Lectrosonics SRC5P Users Manual

SRc5P & SRc

Camera Slot Dual UHF Receiver

Featuring

Digital Hybrid Wireless® Technology

INSTRUCTION MANUAL

U.S. Patent 7,225,135

Quick Start Summary

The following checklist includes the minimum required
settings to start using the receiver.

• Install either a battery sled, camera slot adapter or
other power source (see pages 9-13).

• Connect power to the receiver (see pages 11, 12,

15).

• Set the DIVMODE for single or dual channel opera­tion (see page 21).

• Set the COMPAT (compatibility) mode for the trans­mitters to be used (see page 21).

• Find clear operating frequencies for one or both re­ceivers using SmartTune or manual scanning (see
pages 24, 25).

• 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 LEVEL on
page 21).

IMPORTANT:

Performance will be degraded if

FREQ.

WARNING

Receiver 2 is set 4.2 to 4.8 MHz higher
than Receiver 1. The LCD will also flash
this message periodically.

Fill in for your records:

Serial Number:

Purchase Date:

Rio Rancho, NM, USA
www.lectrosonics.com

SRc5P and SRc Dual Receivers

2

Table of Contents

Wideband Tuning Range ........................................................4

Model Differences ................................................................... 4

SRc .......................................................................................4

SRc5P ................................................................................... 4

General Technical Description ..............................................5

Front Panel Controls and Functions .....................................8

Audio Outputs .......................................................................8

LCD Screen ..........................................................................8

MENU/SELECT Button ......................................................... 8

PWR/BACK Button ...............................................................8

IR (Infrared) Sync ...................................................................8

UP/DOWN Arrow Buttons .....................................................8

Rear Panel and Adapters .......................................................8

Camera Slot Adapters ........................................................... 9

Installing Camera Slot Adapters ...........................................9

Adapters for Stand-Alone Use ............................................10

Installing Rear Panel Adapters............................................10

Replacement Screw Kits .....................................................10

Battery Adapters ................................................................. 11

Installing the SRBATTSLED ................................................11

SR9VBP 9 Volt Battery Adapter ..........................................12

SRSLEEVE mounting adapter ............................................ 12

SRHARDWARE mounting adapter kit ................................. 12

Audio Output Cables and Connectors .................................14

External Power Cables ........................................................15

Mounting and Orientation .................................................... 16

AMJ Rev. A Jointed Antenna ...............................................17

LCD Main Window.................................................................18

Main Window .......................................................................19

Frequency Screen ...............................................................19

Setup Screens ....................................................................19

Locking and Unlocking the

Front Panel Controls ...........................................................19

LCD Backlight Setup ...........................................................19

Battery Timer Reset ............................................................19

Navigating the LCD ..............................................................20

Menu Item Descriptions ...................................................... 21

Front Panel Shortcuts ......................................................... 23

Accessing Block 606 ...........................................................23

Finding Clear Frequencies with SmartTune

Finding Clear Frequencies with Manual Scanning ............ 25

Scan Window ......................................................................25

Zoom View Window .............................................................25

Pre-coordinated Frequencies ..............................................26

Frequency Coordination ......................................................27

Multi-channel System Checkout .........................................27

Troubleshooting .................................................................... 28

Specifications and Features ................................................ 30

Service and Repair ............................................................... 31

Returning Units for Repair ..................................................31

Attestation of Conformity ..................................................... 32

Declaration of Conformity ...................................................33

TM

.................... 24

UHF Digital Hybrid Wireless

®

3

SRc5P and SRc Dual Receivers

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 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.

®

Wideband Tuning Range

The increased congestion in the UHF television fre­quency bands has driven the demand for extended tun­ing ranges in wireless microphone equipment. The goal
is to be able to find empty places in the RF spectrum
where there is little or no interference. The logic behind
this thinking is valid except for the fact that a wideband
tuning range allows a greater amount of RF energy
from all sources to enter the receiver, This excessive
amount of RF energy can easily be enough to over­whelm the receiver and shorten the operating range or
cause noise and dropouts.

To allow a wide tuning range and preserve the perfor­mance of a narrowband receiver, the SRc Series design
employs tracking filters in the front-end section to block
RF energy above and below the tuned frequency. The
filter automatically adjusts to stay centered over the
operating frequency and significantly suppresses out of
band RF signals.

Tracking Filters Suppress Out-of-band Signals

Model Differences

SRc

This is the basic receiver with audio outputs on the rear
panel only.

SRc5P

An additional audio output is provided next to the front
panel for use with cameras that have only one audio
input in the mounting slot. When the receiver is used
outside of a camera, this extra audio output can be
used to feed a recorder or IFB transmitter while the rear
panel audio outputs feed a mixer or camera.

4

LECTROSONICS, INC.

General Technical Description

Ref. Osc

Splitter

Phase

combiner

Mixer

IF

amp

SAW

filter

SAW

filter

IF

amp

Rx IC

250 kHz

RSSI

Window

detect

Audio 1

Pulse

detector

1st

VCO

2nd

VCO

PLL

Splitter

Mixer

IF

amp

SAW

filter

SAW

filter

IF

amp

Rx IC

350 kHz

RSSI

Window

detect

Audio 2

Pulse

detector

1st

VCO

2nd

VCO

PLL

Receiver 1

Receiver 2

High side
injection

High side
injection

SRC Dual Receiver RF Board

Phase

combiner

248.450
MHz

243.950
MHz

BPF

LNA

LNA

Tracking

Tracking

µP

µP

BPF

LNA

LNA

Tracking

Tracking

LCD

Audio PCB Block Diagram

Keypad

To both PLL

To phase switches

+3.3V

V Reg

Power

(from RF PCB)

Fuse

display

µP

On/O

DC-DC

Memory

Audio 1
Audio 2

–5V

conv

Ref xtal

DSP

+5V

Codec

RF PCB Block Diagram

Audio amps

DAC

+3.3V

DC-DC

conv

sync

DC-DC

conv

Osc

+1.6V

DC-DC

conv

UHF Digital Hybrid Wireless

+30V

µP

digital

atten

+5V

+5V

CH 1

Digital pot

Digital pot

µP

polarity

CH 2

audio switch

+5V

+5V

audio switch

Diode

protected

outputs

50

+

5k

5k

5k

5k

Hi

Com

Lo

–

50

2

1

4

50

+

Hi

Com

Lo

–

50

®

3
5

The design consists of two separate receivers built into
a single, ultra compact housing with interchangeable
adapters for video camera wireless receiver slots and
stand-alone use. Digital Hybrid Wireless® technology
provides superb, compandor-free audio quality and
compatibility with other wireless systems. The RF per­formance is extremely stable over a very wide tempera­ture range, making the receiver perfectly suited to the
rough environmental conditions in field production.

The front panel features a menu-driven LCD interface
and four membrane switches used to view and alter set­tings. Audio outputs are provided on the rear panel for
camera slots or other audio devices, on the SRC model,
and the SRc5P, model provides a second audio output
on the front panel through a 5-pin TA Series connector.

A built-in spectrum analyzer scans across the tuning
range of the receiver to simplify finding clear operating
frequencies.

Rio Rancho, NM

Osc

sync

The dual receiver architecture allows two different types
of diversity reception:

SmartDiversity™ allows each receiver to run indepen-

dently to provide two separate audio channels. The
algorithm analyzes both the incoming RF level and the
rate of change in RF level to determine the optimum
timing for antenna phase switching. The system also
employs “opportunistic switching” to analyze and then
latch the phase in the best position during brief squelch
activity.

Ratio Diversity blends the audio outputs of both receiv­ers in a seamless manner to produce a single audio
output. A panning circuit blends more signal from the re­ceiver with the stronger RF signal over a wide RF level
range to anticipate and eliminate dropouts long before
they occur. When a good RF signal is present at both
receivers and the audio is blended equally, the signal­to-noise ratio is increased by 3 dB.

5

SRc5P and SRc Dual Receivers

TUNING RANGE

Three Block Tuning Range

The SRc receiver tunes across a range of over 76 MHz.
This tuning range covers three standard Lectrosonics
frequency blocks.

BLOCK

Tuning ranges are available covering standard blocks as
follows:

Band Blocks Covered Freq. (MHz)

A1 470, 19, 20 470.100 - 537.575

B1 21, 22 23 537.600 - 614.375

B2 22, 23, 24 563.200 - 639.975

Block
606

C1 24, 25, 26 614.400 - 691.175

C2 25, 26, 27 640.000 - 716.775

To simplify backward compatibility with earlier Digital
Hybrid Wireless
sented along with frequencies in LCD screens.

23, 24

BLOCK

®

equipment, block numbers are pre-

BLOCK

606.000 - 631.500

RF Front-End with Tracking Filter

A wide tuning range is helpful in finding clear frequen­cies for operation, however, it also allows a greater
range of interfering frequencies to enter the receiver.
The UHF frequency band, where almost all wireless
microphone systems operate, is heavily populated by
high power TV transmissions. The TV signals are im­mensely more powerful than a wireless microphone
transmitter signal and will enter the receiver even when
they are on significantly different frequencies than the
wireless system. This powerful energy appears as noise
to the receiver, and has the same effect as the noise
that occurs with extreme operating range of the wireless
system (noise bursts and dropouts). To alleviate this
interference, front-end filters are needed in the receiver
to suppress RF energy below and above the operating
frequency.

