Lectrosonics SRc-941 Manuel utilisateur

Quick

Start

Guide

Fill in for your records:

Serial Number:

Purchase Date:

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

version at:

www.lectrosonics.com/manuals

Camera Slot Dual UHF Receiver

Digital Hybrid Wireless®Technology

U.S. Patent 7,225,135

SRC-941

23 May 2018

LECTROSONICS, INC.2

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. The result delivers 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 wire-

less 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.

www.lectrosonics.com 3

Quick Start Summary

The following checklist includes the minimum required settings to start using

the receiver.

• Install either a battery sled or camera slot adapter kit (see pages 5-6).

• Connect power to the receiver (see page 6-7).

• Set the DIVMODE for single or dual channel operation (see pages 8-9).

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

pages 8-9).

• Find clear operating frequencies for one or both receivers (see page 10).

• 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 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 pages 8-9).

IMPORTANT:

FREQ.

WARNING

Performance will be degraded if

Receiver 2 is set 4.2 to 4.8 MHz higher

than Receiver 1. The LCD will also flash

this message periodically.

LECTROSONICS, INC.4

Audio Outputs

Audio outputs and the power inlet are located on the rear panel, accessed by

a variety of different adapters.

LCD Screen

A backlit, graphics-type LCD is used to set up and monitor the receiver. The

Main Window shown above 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.

IR (Infrared) Sync

An IR Sync Port is used for quick setup with transmitters that offer this feature.

Settings for frequency, step size, compatibility mode and talk back are trans-

ferred from receiver to transmitter via the IR ports.

NOTE: Selected compatibility mode and talk back will only sync if they

are available options on the transmitter you are syncing with.

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 ﬁrmware “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 or external sup-

ply is turned on and off.

Press the PWR/BACK button from the Main Window to brieﬂy display the

external power voltage.

Front Panel Controls and Functions

DOWN

Button

MENU/SELECT

Button

POWER/

BACK

Button

UP Button

Receiver 1 Receiver 2

IR Sync Port

www.lectrosonics.com 5

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.

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.

LECTROSONICS, INC.6

Battery Adapters

Battery sled adapters conﬁgure the receiver for standalone use or to provide

battery backup power. Several options are available:

• SRBATTSLEDTOP

• SRBATTSLEDBOTTOM

• SR9VBP (inserts into the SLED adapters)

SRBATTSLEDTOP

SRBATTSLEDBOTTOM

The battery sled adapters accept L and M type video camera rechargeable

batteries and the optional SR9VBP 9 volt battery case.

L or M type video

camera batteries

mount directly onto

the battery sled

SR9VBP

battery

case for

two 9 volt

batteries

The battery sled adapters do not include charging circuitry. Batteries must

be charged with their respective chargers. The adapters include an integral

circuit that automatically selects between the battery and the external source,

whichever delivers the highest voltage.

www.lectrosonics.com 7

External Power Supply

DCR15/4AU

Power supply with a standard C14 inlet and

locking LZR coaxial output connector; 100-240

VAC in, 15 VDC regulated output; 4A max.

Main Window (LCD)

RF Levels Audio Level

Transmitter

Battery Level

Pilot Tone

Indicator

Receiver 1 Receiver 2 Diversity

Activity

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.

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 1

RF Level

Receiver 2

RF Level

Audio

Level

Transmitter

Battery Level

Pilot Tone

Indicator

Pressing the MENU/SEL button accesses the menus and screens for setting

up the receiver and searching for clear frequency channels.

LECTROSONICS, INC.8

Navigating the LCD

Note: Press the BACK button from the Main Window to brieﬂy display

the external power supply voltage.

SETUP

(item)

101

941.600

27A

953.700

BACK

Receiver 1

Pilot Tone

ON\OFF

Hold MENU and

hold DOWN for

1 sec. or more

Hold MENU

and hold UP

for 1 sec. or

Mute Audio on

Receiver 1

Mute Audio on

Receiver 2

Press

UP/DOWN

to select

BACK

Setup Screen

Main Window

Receiver 1

Receiver 2

Press UP/DOWN to

change frequency

Press UP/DOWN to change frequency

When DIVMODE is set to RATIO the

frequency screen will look like this.

