Lectrosonics SRA User manual

Quick

Start

Guide

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This guide is intended to assist with

initial setup and operation of your

Lectrosonics product.

For a detailed user manual, down-

load the most current

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Camera Slot

Dual UHF Receiver

SRA

SRA5P

Digital Hybrid Wireless®Technology

U.S. Patent 7,225,135

28 jun 12

LECTROSONICS, INC.2

www.lectrosonics.com 3

Digital Hybrid Wireless®

The Lectrosonics Digital Hybrid Wireless®uses innovative technology to

combine the advantages of digital audio with the advantages of analog RF

transmission, thus delivering the superior sound quality of a digital system

and the excellent range of an analog system. A proprietary algorithm encodes

the digital audio information into an analog format which can be transmitted in

a robust manner over an analog FM wireless link. The receiver employs state-

of-the-art ﬁlters, RF ampliﬁers, mixers and detector to capture the encoded

signal and a DSP recovers the original digital audio.

This digital/analog hybrid technique has some very beneﬁcial properties.

Because the information being transmitted is digitally encoded, immunity to

noise is much higher than what a compandor can offer. Because the encoded

audio is sent in analog format, spectral and power efﬁciency and operating

range are not compromised.

Under weak RF conditions, the received signal degrades gracefully, like an

analog system, delivering as much usable audio as possible at maximum

range. Since the audio is free of compandor artifacts, pumping and breathing

problems are also greatly reduced.

LECTROSONICS, INC.4

Quick Start Summary

The following checklist includes the minimum required settings to start using

the receiver.

• Installeitherstand-aloneorcameraslotadapterkit,theantennasand

position the receiver as it will be used (see pages 6,7).

• SettheCOMPAT(compatibility)modeforthetransmitterstobeused(see

page 9).

NOTE:Whenoperatinginthe2-channelmode,alwayssetReceiver2

to a higher frequency than Receiver 1 by least 400 kHz (four standard

steps on the switches).

• Settransmittersonthematchingfrequencies(seetransmittermanual).

• Verifytransmittersaresettothesamecompatibilitymodeasthereceiver

(see transmitter manual).

• Adjusttransmitter/sinputgaintomatchvoicelevelandmicposition(see

transmitter manual).

• Adjustreceiveroutputlevelasneededforthecameraormixerinputlevel

desired (see page 9).

www.lectrosonics.com 5

Front Panel Controls and Functions

DOWN Button

MENU/SELECT

Button

POWER/BACK

Button

UP Button

Receiver 1 Receiver 2

LCD Main Window with two channels shown

Audio

Output

Audio Outputs

Inadditiontotheaudiooutputsontherearpanel,thefrontpanelofthereceiv-

er provides a second set of outputs through a 5-pin connector. For cameras

withonlyoneaudiochannelenabledintheslot,Itallowsbothaudiochannels

to be connected through externals cables.

The TA5M connector provides two balanced outputs with the following pinouts:

Pin 1 Pin 2 Pin 3 Pin 4 Pin 5

Shields CH1+ CH1– CH2+ CH2–

LCD Screen

Abacklit,graphics-typeLiquidCrystalDisplayisusedtosetupandmonitor

the receiver. The Main Window shown here is used during normal operation,

to display RF and audio levels, transmitter battery status, pilot tone status and

diversity activity for both receivers.

MENU/SEL Button

This button is used to select menu items and enter setup screens during

setup.

PWR/BACK Button

PressthePWR/BACKswitchtoturnthepoweron.Pressandholdituntilthe

displaygoesblanktoturnpoweroff.Italsofunctionsasa“back”buttonwhile

navigating the various menus and setup screens to return to the previous

screen or menu item.

Thermware“remembers”whetherthereceiverwasturnedonoroffafter

power is disconnected, and it returns to that state when power is restored.

This allows the receiver to power up and down as the camera is turned on

and off.

PressthePWR/BACK buttonfromtheMainWindowtobrieydisplaythe

external power voltage.

UP/DOWN Arrow Buttons

TheUPandDOWNarrowbuttonsareusedtoselectvariousoptionsand

adjust values in the setup screens, and provide secondary functions such as

locking out the panel to guard against accidental changes.

LECTROSONICS, INC.6

Installing Rear Panel Adapters

Installationoftherearpaneloutput/poweradaptersisthesameforallmodels.

Panels are held in

place by two phillips

head screws on the

sides of the housing.

Connections

between the panel

and main circuit

board are made via

miniature mating

connectors.

Align the mating

connectors and slide

the panel straight

into the housing until

the screw holes align

with the housing.

www.lectrosonics.com 7

Mounting and Orientation

Installationintotheslotonavideocameraplacestheantennasinanoptimal

vertical position away from the camera body.