The SRc receiver employs a variable frequency, track­ing filter in the front-end section (the first circuit stage
following the antenna). As the operating frequency is
changed, the filters re-tune in fine increments to stay
centered over the selected carrier frequency.

BLOCK

BLOCK

BLOCK

IF Amplifiers and SAW Filters

The first IF stage employs two SAW (surface acoustic
wave) filters. The use of two filters significantly increas­es the depth of filtering while preserving sharp skirts,
constant group delay, and narrow bandwidth. Though
expensive, this special type of filter allows primary filter­ing as early as possible, at as high a frequency as pos­sible, before high gain is applied, to deliver maximum
image rejection. These filters are made of quartz, and
they are very temperature stable.

In receiver 1, the signal is converted to 248.950 MHz
in the first mixer stage, then passed through two SAW
filters. After the SAW filters, the signal is converted to
350 kHz and then the majority of the gain is applied.

In receiver 2, the same conversions take place at differ­ent frequencies: first to 243.950 MHz, then to 250 kHz.

Although these IF frequencies are unconventional in a
wide deviation (±75 kHz) system, the design provides
excellent image rejection.

Digital Pulse Counting Detector

Following the IF section, the receiver uses an elegantly
simple, yet highly effective digital pulse counting detec­tor to demodulate the FM signal to generate the audio,
rather than a conventional quadrature detector. This
unusual design eliminates thermal drift, improves AM
rejection, and provides very low audio distortion. The
output of the detector is fed to the microprocessor
where a window detector is employed as part of the
squelch system.

DSP-Based Pilot Tone

The Digital Hybrid system design uses a DSP gener­ated ultrasonic pilot tone to reliably mute the audio
when no RF carrier is present. The pilot tone must be
present in conjunction with a usable RF signal before
the audio output will be enabled. 256 pilot tone frequen­cies are used across each 25.6 MHz block within the
tuning range of the system. This alleviates erroneous
squelch activity in multichannel systems where a pilot
tone signal can appear in the wrong receiver via IM
(intermodulation).

The pilot tones are repeated with each successive 25.6
MHz increment across the tuning range of units that
tune across a 3-block band. These units can tune in ei­ther 25 kHz or 100 kHz steps. The pilot tones increment
in 100 kHz steps, so the pilot tone will be the same for
all four adjacent frequencies in each 100 kHz incre­ment. For example, 550.100, 550.1256, 550.150 and

550.175 MHz will all have the same pilot tone.

Pilot tones are also provided for legacy equipment and
some models from other manufacturers.

In the front-end circuitry, a tuned filter is followed by an
amplifier and then another filter to provide the selectivity
needed to suppress interference. This unique filter de­sign allows a wide tuning range and retains the sensitiv­ity needed for extended operating range.

6

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

®

SmartSquelch

A DSP-based algorithm called SmartSquelchTM optimizes
the receiver performance in very weak signal conditions.
The RF level and supersonic noise in the audio are con­tinuously monitored to determine the appropriate noise
reduction needed and the point at which squelch (com­plete muting of the audio) is necessary.

As the RF level decreases and supersonic noise in the
signal begins to increase, a variable knee, high frequency
roll-off filter is applied to suppress high frequency noise.
The filtering action moves in and out smoothly to avoid
abrupt changes that could be audible. When the RF signal
becomes so weak that the receiver can no longer deliver
usable audio, the squelch will activate.

SmartDiversity

Microprocessor controlled antenna phase combin­ing is used for diversity reception. When the incoming
RF level drops to a certain point, the phase (polarity)
of one antenna is reversed and the resulting level is
compared with the one in the previous state. If the level
has increased, the phase is retained. If the level has
decreased, the phase is reversed back to the previous
state.

The logic behind this design is based upon the fact that
two antennas mixed in phase will deliver a stronger
signal than either antenna by itself. If the antennas are
spaced more than a few inches apart, the signals arriv­ing at them will be non-correlated (diverse), to effec­tively deal with multi-path dropouts.

™

™

Turn On and Turn Off Delays

A brief delay is applied when the receiver is powered up
or down to prevent audible noise such as a thump, pop,
click or other transient noise.

Test Tone

To assist in matching the audio levels of equipment con­nected to the receiver, a 1 kHz audio test tone genera­tor is provided, with an output level adjustable from -50
to +5 dBu in 1 dB increments.

The tone simulates the audio output with a steady sig­nal at full modulation, making it easy to adjust the level
to precisely match the optimal level for the connected
device and maximize the signal to noise ratio of the
system.

Smart Noise Reduction (SmartNR™)

Note: The SmartNR setting is user selectable only in
the Digital Hybrid compatibility mode. In other modes,
noise reduction is applied in such a way as to emulate
the original analog system as accurately as possible
and is not user adjustable.

The wide dynamic range of digital hybrid technology,
combined with flat response to 20 kHz, makes it pos­sible to hear the -120 dBV noise floor in the mic pre­amp, or the (usually) greater noise from the microphone
itself. To put this in perspective, the noise generated
by the recommended 4k bias resistor of many electret
lavaliere mics is –119 dBV and the noise level of the mi­crophone’s electronics is even higher. In order to reduce
this noise the receiver is equipped with a “smart” noise
reduction algorithm called SmartNRTM, which removes
hiss without sacrificing audio high frequency response.

SmartNR
the audio signal that fit a statistical profile for random­ness or “electronic hiss.” Because it is much more than
a sophisticated variable low pass filter, the transparency
of the audio signal is preserved. Desired high frequency
signals having some coherence are not affected, such
as speech sibilance and tones.

SmartNRTM algorithm has three modes, selectable
from a user setup screen. The optimal setting for each
application is subjective and is normally selected while
simply listening.

• OFF defeats noise reduction and complete trans-

• NORMAL applies enough noise reduction to re-

• FULL applies enough noise reduction to remove

TM

works by attenuating only those portions of

parency is preserved. All signals presented to the
transmitter’s analog front end, including any faint
microphone hiss, will be faithfully reproduced at the
receiver output.

move most of the hiss from the microphone preamp
and some of the hiss from lavaliere microphones.
The noise reduction benefit is significant in this
position, yet the degree of transparency maintained
is exceptional.

most of the hiss from nearly any signal source
of reasonable quality and some high frequency
environmental noise, assuming the input gain is set
properly at the transmitter.

LCD Display

Setup and monitoring is done through the LCD display
on the control panel. The built-in backlight for view­ing in dimly lit environments can be set to remain on
for 30 seconds, 5 minutes or to remain on constantly.
The characters and background on the display can be
inverted as desired for easy viewing in brightly or dimly
lit environments.

Rio Rancho, NM

7

SRc5P and SRc Dual Receivers

Front Panel Controls and Functions

Receiver 1 Receiver 2

MENU/SELECT

Button

Secondary

Audio

Output

POWER/BACK

Button

Audio Outputs

Audio outputs and the power inlet are located on the
rear panel, accessed by a variety of different adapters.
A second set of audio outputs is provided next to the
front panel on the “5P” version for use with cameras
that have only one audio channel enabled in the slot.
One channel can feed the connector in the camera slot,
and the second channel can be connected to the ex­ternal audio jack on the camera with a cable. When the
receiver is used outside of a camera, the 5-pin jack can
be used to feed audio to a recorder, IFB transmitter or
camera while the others feed the main production mixer.

The front panel 5-pin connector (TA5M type) 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 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.

IR Sync Port

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 transferred
from receiver to transmitter via the IR ports.

NOTE: Selected compatibility modes and talk back
will only sync if they are available options on the
transmitter you are syncing with.

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.

Rear Panel and Adapters

Several different panel adapters are available to config­ure the receiver for use with popular camera slots and
for stand-alone use. The adapters are retained by two
screws through the side panel of the housing, making
them easy to install.

UP Button

DOWN Button

MENU/SELECT 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 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 external sup­ply is turned on and off.

Press the PWR/BACK button from the Main Window to
briefly display the external power voltage. Press it again
to display the transmitter battery voltages. A third press
returns to the Main Window.

8

Power and audio connections are made through mating
connectors on the adapter and receiver circuit boards.