Receiver 2

Pilot Tone

ON/OFF

Hold MENU and

press UP

momentarily

Hold MENU and

press DOWN

momentarily

941

Press

UP/DOWN

to adjust

RECEIVER 1

00 00 00

RECEIVER 2

SEL

BACK

SEL

LEVEL LEVEL

BACK

LEVEL

SETUP

941

: 01

941.600

Ratio

Mode Block Freq hex code

Freq MHz

SEL

BACK

DEFAULT

SETUP

Ratio

Switched

RESET– –

DEFAULT Press

DOWN to

continue SURE?

ARE YOUPress

MENU/SEL

to reset

DOWN

SEL

BACK

SMARTUNE

SETUP

DOWN

SEL

BACK

IR SYNC

SETUP

SEL

BACK 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

DOWN

BACK BACK

SCAN

SETUP

DIVMOD

RATIO

Press

UP/DOWN

to select

DOWN

SEL

BACK

DIVMODE

SETUP

DOWN

SEL

BACK

TALKBACK

SETUP

SEL

BACK

COMPAT

RECEIVER 1

Press

UP/DOWN

to select

receiver

COMPAT

SETUP

DOWN

SEL

BACK

RECEIVER 1 RECEIVER 2

TUNING

NOR

Press

SEL to

select

receiver

DOWN

SEL

BACK

STEPSIZE

SETUP

DOWN

SEL

BACK

RECEIVER 1 RECEIVER 2

SmtNR

FUL

NOR

Press

SEL to

select

receiver

SmtNR

N/A

OFF

SmtNR

SETUP

DOWN

PHASE

SETUP SEL

BACK

PHASE PHASE

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

Press

SEL to

select

receiver

TXBAT

SETUP SEL

BACK

TXBAT TXBAT

RECEIVER 1

Press

UP/DOWN

to select

Press

SEL to

select

receiver

9V AA AA

DOWN

TONE

SETUP 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

TUNING

SETUP

TUNE

SMART 1

BAND

TX 1

Press

UP/DOWN

to select

band

Press

MENU/SEL

to start

scanning SYNC

1Press

DOWN to IR

sync TX 1

Press

MENU/SEL

to continue

prompts to

scan and set

up TX 2

SYNC 1

Press UP to sync TX 1

Press DOWN to sync TX 2

TALKBACK

OFF

Press

UP/DOWN

to select

NU HYBR

Press

MENU/SEL

to highlight

mode

COMPAT

RECEIVER 2

IFB SER

Press

UP/DOWN

to select

mode

Press

UP/DOWN

to select

mode

STEPSIZE

100 25

Press

MENU/SEL

to highlight

receiver

Press

UP/DOWN

to select

step size

Press

UP/DOWN

to select

mode

MIXMODE

SETUP SEL

BACK

MIXMODE Press

UP/DOWN

to select

MIXBOTH

DOWN

STEPSIZE

100 25

TUNING

NOR

DOWN

MIXTRIM

SETUP

SEL

BACK

MIXTRIM

00 +05

Press

UP/DOWN

to select

value

Press

SEL to

select

receiver

941

SCANNING

BEGINS

941

www.lectrosonics.com 9

SETUP

(item)

101

941.600

27A

953.700

BACK

Receiver 1

Pilot Tone

ON\OFF

Hold MENU and

hold DOWN for

1 sec. or more

Hold MENU

and hold UP

for 1 sec. or

Mute Audio on

Receiver 1

Mute Audio on

Receiver 2

Press

UP/DOWN

to select

BACK

Setup Screen

Main Window

Receiver 1

Receiver 2

Press UP/DOWN to

change frequency

Press UP/DOWN to change frequency

When DIVMODE is set to RATIO the

frequency screen will look like this.

Receiver 2

Pilot Tone

ON/OFF

Hold MENU and

press UP

momentarily

Hold MENU and

press DOWN

momentarily

941

Press

UP/DOWN

to adjust

RECEIVER 1

00 00 00

RECEIVER 2

SEL

BACK

SEL

LEVEL LEVEL

BACK

LEVEL

SETUP

941

: 01

941.600

Ratio

Mode Block Freq hex code

Freq MHz

SEL

BACK

DEFAULT

SETUP

Ratio

Switched

RESET– –

DEFAULT Press

DOWN to

continue SURE?

