswitches

digital

digital

(SMXd) is a compact mixer available

d

and RMX

digital

consoles) or D-sub (logic only)

was designed

(identified on page 9) set whether ch. 1, 2 and/or 3 are mic
inputs (which mute the monitor output) or line inputs.

Channel 4 is an analog stereo line-level input that features
a front panel TRS jack to allow easy plug-in of a field recorder

or DJ system (which is summed with a rear panel connector).

Channels 5, 6 and 7 are stereo AES-3 digital inputs with
integral sample rate conversion that accepts sample rates from
32 to 48 kHz.

Any one channel can be set as a Telco input from a phone
hybrid, ISDN or other 2-way communications device. The Telco
channel, set by internal DIPswitches (defined in Table 1 on
page 9), is always removed from the mix-minus output that is

returned to the Telco device.

Each of the seven input channels has these controls:

• Single channel On/Off button (lit by LEDs when On)

• Digital level control (linear faders on the desktop

version; rotary faders on the rack version)

• Function button (Talk on ch. 1, Cue on ch. 2 - 7)

• Program 1 and Program 2 bus assignment buttons

Output Features

The six analog outputs (+4 dBu balanced, -2 dBv unbal­anced) are PGM 1, PGM 2, Room Monitor, Mix-Minus with

talk and Talk to External. The three digital outputs (PGM 1,
PGM 2, Mix-Minus) use a sample rate of 48 kHz (AES-3). An
amplified talent headphone output (1/4" TRS jack) has the
same monitor source as the Room Monitor output.

The Mix-Minus output is a sum of all the channels (post­fader, post-switch) assigned to the same bus as the Telco chan­nel—but minus the Telco channel audio. The mix-minus bus
is identified by the winking Telco bus assignment button. On

the left digital output and the analog output, talkback is added.
The digital right channel is a mix-minus without talk output.

Talkback audio is only active when channel 1 is set as a mic
input. Pressing the Talk button routes the mic—pre-switch

and pre-fader, to both the Talk output and to the Mix-Minus
with talk outputs.

Monitor Features

The monitor section has these controls:

• Monitor/meter source selectors (PGM 1, PGM 2, EXT)

• Digital level controls for the room monitor and talent

headphone outputs (linear faders on the desktop version;
rotary faders on the rack version)

The monitor outputs/meter can have four sources: Program
1, Program 2, an analog External Monitor input or Cue.

The Room Monitor and Headphones faders control the line­level output for a pair of powered room monitor speakers and

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HARRIS CORPORATION

Revision C • 12/05

the output level of the built-in headphone amplifier. The room
monitor output is automatically muted whenever a Mic chan­nel is On (typically channel 1 is set as a mic, but channels 2
and 3 can also be set as mics). The talent/board operator head-

phone jack is next to the Channel 1 controls on the rack ver­sion. It is inset into the left side panel on the desktop version.

Power Supply

A separate “line lump” switching power supply, with three
regulated output voltages, is supplied with both versions of

SMX

d

. The ±15 volt outputs power the analog circuitry, while

a +5 volt output powers the DSP and logic control circuits.

Logic

The 2-way talk interface has External Talk audio and logic
inputs, a Talent/board operator Mic Talk output and Talk Out
Tally. These allow the SMX

ing intercom system, or to function as its own talkback sys­tem by adding an external audio switching relay.

There are three logic connectors on the rear panel:

• 12-pin AMP MOD IV: Logic outputs for a warning
lamp interface, talk tally output and an external talk
logic input.

• 14-pin AMP MOD IV: Logic inputs and outputs for
an optional cabinet-mount Mic Remote Panel
(PRE99-1197 or PRE99-1198) for channel 1 con­trol from a remote talent mic location.

• 15-pin female D-Sub: Ch. 2 - 7 start pulse outputs
and a timer reset command closure.

d

to easily interface with any exist-

Stereo Bargraph Meter

(Displays average or

Average plus Peak)

MONO IN 1 *

EXT. TALK

ANALOG IN 2L *

ANALOG IN 2R *

ANALOG IN 3L *

ANALOG IN 3R *

ANALOG IN 4L

ANALOG IN 4R

AUX IN 4 STEREO

(Front Panel 1/4" TRS)

DIGITAL IN 5

DIGITAL IN 6

DIGITAL IN 7

EXT MONITOR IN L

EXT MONITOR IN R

* DIPSWITCH SET FOR MIC OR LINE FUNCTIONALITY
SRC: SAMPLE RATE CONVERSION
A/D: ANALOG TO DIGITAL CONVERSION

SMXd Block Diagram

Me ter, Monitor,

& Headphone

Source Selection

Audio Routing

& Mixing DSP

Digital to Analog

Converters

Logic I/O

Stereo Bargraph Meter

ANALOG AUDIO

DIGITAL AUDIO

LOGIC

TRS Stereo Input

(alternate source

for Channel 4)

HEADPHONE AMP OUT L
HEADPHONE AMP OUT R

ROOM MONITOR OUT L
ROOM MONITOR OUT R

PROGRAM 1 OUT L (ANALOG)
PROGRAM 1 OUT R (ANALOG

PROGRAM 1 OUT (DIGITAL)

PROGRAM 2 OUT L (ANALOG)
PROGRAM 2 OUT R (ANALOG

PROGRAM 2 OUT (DIGITAL)

MIX MINUS OUT (DIGITAL)

MIX MINUS OUT (ANALOG)

TALKBACK OUT (ANALOG)

EXT. TALLY LOGIC
(C/R Warning, Talk Tally,
Mic Panel Tallies, Start
Pulses, Timer Reset)

EXT. INPUT LOGIC
(Ext. Talk logic input,
Mic Panel Switches)

Tal e nt

Headphones

Jack

Channel controls (x7) with Bus

assign and Cue or Talk buttons, level

control & removable On/Off button lens

Room Monitor

Output level

control

Overview of the Rack Mount model’s

Controls and Features

(Desktop model’s controls are shown on the next page)

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HARRIS CORPORATION

Revision C • 12/05

Tal e nt

Headphones

level control