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

JMP-1

1

2

RX ON (REMOTE)

UART TX

UART RX

UART TX

UART RX

CH1 AUDIO (+) OUT (HOT)

DB-25

EXTERNAL POWER GND

CH1 AUDIO (+) OUT (HOT)

CH1 AUDIO (–) OUT (COLD)

CH1 AUDIO (–) OUT (COLD)

EXTERNAL POWER GND

RX ON (REMOTE)

CH1 AUDIO GND (SHIELD)

CH1 AUDIO GND (SHIELD)

CH2 AUDIO (+) OUT (HOT)

CH2 AUDIO (+) OUT (HOT)

CH1 AUDIO GND (SHIELD)

CH1 AUDIO GND (SHIELD)

CH2 AUDIO (–) OUT (COLD)

CH2 AUDIO (–) OUT (COLD)

®

Camera Slot Adapters

SRSUPER

SRSNY

Adapter kit for
Unislot® camera
slots such as those
provided on Ikega­mi® and Panasonic®
cameras, as well as
the SL-6 by Sound
Devices®.* Includes
bezel, hardware and
rear panel DB25
connector wired for
power and audio
connections.

Adapter kit for
Sony® camera
slots,* includes be­zel, hardware and
rear panel DB15
connector wired for
power and audio
connections.

Installing Camera Slot Adapters

SRSUPER Adapter

Thread two short
screws through the
recessed tabs on the
adapter and slide
it onto the receiver
housing. Thread two
short screws through
the tabs on the
receiver flange as
shown.

On the opposite
side, thread two long
screws through the
tabs on the receiver
flange, then align
them with the tabs
on the adapter.

Slide the adapter
up and tighten the
retaining screws
to secure it to the
receiver flange.

The four lower
screws attach to the
camera body.

SRSNY Adapter

Two different types of screws are used to attach the
receiver flange and the adapter.

Rio Rancho, NM

* UniSlot® is a trademark of Ikegami Tsushinki Co., Ltd.

®

Ikegami
Panasonic
Sony

Sound Devices

is a registered trademark of Ikegami Tsushinki Co., Ltd.

®

is a registered trademark of Matsushita Electric Industrial Co., Ltd.

®

is a registered trademark of Sony Kabushiki Kaisha TA Sony Corporation.

®

is a registered trademark of Sound Devices, LLC.

Thread the smaller, thin head screws through the
adapter and into the camera body.

Upper screws with thicker
heads secure the receiver

to the adapter.

Lower screws with thinner

heads secure the adapter

to the camera body.

NOTE: If you are having difficulty inserting the
receiver into the camera slot, try mounting the blue
adapter plate to the camera first, then inserting the
receiver.

9

SRc5P and SRc Dual Receivers

Adapters for Stand-Alone Use

SREXT

For stand-alone use,
this kit includes a
rear panel with two
TA3 male jacks for
the balanced out­puts and a power
jack with a locking
connector. Trim the
power cable to the
desired length.

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.

Replacement Screw Kits

SRHARNESS

Ideal for use in portable “bag systems.” Two balanced
output cables and the
power cable are 6 feet
long. Cut the cables
to the desired length
and terminate as
needed.

SRSNYSCREWKIT

Contains:
5 - #28863 (smaller mid-length)
5 - #28864 (larger mid-length)

5 - #28869 (shortest)*

* For Housing

SRUNISCREWKIT

(also for SUPERSLOT)

Contains:
3 - #28862 (longest)
5 - #28864 (mid-length)
3 - #28869 (shortest)*

* For Housing

10

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

®

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.

Installing the SRBATTSLED

Orient the battery sled so that the PCB connectors will
mate when the sled is inserted.

PCB

connectors

Slide the battery sled adapter into the end of the SR
and gently seat it into place with the rear panel flush
with the housing.

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.

Install and tighten the two side panel and two top panel
screws as indicated by the arrows.

Spare
screw

Battery retaining clips.

Battery Life

• The SR receiver operating time with a NP-F570
slim L series battery at full charge is approximately
12 hours.

• Battery life with two Energizer 9 volt alkaline batter­ies in the optional adapter is approximately 5 hours.

• Two LiPolymer 9 volt rechargeable batteries will op­erate the SR for approximately 6 hours. The operat­ing time will typically decrease over the useful life of
a rechargeable battery.

Rio Rancho, NM

11

SRc5P and SRc Dual Receivers

SR9VBP 9 Volt Battery Adapter

This optional adapter is mounted onto the battery sled
for use as the primary power source or as a battery
backup for an external power supply. The housing and
door are constructed of machined aluminum.

Slide the latch plate in the center of the door outward
and swing the door open for access to two 9 volt battery
compartments. Polarity barriers in each battery com­partment protect against inserting the battery back­wards. The circuitry is also protected electrically.

A pressure plate on the battery door compresses the
battery contacts to maintain a solid connection with
the batteries.

SRSLEEVE mounting adapter

This sleeve is supplied with Velcro swatches for mount­ing an SR Series receiver on a flat surface of camera,
cart, rack, etc. The sleeve is sized and lined for a snug
fit in a vertical or horizontal position.

SRHARDWARE mounting adapter kit

Bracket

P/N 26739

Cold shoe

Thumb nut

P/N P1241-1

Long pan

head screw

P/N 28876

Jam nut

P/N 28898

Short pan

head screw

P/N 28898

Retaining pins

P/N 28865

For a vertical mounting, attach the right angle bracket to
the bottom of the sleeve.

mounting foot

P/N 26752

Washer

P/N 28912

Hex Key

P/N 35931

The mechanical and electrical connections are the
same as the rechargeable video camera batteries.

CAUTION: DO NOT
CONNECT TO A BATTERY
CHARGER. USE ONLY TWO
SAME TYPE BATTERIES.

12

1/4-20

insert nut

Long pan

head screw

P/N 28873

Attach retaining

pin to keep bracket

from rotating

Retaining pin

opening

1/4-20 clinch

pressnut

The bracket provides
two different mount­ing nuts. The stan­dard pressnut is used
to attach the sleeve.
The tensioning (clinch
type) pressnut is used
to attach the cold
shoe mounting foot.

LECTROSONICS, INC.

Attach the bracket to the sleeve with the long pan head
screw into the standard pressnut. The retaining pin fits
into the opening in the bracket. Attach the cold shoe
mounting foot to the tensioning nut and rotate it to orient
the receiver as desired.

Standard
pressnut

Retaining

pin

Cold shoe

foot into

clinch

pressnut

UHF Digital Hybrid Wireless

Tighten the jam nut to prevent the foot from rotating

Used together, the battery sled, sleeve and mounting
foot create a versatile, stand-alone, self-powered con­figuration for an SR Series receiver.

®

The clinch nuts in the foot and housing apply friction to
the threads to allow the foot to be rotated to the de­sired position, with the jam nut locking it in place. Use
a wrench to rotate the foot, then tighten the jam nut to
prevent the foot from rotating.

Clinch pressnut in bracket and sleeve

Washer

Jam nut

Thumb nut

Cold shoe foot

For horizontal mounting, insert the cold shoe foot into
the clinch nut in the sleeve. Rotate the foot to the de­sired postion, then tighten the jam nut to lock it in place.

Use a wrench to thread the stud in about 1 - 2
turns, then rotate it to orient the receiver control
panel in the desired direction.

Rio Rancho, NM

13

SRc5P and SRc Dual Receivers

Audio Output Cables and Connectors

MCSR5PXLR5P

Right angle TA5F plug
to 5-pin XLR; balanced
outputs; 25 inches long.
For TA5M output jacks.

MCSR5PXLR2

Right angle TA5F plug to
two 3-pin XLR; balanced
outputs; 20 inches long.
For TA5M output jacks.

MCSRPT

12 inch long TA3 female to
stripped and tinned wires
for balanced output.

PIN 1: Shield
PIN 2: Audio (+) white
PIN 3: Audio (-) green

MCSRXLR

12 inch long TA3 female to
XLR male 3-pin for balanced
output.

PIN 1: Shield
PIN 2: Audio (+)
PIN 3: Audio (-)

MCSRTRS

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.

External Power Cables

21747

Locking LZR style plug
to stripped and tinned;
6 feet long.

Male 3.5 mm TRS plug
to two female TA3 (mini
XLR) connectors for
dual channel use.

RATPAC Adapter Kit

Adapter kit to build either
a 3-pin or 5-pin TA Series
right angle connector.
Includes standard 5-pin
connector, modified 3-pin
insert and backshell,
aluminum right angle
housing, strain relief
tubing, set screws and
wrenches.

The 5-pin RATPAC right angle connector is designed for
the front panel output jack. The 3-pin version is de­signed for the rear panel outputs on the receiver.

The connector can be
rotated during assembly
to exit the cable in the
desired direction. See
instructions included
with the RATPAC kit.

21746

Locking LZR style plug
to stripped and tinned;
12 inches long.

PS200

Hirose 7-4 pin to LZR
type locking plug, 12”
long.

14

LECTROSONICS, INC.

21425

6 ft. long power cord; coaxial to stripped & tinned leads.
Coaxial plug: ID-.080”; OD-.218”; Depth- .5”.

.475”

.375” O.D.

21472

6 ft. long power cord; coaxial to stripped & tinned leads.
Right angle coaxial plug: ID-.075”; OD-.218”; Depth­.375”

.375”

.35”

.375” O.D.

21586

DC16A Pigtail power cable, LZR stripped & tinned.
Thread lock collar.