ARE YOUPress

MENU/SEL

to reset

DOWN

SEL

BACK

SMARTUNE

SETUP

DOWN

SEL

BACK

IR SYNC

SETUP

SEL

BACK 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

DOWN

BACK BACK

SCAN

SETUP

DIVMOD

RATIO

Press

UP/DOWN

to select

DOWN

SEL

BACK

DIVMODE

SETUP

DOWN

SEL

BACK

TALKBACK

SETUP

SEL

BACK

COMPAT

RECEIVER 1

Press

UP/DOWN

to select

receiver

COMPAT

SETUP

DOWN

SEL

BACK

RECEIVER 1 RECEIVER 2

TUNING

NOR

Press

SEL to

select

receiver

DOWN

SEL

BACK

STEPSIZE

SETUP

DOWN

SEL

BACK

RECEIVER 1 RECEIVER 2

SmtNR

FUL

NOR

Press

SEL to

select

receiver

SmtNR

N/A

OFF

SmtNR

SETUP

DOWN

PHASE

SETUP SEL

BACK

PHASE PHASE

RECEIVER 1 RECEIVER 2

Press

UP/DOWN

to select

Press

SEL to

select

receiver

TXBAT

SETUP SEL

BACK

TXBAT TXBAT

RECEIVER 1

Press

UP/DOWN

to select

Press

SEL to

select

receiver

9V AA AA

DOWN

TONE

SETUP 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

TUNING

SETUP

TUNE

SMART 1

BAND

TX 1

Press

UP/DOWN

to select

band

Press

MENU/SEL

to start

scanning SYNC

1Press

DOWN to IR

sync TX 1

Press

MENU/SEL

to continue

prompts to

scan and set

up TX 2

SYNC 1

Press UP to sync TX 1

Press DOWN to sync TX 2

TALKBACK

OFF

Press

UP/DOWN

to select

NU HYBR

Press

MENU/SEL

to highlight

mode

COMPAT

RECEIVER 2

IFB SER

Press

UP/DOWN

to select

mode

Press

UP/DOWN

to select

mode

STEPSIZE

100 25

Press

MENU/SEL

to highlight

receiver

Press

UP/DOWN

to select

step size

Press

UP/DOWN

to select

mode

MIXMODE

SETUP SEL

BACK

MIXMODE Press

UP/DOWN

to select

MIXBOTH

DOWN

STEPSIZE

100 25

TUNING

NOR

DOWN

MIXTRIM

SETUP

SEL

BACK

MIXTRIM

00 +05

Press

UP/DOWN

to select

value

Press

SEL to

select

receiver

941

SCANNING

BEGINS

941

LECTROSONICS, INC.10

Scanning for Clear Frequencies

Scan Window Zoom View Window

Press both UP and DOWN

arrows on control panel to

switch to the Zoom View

Press the BACK

button to return

to the Scan View

Window

941

Block

Dashed line (cursor)

shows the currently

selected receiver

RF activity

level

Previously tuned

frequency Freq

in hex

Cursor (center bar)

Freq in

hex

941

Block

First, turn off all of the transmitters you intend to use with the receiver.

Navigate to the SETUP/SCAN screen and press the MENU/SEL button to

start the scanner. The display will switch to the Scan Window (see illustration

above) and start scanning immediately. Allow the receiver to scan across the

entire tuning range at least once, then press the MENU/SEL button to stop

the scanning.

Scroll through the screen with the UP and DOWN buttons and ﬁnd a frequen-

cy where no (or very weak) RF signals are present. Press the PWR/BACK

button to set the receiver to this new frequency.

Press both the UP and DOWN buttons at the same time to switch to the

Zoom View Window (see illustration above). In this view, the cursor remains

ﬁxed in the center of the screen and the background scrolls behind it. The

frequency can be stepped up and down in 100 kHz increments using the UP

and DOWN arrow buttons.

When the receiver is conﬁgured for SWITCHED diversity (dual channel

mode), two cursors will appear when the scanning is stopped. Press MENU/

SEL to toggle between the two receivers. The cursor for the selected receiver

will be a dashed rather than solid line. Select each receiver and use the UP

and DOWN buttons to locate a frequency with no (or very weak) RF activity.

Keep the frequencies of the two receivers at least 700 kHz apart to minimize

de-sensing (short range) issues. This spacing is a “worst case” approximation

assuming the transmitters are about 25 feet from the receiver antennas.

Data gathered during a scan is stored until it is intentionally erased or the

power is turned off. Previous data will remain and subsequent scans can be

made to search for additional signals or to accumulate higher peaks.

To clear the scan memory and screens, press the back button several times to

return to the Main Window, then press and hold the PWR/BACK button brieﬂy.

As soon as Powering off... appears on the display, release the button. The

receiver will remain turned on, and the scan data will be erased.

Set your transmitter to the same frequency as shown on the receiver display,

turn the transmitter on and verify that a strong RF signal is present.

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