When used with non-slot cameras, as depicted in the diagram below, one or

two receivers can be positioned in a variety of locations around the camera

bodyusingtheVelcroandSRaSLEEVEmountingoptions.

Mounting the receiver horizontally on the side of a camera can seriously

reduce the operating range of the wireless system.

For maximum operating range, the antennas should be vertical and above

the camera body. While it may be convenient, mounting the receiver horizon-

tally on the side of the camera can seriously reduce the operating range of

the wireless system.

The receiver provides stand-alone operation

with the battery sled adapter and mounting

sleeve. (optional) It can be mounted in any

position with Velcro, or in horizontal and vertical

positions using the mounting foot.

LECTROSONICS, INC.8

Main Window (LCD)

RF Level

Audio Level

Transmitter

Battery Level

Pilot Tone

Indicator

Receiver 1 Receiver 2 Diversity

Activity

NOTE:WhentheRATIODIVERSITY

mode is selected, both receivers

are combined to pick up the same

transmitter, so the Main Window will

display a single audio channel.

Receiver 2 RF

Level

Audio

Level

Transmitter Battery

Level

Receiver 1 RF

Level

The Main Window displays information concerning the condition of the Pilot

Tone, antenna phase, RF and audio signal levels and battery conditions for

both the receiver and the associated transmitter.

PressingtheSEL/SELbuttonaccessestheSELselectionsforsettingupthe

receiver and searching for clear frequency channels.

www.lectrosonics.com 9

Navigating the LCD

HYB

SETUP

(item)

180

652.800

2AF

657.500

TUNING

BACK

Receiver 1

Pilot Tone

ON\OFF

Hold MENU and

hold DOWN

Hold MENU

and hold UP

Mute Audio on

Receiver 1

Mute Audio on

Receiver 2

Press

UP/DOWN

to select

Press

UP/DOWN

to adjust

RECEIVER 1

RECEIVER 2

SEL

BACK

SEL

BACK

SEL

SCANNING

STARTS

SEL

SCANNING

STOPS

Press

SEL to

select

receiver

Press UP/DOWN

to scroll

frequency

Press both

UP and DOWN

to ZOOM

Press UP/DOWN

to scroll

frequency

BACK

Setup Window

Main Window

Receiver 1

Receiver 2

Press UP/DOWN to change frequency

DIVMOD

RATIO

Press

UP/DOWN

to select

NOTE: Main Window will look like this

when the RATIO DIV mode is selected.

LEVEL LEVEL

DOWN

SEL

BACK

COMPAT

HYB HYB HYB

COMPAT

BACK

ZOOM GRAPHIC

BACK

SEL

BACK

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

SEL

BACK

TUNING TUNING

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

NOR a

NOR

Press

SEL to

select

receiver

Press

SEL to

select

receiver

SEL

BACK

SmtNR SmtNR

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

FULNOR

Press

SEL to

select

receiver FUL

NOR

LEVEL

SETUP

SCAN

SETUP

DIVMODE

SETUP

COMPAT

SETUP

SmtNR

SETUP

PHASE

SETUP

TXBAT

SETUP

MIXMODE

SETUP

TONE

SETUP

SEL

BACK

PHASE PHASE

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

Press

SEL to

select

receiver

SEL

BACK

TXBAT TXBAT

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

Press

SEL to

select

receiver

SEL

BACK

MIXMODE

Press

UP/DOWN

to select

SEL

BACK

TONE?

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

Press

SEL to

select

receiver

00+05

Tone will be enabled

when level is set with

the UP/DOWN buttons

TONE?

00+05

LVL 1K

RECEIVER 1

00+05

BACK

DOWN

RATIO 80

652.800

When the receivers are combined in the

RATIO DIVERSITY mode, the frequency

screen will look like this.

MIXBOTH

DOWN

MIXTRIM

SETUP

SEL

BACK

MIXTRIM

00+05

MIXTRIM

Press

SEL to

select

receiver

00 +05

Press

UP/DOWN

to select

Receiver 2

Pilot Tone

ON/OFF

Hold MENU and

press UP

momentarily

Hold MENU and

press DOWN

momentarily

9V 9V 9V

IMPORTANT:

FREQ.

WARNING

Performance will be degraded if

Receiver 1 is set 4.2 to 4.8 MHz higher

than Receiver 2. The LCD will also flash

this message periodically.

Receiver 2 should always be set to a higher frequency

than Receiver 1 by at least 400 kHz (four standard steps).

NOTE:Pressthe

BACKbuttonfrom

the Main Window

tobrieydisplay

the external

power supply

voltage.

NOTE:Toresetthetimer,setthe

TXBAT mode to anything other

than9VTorAAT,thenbackto

the desired mode.

NOTE:Thissettingdoesnot

appearwhentheMIXMODE

issettoDIRECT

LECTROSONICS, INC.10

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