UHF Digital Hybrid Wireless

®

Rio Rancho, NM

15

SRc5P and SRc Dual Receivers

Mounting and Orientation

A variety of accessories are available to enable various
mounting options. For maximum operating range, the
antennas should be vertical and above the camera and
other equipment. The AMJ Rev. A antenna is jointed so
the whips can be oriented vertically.

Mount the receiver

so that the antennas

extend into clear air and

are oriented vertically

to provide a circular,

horizontal coverage

pattern

The diagrams below depict typical orientations of
transmitter and receiver antennas in field production
and how the RF signal transfer is affected. Maximum
sensitivity is perpendicular to the whip, so an ideal
setup is shown in Fig. 1 and Fig. 2 where the receiver is
mounted in either a vertical or horizontal position with
the whips oriented vertically.

Fig. 3 depicts the receiver and antenna whips oriented
horizontally, which places the null of the receiver an­tenna pattern pointing toward the transmitter. The result,
of course, is a weak signal entering the receiver.

Fig. 4 depicts the worst setup where the nulls in both
receiver and transmitter patterns face one another.

The transmitter antenna whips can point upward as
shown in these diagrams, but they will work just as well
with the whip pointing downward. Mount the transmitter
so that the whip is vertical and not in direct contact with
the wearer’s body or metallic objects in clothing and
costuming.

Do not mount the receiver so the

antennas will be next to another piece of

equipment nor oriented horizontally

The receiver provides stand­alone operation with the battery
sled adapter and mounting
sleeve. It can be mounted in
any position with Velcro, or in
horizontal and vertical positions
using the mounting foot, or
mounted directly onto a 1/4-20
threaded stud on a tripod.

Rx

Rx

Rx

Fig. 1

STRONG

SIGNAL

Tx

Fig. 2

STRONG

SIGNAL

Tx

Fig. 3

WEAK

SIGNAL

Tx

16

Rx

Fig. 4

Tx

WEAKEST

SIGNAL

LECTROSONICS, INC.

AMJ KIT CUTTING TEMPLATE

AMJ Rev. A Jointed Antenna

The AMJ antenna is a general purpose design for any
Lectrosonics receiver or transmitter with a standard
SMA connector. The hinged joint pivots in both direc­tions for positioning the whip at any desired angle.

Lay uncut antenna on this template and cut to length for the desired frequency block

Whip Length

*Cut end of cap off
and slide over whip

Tr im the end of the color cap and slide the remaining sleeve over the whip - OR - Glue color cap onto the end

944

UHF Digital Hybrid Wireless

470

30

31

28

29

32

33

26

27

Frequency Blocks

23

24

25

21

22

20

19

*Color cap

®

Note: Check the scale of your printout. This line should be 6.00 inches long (152.4 mm).

BLOCK FREQUENCY CAP/SLEEVE ANTENNA
RANGE COLOR WHIP LENGTH

470 470.100 - 495.600 Black w/ Label 5.56” 141.2 mm

19 486.400 - 511.900 Black w/ Label 5.27” 133.9 mm

20 512.000 - 537.500 Black w/ Label 4.93” 125.2 mm

21 537.600 - 563.100 Brown w/ Label 4.71” 119.6 mm

22 563.200 - 588.700 Red w/ Label 4.48” 113.8 mm

23 588.800 - 614.300 Orange w/ Label 4.27” 108.5 mm

24 614.400 - 639.900 Yellow w/ Label 4.07” 103.4 mm

25 640.000 - 665.500 Green w/ Label 3.87” 98.3 mm

26 665.600 - 691.100 Blue w/ Label 3.68” 93.5 mm

The hinged joint pivots in both directions

Rio Rancho, NM

17

SRc5P and SRc Dual Receivers

LCD Main Window

Receiver 1 Receiver 2

Diversity

Activity

Transmitter

Battery Level

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.

RF Levels Audio Level

Pilot Tone

Indicator

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.

Icon

Description

Pilot Tone Indicator

A steady “P” icon will be displayed when a pilot tone from the transmitter is present. The “P” will ap­pear only in those compatibility modes which use pilot tone, such as the native Digital Hybrid, 200 Se­ries, IFB modes and Mode 6. The icon will flash if no pilot tone is detected and will change to a small
“b” if the pilot tone has been bypassed. To bypass or enable the pilot tone on Receiver 1, hold MENU/
SEL button and press the UP button briefly. To bypass or enable the pilot tone on Receiver 2, hold
MENU/SEL and press the DOWN button briefly. Bypassing the pilot tone also disables the squelch,
regardless of which compatibility mode has been selected.

Channel Mute

The audio output can be muted on Receiver 1 by holding the MENU/SEL button and holding the UP
button for about a second or more. Receiver 2 can be muted by holding MENU/SEL and then hold­ing the DOWN button. The same buttons toggle the mute status off. An “M” will appear on the screen
when a channel is muted. In ratio diversity mode, the UP button is used and a signal M appears.

Antenna Phase Indicator

This antenna icon is displayed when the SWITCHING DIVERSITY mode is selected. As the antenna
phase is switched, the symbol will flip vertically.

RF Level

This icon changes in size vertically to indicate the strength of the incoming RF signal.

Audio Levels

One icon is used in the SWITCHED DIVERSITY mode and the other when RATIO DIVERSITY is
selected. The icon changes in size horizontally to indicate the audio level (modulation) of the signal
received from the transmitter. The icon display will change to a solid rectangular block when the audio
signal is being limited in the transmitter.

Battery Levels

When the COMPAT mode is set for a compatibility mode that supports battery telemetry (Digital
Hybrid and 200 Series), a battery icon is displayed on the LCD to indicate the transmitter battery
condition. The receiver will periodically check the battery voltage and update the icon in a “fuel gauge”
manner. In the example at left, the icon indicates about “half full.” When other COMPAT modes are
selected, this area of the LCD will be blank.

If selected in the TXBAT setup screen, a transmitter battery timer is available for any compatibility
mode. It accumulates hours and minutes whenever the transmitter is turned on, and retains the ac­cumulated time even when the receiver is off. The icon represents a digital clock readout (rotated 90
degrees clockwise) and in this example is indicating 4 minutes. To reset the battery timer, change

the selection in TXBAT to something other than a timer mode, then back to the desired mode.

Receiver 1

RF Level

Receiver 2

RF Level

Audio
Level

Transmitter

Battery Level

Pressing the MENU/SEL button accesses the menus
and screens for setting up the receiver and searching
for clear frequency channels.

18

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

®

Main Window

The appearance of the LCD Main Window will change
according to which diversity mode is selected:

• SWITCH (2-channel mode) splits the screen to
indicate activity and levels on both receivers and
transmitters.

• RATIO combines the audio outputs of both receiv-
ers to deliver a single audio channel.

With the DIV MODE set to
SWITCH, two audio channels will
be displayed.

With the DIV MODE set to RATIO,
a single audio channel will be
displayed.

Frequency Screen

Receiver

Block

1 24 : B7

632 . 700

Freq in MHz

that any transmitter with hex switches be set at B7 for
this frequency. Lectrosonics transmitters with LCD inter­faces allow frequency to be set in MHz or hex settings.

Press the UP and DOWN buttons to change the fre­quency of the receiver. When the tuning mode is set to
NORMAL, the UP and DOWN buttons tune in single
channel increments. In the group tuning modes, the UP
and DOWN buttons step through the frequencies stored
in the particular group. Refer to the menu item named

TUNING for details.

Freq in

hex

Press MENU/SEL from the Main
Window once for Receiver 1 and
twice for Receiver 2. The
selected receiver is shown in
the upper left corner of the LCD.

In this example, the upper
screen denotes that receiver 1
is set at 632.700 MHz, requiring

Setup Screens

From the Main Window, press MENU/SEL three times
to enter the setup screens. Press UP and/or DOWN to
scroll through the available items and press MENU/SEL
to enter the desired screen. For those items that allow
separate settings for each receiver, press MENU/SEL
repeatedly to toggle back and forth between Receiver 1
and Receiver 2, then press the UP and DOWN buttons
to select the value or option, then press BACK to return
to the previous screen.

Locking and Unlocking the
Front Panel Controls

The front panel controls can be LOCKED to prevent
accidental changes being made during operation and
handling.

Note: Whether locked or unlocked, the setting persists
when the unit is off and even when the power is turned
off.

From the Main Window, press and hold the UP and
DOWN arrows at the same time and observe the
display. The current state is displayed as LOCKED or
UNLOCKED, and numerals appear as a 3, 2, 1 count­down takes place. When the countdown is complete the
state is reversed and the new state is displayed.

LCD Backlight Setup

With the power on, simultaneously press the UP but­ton AND the POWER/BACK button. The unit will then
display the Backlight Options screen. Use the UP and
DOWN arrows to select the desired backlight operating
mode.

BKLIGHT

DOWN

UP

BKLIGHT

30 SEC

DOWN

UP

BKLIGHT

5 MIN

DOWN

UP

BKLIGHT

OFF

Remains on

ON

Dims after 30 seconds

Dims after 5 minutes

Backlight turns OFF
and Remains OFF

Battery Timer Reset

Navigate to TXBAT in the menus and select anything
other than AAT, 9VT or LBT. Then set it back to the
timer setting that matches the batteries you are using
in the transmitter. There is no need to exit the setup
screen. The timer will be reset when you select a non­timer mode.

SHORTCUT: Hold the MENU/SEL button in while
pressing the UP or DOWN arrow to jump in 16 channel
increments (1.6 MHz steps).

Rio Rancho, NM

19

SRc5P and SRc Dual Receivers

DIVMODE is set

Navigating the LCD

Setup Screen

SETUP

(item)

Press

UP/DOWN

to select

SETUP

LEVEL

UP

SETUP

DEFAULT

DOWN

UP

SETUP

LOCALE

DOWN

UP

SETUP
SMARTUNE

DOWN

UP

SETUP

IR SYNC

DOWN

UP

SETUP

SCAN

DOWN

UP

SETUP

DIVMODE

DOWN

UP

SETUP

TALKBACK

DOWN

UP

SETUP

COMPAT

DOWN

UP

SETUP

TUNING

DOWN

SETUP
STEPSIZE

DOWN

UP

SETUP

SmtNR

DOWN

UP

SETUP

PHASE

DOWN

UP

SETUP

TXBAT

DOWN

UP

SETUP

MIXTRIM

DOWN

UP

SETUP

MIXMODE

DOWN

UP

SETUP

TONE

DOWN

Receiver 1

Pilot Tone

ON\OFF

Receiver 2

Pilot Tone

ON/OFF

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL
BACK

BACK

MENU

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

SEL

BACK

BACK

BACK

26 :

2AF

657.500

RECEIVER 1

LEVEL LEVEL

00

BACK

DEFAULT
RESET– –

LOCALE

--

SMART

TUNE

SYNC

BACK

DIVMOD

RATIO

TALKBACK

OFF

RECEIVER 1

COMPAT

NA HYBR

RECEIVER 1

TUNING

NOR

STEPSIZE

100

RECEIVER 1

SmtNR

NOR

RECEIVER 1

PHASE

+

RECEIVER 1

TXBAT

9V

9V

MIXTRIM

00

00

MIXMODE

MIXBOTH

RECEIVER 1

TONE?

00+05

Hold MENU and

press UP

momentarily

Hold MENU and

press DOWN

momentarily

1

MENU

Receiver 2

Press UP/DOWN to change frequency

00

1

1
2

25
8A

1

a

25

FUL

receiver

SEL to
select

receiver

Press
SEL to
select

receiver

Press

SEL to

select

receiver

Main Window

BACK

Switched

26 :

80

652.800

RECEIVER 2

SEL

SEL

00

Press

DOWN to

continue

Press

UP/DOWN

to select

TX

1

BAND

Press UP to sync TX 1

Press DOWN to sync TX 2

SCANNING

STOPS

SEL

Press

UP/DOWN

to select

Press

UP/DOWN

to select

Press

UP/DOWN

to select
receiver

RECEIVER 2

Press

TUNING

SEL to

select

NOR

receiver

Press
MENU/SEL
to highlight

receiver

RECEIVER 2

Press

SmtNR

SEL to

select

NOR

RECEIVER 2

Press

PHASE

+

TXBAT

9V

Press

select

Press

to select

MIXTRIM

RECEIVER 2

TONE?

SEL to

receiver

UP/DOWN

MENU

Receiver 1

Press UP/DOWN to
change frequency

Press

UP/DOWN

00

to adjust

ARE YOU
SURE?

NOTE: This function appears in
menu only on Band C2 units.

Press

UP/DOWN

to select

B1

band

NOTE: An error message will appear if a setting on the

transmitter cannot be enabled by the SYNC procedure

Press

25

SEL to

select

5E

receiver

NOTE: Main Window will look like
this when the RATIO DIV mode is
selected.

Press
MENU/SEL
to highlight

mode

STEPSIZE

100

9V

00

00+05

FUL

+05

RECEIVER 2

COMPAT

Press

UP/DOWN

to select

a

mode

25

Press

UP/DOWN

to select

mode

Press

UP/DOWN

to select

Press

UP/DOWN

to select

Press

UP/DOWN

to select

value

Press

UP/DOWN

to select

Hold MENU
and hold UP

Hold MENU and

hold DOWN

Ratio

Press

MENU/SEL

to reset

Press

MENU/SEL

to start

scanning

Selected cursor blinks

2

MODE E

Press

UP/DOWN

to select
step size

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

RECEIVER 1

LVL 1K

Mute Audio on

Receiver 1

Mute Audio on

Receiver 2

When DIVMODE is set to RATIO the
frequency screen will look like this.

25
D7

Ratio
Mode

UP/DOWN

R 26 :

652.800

OK
SYNC

UP/DOWN

to scroll

frequency

BACK

Press

to select

mode

00+05

Freq hex code

Block

80

1

Press

Tone will be enabled
when level is set with
the UP/DOWN buttons

Freq MHz

Press both

UP and

DOWN to

ZOOM

Press
MENU/SEL
to continue

Press

DOWN to IR

sync TX 1

NOTE: Press the BACK button
from the Main Window to display
the external power supply
voltage. Press it again to display
the transmitter battery voltages.
A third press returns to the Main
Window.

Follow

prompts to

scan and set

up TX 2

NOTE: Fewer

screens are
shown when

to RATIO

Press

UP/DOWN to

scroll

frequency

25

20

LECTROSONICS, INC.

Menu Item Descriptions

LEVEL

This setup screen displays the audio output level of the
receiver in dBu when the transmitter is fully modulated.
Press the MENU/SEL button to toggle between receiver
1 and receiver 2. Use the UP or DOWN buttons to
change the level. Range is from -50 to +5 dBu in 1 dB
steps. Press the BACK button to leave this screen.

The output levels at the two jacks may be set indepen­dently, regardless of the diversity mode setting.

DEFAULT

Restores the factory default settings.

LOCALE (Band C2 units only)

The LOCALE setup screen has two settings, “--” and
“JA”. If “JA” is selected, C2 band coverage stops at

713.9 MHz. If “--” is selected, C2 band coverage goes
all the way to 716.775 MHz.

SMARTUNE

See the section entitled Finding Clear Frequencies
with SmartTuneTM.

IR SYNC

Navigate to this menu item to manually initiate the IR
sync transfer. Hold the IR ports on the transmitter and
receiver facing each other a foot or two apart and press
the UP arrow for channel 1 or the DOWN arrow for
channel 2. Watch for a confirmation on the transmitter
LCD to verify the settings were correctly transferred. If
one or both settings could not be enabled on the trans­mitter, an error message will appear on its screen.

SCAN

See the section entitled Finding Clear Frequencies
with Manual Scanning.

DIVMODE

The SWITCH diversity mode (dual channel mode) al­lows the two internal receivers to operate independently
on different frequencies and settings with two different
transmitters. Diversity reception uses an antenna phase
switching technique on each receiver. When this mode
is selected, the setup screens will prompt you to select
the receiver to be adjusted.

The RATIO mode combines the two internal receiv­ers to pick up the same transmitter and mix their audio
outputs in a ratio panning mode. In this mode, the setup
screen for frequency will prompt you for a single value
which will automatically be set for both receivers.

TALKBACK

This is a special function that re-directs the audio output
of the transmitter in use to the channel 2 output when
a button is pressed on the transmitter. The normal use
is to provide a “com” channel so the person using the
transmitter can have a direct line to the crew or produc­tion staff that is not sent to the program output. The
HHa hand held transmitter provides a programmable
switch on the housing that can be configured for this
function.

UHF Digital Hybrid Wireless

Programmable button

As long as the button
is held in, the audio
will appear at the
channel 2 output.

Button

(none)
Mute
Ta lkBk

When the button is
released, the audio
output will switch
back to channel 1.

To enable this mode,

simply select Talk­back in the menu and use the UP and DOWN arrow
buttons to turn the function on. The mode must also be
enabled on the transmitter.

Talkback works the same way in either the SWITCHED
or RATIO diversity modes, but ONLY works in the HY­BRID compatibility modes.

NOTE: When Talkback is enabled, only receiver 1 and
a blinking TB will appear in the Main Window.

COMPAT

Compatibility modes adjust the FM deviation and audio
processing (companding) to match other Lectrosonics
models and some models from other manufacturers.

NA HYBR North American Digital Hybrid Wireless

NU HYBR ETSI compliant Nu Digital Hybrid Wireless®

MODE 3 Other manufacturer*

200 SER 200 Series transmitters

100 SER 100 Series transmitters

JA MODE3 Japan Other manufacturer*

JA HYBR Japan Digital Hybrid Wireless

MODE E Other manufacturer*

EU HYBR European Digital Hybrid Wireless

300 SER 300 Series transmitters (European)

MODE 7 Other manufacturer*

MODE 6 Other manufacturer*

IFB SER Standard IFB mode

NOTE: Make certain the COMPAT mode is set to
match the mode in the transmitter for optimum audio
quality. If the modes are not matched, the audio will be
distorted or noisy, or there may be no audio at all.

®

®

®

®

Rio Rancho, NM

21

SRc5P and SRc Dual Receivers

TUNING

In addition to the NOR (normal) mode, this screen also
allows Selection of one of four factory pre-selected
frequency groups (Groups a through d) or two user
programmable frequency groups (Groups u and v).

• NOR allows selection of all 256 frequencies that the
receiver will tune. Each press of the UP or DOWN
button will step in 100 kHz increments to the next
frequency.

• a, b, c, d sets the receiver to tune only factory
preselected frequencies, up to eight in each group.
Each press of the UP or DOWN button will step to
the next frequency in the group. (see page 26)

• u, v allow up to 16 user-selected frequencies to
be stored in each group. Each press of the UP or
DOWN button will step to the next stored frequency
in the group.

Note: The TUNING setup screen only selects the
tuning mode (NORMAL or Group Tuning). Operating
frequencies are chosen through the Frequency
Screens.

Receiver Block Frequency

25

1

a

658.500

Tuning

group

If the selected frequency is not in the tuning group, the
tuning group indicator will blink.

1

a

658.500

NOTE: When a tuning group is selected, the available
frequency selections will be limited to those that are in
the tuning group.

In compatibility modes other than Digital Hybrid and
200 Series, no battery telemetry information is avail­able, so the TXBAT setup screen offers only two
choices:

• --- (no timer) - Display no transmitter battery status
in the main window.

• TIM - Monitor the transmitter battery status with the
battery timer in the LCD Main Window.

NOTE: To reset the timer, set the TXBAT mode to
anything other than AAT, 9VT or LBT, then back to the
desired mode.

Frequency

25

B9

in MHz

B9

in hex

When any tuning
mode other than
NOR is selected,
the frequency
screen will include
the selected tuning
group number.

USING THE GROUP TUNING MODES

Press MENU to select receiver 1 or 2 and view the fre­quency screen. Press the UP or DOWN button to switch
to the next frequency in the group.

470 : 1A

1

a

472.700

Holding the MENU/SEL button while pressing the UP
or DOWN button will step to the next frequency in either
25 or 100 kHz steps, which will select a frequency that
is not stored in the group. In this case, the group letter
in the display will blink to indicate that the selected
frequency is not included in the group.

470 : 1E

1

a

473.100

About using groups u and v:

When no frequencies are stored in groups u and v, the
UP and DOWN buttons will function the same as the
NORMAL mode (each press up or down one step).

When only one frequency is stored in group u or v, hold
the MENU/SEL button in and then press the UP or
DOWN button to scroll to a different frequency.

Adding/Deleting frequencies to groups u and v:

Select the frequency and then do one of the following:

• Starting with firmware v1.15, simply press and hold
the MENU button until the u or v stops or starts
blinking.

• With earlier firmware versions, hold the MENU but­ton in and then press and hold the UP or DOWN
arrow button until the u or v starts or stops blinking.

STEPSIZE

Selects the frequency increment on each receiver to 25
kHz or 100 kHz.

SmtNR

This setup screen is available only in the Digital Hybrid
COMPAT (compatibility) mode. Select the desired mode
while listening to the audio to of one of three choices:

• OFF provides no noise reduction for complete
transparency, which is useful in controlled environ­ments with very little high frequency noise such as
an indoor motion picture production set.

• NORMAL applies a moderate amount of noise
reduction to noticeably reduce hiss from subtle
sources such as electret microphones.

• FULL is very similar to the Lectrosonics noise
reduction system used for many years in the 195
and 200 Series analog systems. Hiss from electret
microphones and some environmental HF noise are
suppressed.

A letter will appear next to the

frequency to indicate which group

is selected.

The letter will blink when a

frequency outside of the tuning

group is selected.

22

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

RECEIVER 2

®

PHASE

This setup screen allows the audio output polarity to be
inverted to match other microphones or audio sources.

TXBAT

• AA - Transmitter uses a AA alkaline battery.

• AAL - Transmitter uses a AA lithium battery (not
rechargeable).

• AAT - Transmitter uses an alkaline, lithium or
rechargeable AA battery. Monitor the battery status
with the timer in the receiver.

• LB - Transmitter uses a Lectrosonics LB-50 re­chargeable battery.

• LBT - Transmitter uses a Lectrosonics LB-50 re­chargeable battery.

• 9V - Transmitter uses a 9V alkaline battery.

• 9VL - Transmitter uses a 9V lithium battery (not
rechargeable).

• 9VT - Transmitter uses a 9V battery of any type.
Monitor its status with the timer in the LCD Main
Window.

MIXTRIM and MIXMODE

When set to the SWITCHED (dual channel mode),
special options are available to allow the audio from the
receivers to be mixed to either one or both audio output
channels.

The MIXMODE setting determines which audio signal
appears at which output channel:

• MIXBOTH mixes the audio and delivers the mix to
both output channels.

• MIXTO 1 mixes the audio and delivers the mix to
output channel 1.

• MIXTO 2 mixes the audio and delivers the mix to
output channel 2.

• DIRECT keeps the audio separated and delivers
receiver 1 audio to output channel 1, and receiver 2
audio to output channel 2.

The MIXTRIM setting applies attenuation up to 20dB in
1 dB steps to adjust the ratio of the two audio signals in
the mix. This adjustment takes effect only when a mix
mode is selected (it is ignored when the mix mode is
set to DIRECT).

IMPORTANT: The output level of each receiver
is adjusted with the LEVEL setup screen, which
is hardware-based, so it affects the output level
regardless of which mix mode is selected. MIXTRIM
then applies attenuation to that level setting resulting in
the final level delivered to the output channel. It is good
practice to set the output level of both receivers to

the same value when using a mix mode.

When a MIXMODE is selected, each audio signal is au­tomatically attenuated by 6 dB prior to the mixing. This
is done to avoid overload and potential distortion since
mixing increases the level by 6 dB.

TONE

The TONE setup screen enables an audio test tone at
the receiver output for precise level matching with other
equipment. The first screen prompts you to press the
UP or DOWN button to enable the tone at the receiver
output. Press MENU/SEL to toggle between receivers.

TONE?

00+05

The first screen prompts you to
press the UP or DOWN button to
start the tone.

Once the button is pressed, a 1 kHz tone is enabled,
and its level can be adjusted with additional presses on
the UP or DOWN buttons.

The level set here will be retained in the regular operat­ing mode. It will supersede the setting made in the
LEVEL setup screen. The test tone has 1% distortion
and is intended for confirmation of output levels only.
To exit the test tone screen and stop the tone press the
BACK button.

Front Panel Shortcuts

A convenient shortcut is available from any setup
screen that displays the two receiver selection options
next to each other, such as the LEVELS and STEPSIZE
screens. Once the value has been set on one receiver,
the same value can be copied to the other receiver with
a simple button push combination.

Hold the MENU/SEL button and press the DOWN arrow
to copy the value set on receiver 1 to receiver 2. Hold
MENU/SEL and press UP to copy the value set on
receiver 2 to receiver 1.

LEVEL LEVEL

+05

NOTE: It does not matter which receiver is selected
(highlighted).

00 00

Hold MENU and

press UP arrow

00

Accessing Block 606

Band B1, B2 and C1 SRc receivers can be used with
legacy Block 606 Lectrosonics transmitters by invoking
a special Block 606 legacy mode so the correct pilot
tones will be present. To invoke the Block 606 mode,
press the BACK button as needed to move to the Main
Window, then press the PWR/BACK and DOWN arrow
buttons simultaneously. Use the UP and DOWN arrows
buttons to select the desired tuning range.

Beginning with firmware v1.13, the LCD will simply
display 606 on the setup screen. Previous firmware ver­sions display 606B or 606C if you are a using Band B1
or C1 unit. When the mode is enabled, 606 will appear
in the frequency selection screen as a reminder that the
mode is enabled.

Rio Rancho, NM

Note: Neither Band B1 nor Band C1 includes all Block
606 frequencies.

23

SRc5P and SRc Dual Receivers

Finding Clear Frequencies with SmartTune

SmartTune is the easiest and fastest way to scan the
local RF spectrum and find clear operating frequencies.

The receiver will scan through its tuning bandwidth and
automatically find “empty” areas within the tuning range
that have little or no RF energy. The receiver will then
be set to a frequency within an empty area and prompt
you to continue or use the IR function to sync to a trans­mitter.

Note: Pressing BACK during an active scan will restore
the operating frequency to what it was set at pre-scan.

When the DIVMODE is set to SWITCHED, there are
two different frequencies that can be discovered, so the
LCD screens will prompt you through the procedure for
one receiver, then continue to repeat the process for
the other receiver. When the DIVMODE is set to RATIO,
there is only one frequency to be found.

The sample screens shown here are for the
SWITCHED mode. Similar screens appear for the
RATIO mode, but there is only one frequency to be
discovered.

SETUP

SMARTUNE

SMART

TUNE

TX 1
BAND

*NOTE: 23N and B1N (“N” refers to North America)
scans skip past TV Channel 37 (608 to 614 MHz) since
it is reserved for radio astronomy in North America.

B1

OK

SYNC

1

Navigate to the SMARTUNE screen and
press MENU/SEL.

Use the UP and DOWN arrows to select

1

receiver 1 or 2, and press MENU/SEL.

The scan can cover all three blocks in the
band, or only one of the three. Use the
UP and DOWN arrows to select the tuning
range to be scanned:
B1 - the entire Band B1
21 - block 21 only
22 - block 22 only
23 - block 23 including TV37
23N - block 23 bypassing TV37*
B1N - Band B1 bypassing TV37*

After the scanning is complete, the
newly discovered frequency will be set
automatically. The LCD will then prompt
to SYNC the frequency to the matching
transmitter via the IR port (DOWN
ARROW), or to continue by pressing OK
(MENU/SEL).

TM

After leaving the SYNC screen, the

TUNE RX2

NOW? YES

IS TX1

ON? YES

OK

SYNC

RF signal strength

Pilot Tone icons (P)

2

LCD will ask about setting up the other
receiver. Use the UP and DOWN arrows to
select YES to tune the other receiver, then
press MENU/SEL to continue.

Turn on the transmitter that matches the
first receiver that was tuned. Use the
UP and DOWN arrows to select YES and
press MENU/SEL.

After the scanning is complete, the
newly discovered frequency will be set
automatically. The LCD will then prompt
to SYNC the frequency to the matching
transmitter via the IR port (DOWN
ARROW), or to continue by pressing OK
(MENU/SEL).

Press the BACK button several times
to return to the Main Screen and verify
that both transmitters show a strong RF
signal strength and that the Pilot Tone
icons are NOT blinking (when Pilot Tone
is enabled).

It is always good practice to verify the frequencies by
going through the procedure in the section entitled
Multi-channel System Checkout.

24

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

Finding Clear Frequencies with Manual Scanning

®

Scan Window

Receiver 1,

dashed line

Receiver 2,

solid line

Block

26

Press both UP and

BD

RF activity level

Cursors blink to indicate the

currently selected receiver

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.

When the receiver is configured for SWITCHED diver­sity (dual channel mode), two cursors will appear when
the scanning is stopped. The cursor for receiver 1 is a
dashed line and the cursor for receiver 2 is a solid line.
Press MENU/SEL to toggle between the two receivers
(selected channel will blink). Select the channel and
use the UP and DOWN buttons to move the cursor and
locate a frequency with no (or very weak) RF activity.

Scroll through the screen with the UP and DOWN but­tons and find a frequency where no RF signals (or in
the worst case, only 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.

NOTE: The appearance of the cursors as described
above started with firmware v1.15. In previous versions
the selected cursor would appear as a dashed line, and
neither cursor would blink.

Freq in hex

control panel to switch

Zoom View Window

DOWN arrows on

to the Zoom View

Press the BACK
button to return

to the Scan View

Window

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 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/s to match the corresponding
receiver/s (CH1 or CH2) on the receiver display. Turn
the transmitter on and verify that a strong RF signal is
present. If your transmitter has an IR (infrared) port, you
can transfer the frequency setting using the IR interface.

It is always good practice to verify the frequencies by
going through the procedure in the section entitled
Multi-channel System Checkout.

FREQ.

WARNING

Cursor (center bar)

IMPORTANT:

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.

Block

25

C7

Freq in

hex

Rio Rancho, NM

25

BLOCK 22

5t

Bt

4t

At

7t

0t

5t

Dt

Dt

3t

At

7t

9t

2t

Ct

3t

5t

Bt

4t

At

4t

0t

5t

Bt

3t

Dt

2t

3t

At

0t

7t

SRc5P and SRc Dual Receivers

Pre-coordinated Frequencies

NOTE: As the spectrum has become more congested,
interference from external sources has become
common. As a result, the frequencies provided in these
pre-coordinated groups may or may not be 100%
usable in some locations. Interference from external
sources may appear as direct signals, or may mix with
the pre-coordinated frequencies and generate new RF
signals through IM (intermodulation).

About Frequency Coordination

Interference from IM (intermodulation) is a potential
problem in all multi-channel wireless systems, so proper
frequency coordination is always required to avoid
noise, range and dropout problems. Your options to ac­complish this include:

• Using the pre-coordinated frequency groups

• Scanning with the receiver and performing a sys­tem checkout (See Multi-channel System Checkout)

• Contacting Lectrosonics for assistance

Groupings of compatible frequencies have been cre­ated to minimize intermodulation problems in multiple
channel wireless systems. The frequencies can be used
with Digital Hybrid and analog Lectrosonics wireless
equipment. Compatibility with other brands is likely, but
not guaranteed by Lectrosonics.

These frequencies have been calculated to minimize IM
between these frequencies only, however, RF signals
from outside sources can still interfere with operation.
So, even if only these pre-coordinated frequencies are
being used, a Multi-channel System Checkout should
be conducted. See the procedure on the next page.

The eight frequencies in each of the four groups are
generally compatible for simultaneous use.

Special Notes on Block 23

The block 23 frequency range includes the spectrum
from 608 through 614 MHz that is allocated for radio
astronomy (radio telescopes) which is blocked from
use in the US. The SRc Series receivers are tested and
compliant with the technical standards in the US and
Europe, so frequencies can be selected in the 608 to
614 MHz range. US model transmitters, on the other
hand, will not tune to frequencies in this range.

European model transmitters, which include “E01” in the
model number, will operate within the 608 to 614 MHz
band. Be certain that the COMPAT (compatibility) mode
is set to match the transmitter model and COMPAT
mode.

NOTE: See page 22 for information on the
compatibility modes.

26

Pre-coordinated frequencies
are arranged in four groups
as shown in this example of
block 22.

The receiver LCD displays the
current settings.

Selected

Block

receiver

22 : 1A

1

a

565.800

Group Frequency

Hex code

FREQ SW SET US TV CH

563.700 0,

564.300 0,

565.200 1,

565.800 1,

567.100 2,

568.000 3,

568.500 3,

569.300 3,

575.700 7,

577.900 9,

578.600 9,

579.900 A,

581.700 B,

582.600 C,

585.200 D,

587.500 F,

BLOCK 22

FREQ SW SETUS TV CH

570.100 4,

570.700 4,

571.600 5,

572.200 5,

573.200 6,

574.400 7,

574.900 7,

575.500 7,

581.100 B,

582.100 B,

582.600 C,

584.300 D,

585.000 D,

585.600 E,

586.300 E,

588.100 F,9 tv32

v29

v29

v29

v29

Grp a

v30

v30

v30

v30

v31

v31

v32

v32

Grp b

v32

v32

v33

v33

v30

v30

v30

v31

Grp c

v31

v31

v31

v31

v32

v32

v32

v32

Grp d

v32

v32

v32

Selecting the Frequency Block

The SRc Series wideband receivers tune across three
frequency blocks. In order to select one of the pre-coor­dinated groups in a particular block, start by manually
tuning the receiver to the desired block or to a frequen­cy within that block, then select the TUNING group.

BAND A1

BLOCK FREQ RANGE

470* 470.100 - 495.600

19* 486.400 - 511.900

20 512.000 - 537.500

BAND B1

BLOCK FREQ RANGE

21 537.600 - 563.100

22 563.200 - 588.700

23 588.800 - 614.300

*IMPORTANT NOTE:
Blocks 470 and 19 overlap each other. Make certain
that BOTH FREQUENCY AND BLOCK match the
transmitter being used. The hex codes are different for
the same frequency in blocks 470 and 19. This means
that the pilot tones are also different, so the squelch
will not open unless the correct block is selected.

LECTROSONICS, INC.

Frequency Coordination

IM (intermodulation) is a process of two or more RF
signals mixing in any stage in the transmitter or receiver
that generates another RF signal. If this new signal
happens to land on a carrier, IF or oscillator frequency
you may have interference problems that affect range
or audio quality. The possible combinations also include
odd and even order harmonics of the carriers.

Feel free to contact the factory if you need help in coor­dinating frequencies. A specialized computer program is
used to perform thousands of calculations and identify
various interfering signals. Potential problems and trou­ble areas can be identified in advance, and proposed
new frequencies or other solutions can be suggested.
This service is offered to authorized Lectrosonics deal­ers and other customers who are using Lectrosonics®
wireless microphone and wireless IFB systems.

Even with thorough analysis, interference can still be
present from local sources that cannot be predicted in
advance. This makes it mandatory to check out a multi­channel system before the production or use begins.

Multi-channel System
Checkout

IM (intermodulation) and crosstalk increases as the
distance between transmitters and receiver decreases.
In order to conduct a valid checkout of multi-channel
compatibility using the procedure shown here, it is best
to adhere to the following guidelines:

• 4 to 5 feet between transmitters

• 20 to 25 feet between transmitters and receiver
antennas

• Receiver antennas not touching one another

If the distances are less than this, IM will be exagger­ated and not likely to be realistic. If the distances are
greater than this, IM products that could occur during
actual use that may not show up in the checkout proce­dure.

Interference can result from a wide variety of sources
including TV station signals, other wireless equipment
in use nearby, or from intermodulation within a multi­channel wireless system itself.

The pre-coordinated frequencies in the tables on the
previous pages address in-system compatibility, but
obviously do not take into account RF signals from
external sources that may be present in the location
where the system will be operating.

UHF Digital Hybrid Wireless

The scanning process will identify external RF signals,
but it does not address the compatibility of the selected
frequencies. Always go through the following steps to
make sure the frequencies that are chosen are com­patible within themselves and also free from external
interference.

1. Set up the system for testing. Place antennas in
the position they will be used and connect to the
receivers. Place transmitters about 4 to 5 feet apart
and about 20 to 25 feet from the receiver antennas.
If possible, have all other equipment on the set,
stage or location turned on as well, especially any
mixing or recording equipment that will be used with
the wireless system.

2. Turn on all receivers. Leave transmitters off.
Look at the RF level display on each receiver. If
an indication is present, change the frequency to
a clear channel where no signal is indicated. If a
completely clear channel cannot be found, set it for
the one with the lowest RF level indication. Once all
receivers are on clear channels, go to the next step.

3. Start with all transmitters turned off. Then turn
on one transmitter at a time. Look at the matching
receiver to verify a strong RF signal is received.
Then, look at the other receivers and see if one of
them is also picking up the signal. Only the match­ing receiver should indicate a signal. Change fre­quencies on either system slightly until it will pass
this test, then check again to see that all receivers
are still on clear channels as in Step 2. Repeat this
procedure for each transmitter, one at a time.

4. With all transmitters and receivers turned on,
turn each transmitter OFF one at a time. Look at
the RF level indicator on the receiver that matches
the transmitter that is turned off. It should “fall silent”
and the RF level should disappear or drop to a very
low level. If it does not, change the frequency on
that receiver and transmitter and try it again.

IMPORTANT: Any time a frequency is changed on any
of the systems in use, you must start at the beginning
and go through this procedure again for all systems.
With a little practice, you will be able to do this quickly
and save yourself some grief.

®

Rio Rancho, NM

27

SRc5P and SRc Dual Receivers

Troubleshooting

Symptom Possible Cause

INITIAL POWER ON

LCD display not active or lit External power supply disconnected or inadequate.

Wrong polarity power source. The external power input jack requires
POSITIVE (+) to be on the center pin. Battery gets warm and doesn’t
work.

Version message shows DSP or COM This indicates an internal error. Please contact the factory for
assistance.

Display indicates CHECK FREQ This is a warning that a strong RF signal is present that is not
centered on the channel, and the audio is likely to be distorted.

There are three principal causes:

1) The transmitter is set to the wrong channel, but close to the
the correct channel. Check frequency setting of transmitter.

2) A foreign signal is causing the condition, such as from a local
TV station or from intermodulation from another transmitter.
Retune the receiver and transmitter to a clear frequency.

3) The transmitter carrier frequency is not correct (rare occurrence).
Contact factory for repair.

If any of these solutions don’t remove the warning message, the
transmitter or receiver may need repair.

PILOT TONE SQUELCH

Pilot Tone indicator (P) present, but no sound (Check audio meter first)

Audio output cable bad or disconnected.

Audio Output level too low. Use the built-in test tone to verify levels.

Pilot Tone Indicator (P) keeps flashing when transmitter turned on

Pilot tone detection can take several seconds. Turn on the transmitter

power (and the audio switch on some models) and wait 3 to 5 seconds
for the “P” to indicate steadily.

Transmitter and receiver not on same frequency.

Receiver compatibility mode does not match the transmitter in use.
(See Selections from Main Window, COMPAT Window.)

Noise on audio and Pilot Tone Indicator is “b”

The pilot tone bypass has been activated. Navigate to the Main

Window. Hold SEL and press the UP arrow to reset channel 1. Hold
SEL and press the DOWN arrow to reset channel 2. (only from the
Main Window)

Pilot Tone Indicator not present but receiving audio

Receiver is set to a compatibility mode that doesn’t use Pilot Tone.
Check that receiver compatibility mode matches the transmitter in use
as any sufficiently strong signal can unsquelch the receiver in this
mode, compatible or not.

NOTE: In the Digital Hybrid, 200 Series, IFB Mode, Mode 6 and Mode E compatibility modes, the PILOT indicator on the LCD
shows as a solid “P” to indicate that the audio has been turned on at the transmitter, and that the audio output on the receiver is
enabled. When the “P” is on, the audio is enabled. If the “P” is flashing the pilot tone is not detected and the audio will be muted
(squelched).

In the other compatibility modes, no pilot tone is used and the “P” is never displayed. Audio is present whenever the receiver
detects a sufficiently strong signal.

Regardless of the compatibility mode, activating the “pilot tone bypass” causes a lowercase “b” to appear on the LCD main
window and forcing the squelch to open and deliver audio. When no matching transmitter is turned on, loud noise will be
present at the receiver output.

28

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

Symptom Possible Cause

ANTENNAS AND RF SIGNAL STRENGTH

RF Level is weak Receiver may need to be moved or reoriented.

Antenna on transmitter or receiver may be defective or poorly
connected - double check antennas.

Improper length of antenna, or wrong antenna on transmitter or
receiver. UHF whip antennas are generally about 3 to 5 inches long.
UHF helical antennas may be shorter, but are often less efficient.

No RF Signal Make certain frequency switches on transmitter match the receiver
frequency setting.

Check battery in transmitter.

AUDIO SIGNAL QUALITY

Poor signal-to-noise ratio Transmitter gain set too low.

The noise may not be in the wireless system. Turn the transmitter
audio gain all the way down and see if the noise remains. If the
noise remains, then turn the power off at the transmitter and see if it
remains. If the noise is still present, then the problem is not in the
transmitter.

If noise is still present when the transmitter is turned off, try lowering
the audio output level on the receiver and see if the noise lowers
correspondingly. If the noise remains, the problem is not in the
receiver.

Receiver output is too low for the input of the device it is feeding.
Try increasing the output level of the receiver and lowering the
input gain on the device the receiver is feeding.

Distortion Transmitter input gain too high. Check and/or readjust input gain on
transmitter according to the LEDs on the transmitter and then verify
the setting with the audio meter in the main window.

Audio output level too high for the device the receiver is feeding.
Lower the output level of the receiver.

Bad frequency response or generally poor audio quality

Ensure the receiver is set to the compatibility mode that matches
the transmitter in use.

®

Rio Rancho, NM

29

SRc5P and SRc Dual Receivers

Specifications and Features

Operating Frequencies:
Band A1: 470.100 - 537.575 MHz
Band B1: 537.600 - 614.375 MHz
Band B2: 563.200 - 639.975 MHz
Block 606: 606.000 - 631.500 MHz
Band C1: 614.400 - 691.175 MHz
Band C2: 640.000 - 713.900 MHz/716.775 MHz selectable

Frequency selection steps: Selectable; 100 kHz or 25 kHz

Receiver Type: Dual conversion, superheterodyne
IF Frequencies: Ch.1: 248.450 MHz and 350.000 kHz
Ch. 2: 243.950 MHz and 250.000 kHz
Frequency Stability: ±0.001 %
Front end bandwidth: 20 MHz @ -3 dB
Sensitivity

20 dB SINAD: 1.0 uV (-107 dBm), A weighted
60 dB Quieting: 2.2 uV (-100 dBm), A weighted

Squelch quieting: Greater than 100 dB typical
AM rejection: Greater than 60 dB, 4 uV to 1 Volt
Modulation acceptance: 85 kHz
Image and spurious rejection: 85 dB
Third order intercept: 0 dBm
Diversity method: SmartDiversity

combining or Ratio Diversity using both
receivers for a single audio channel

FM Detector: Digital Pulse Counting Detector operating
at 250 and 350 kHz

RF spectrum analyzer: Coarse and ne scanning modes for

RF spectrum site survey
Antenna inputs: 50 Ohm; SMA female connectors
Audio output connectors: • Interchangeable D connector adapters

for camera slot interfaces

• Dual TA3 male (mini XLR) balanced
output adapter

• Balanced output adapter with xed
cables
Front panel audio output (5P model): Control panel TA5M with two balanced
outputs

Audio output level: Adjustable -50 to +5 dBu in 1 dB steps;
unbalanced output is 6 dB lower

Audio channel crosstalk: -80 dB or better
Front Panel Controls and Indicators:

• Sealed panel with membrane switches

• LCD monitors pilot tone; antenna phase,
receiver battery level; transmitter battery
status; audio level, RF level

Audio test tone: 1 kHz, -50 dBu to +5 dBu output (bal);
1% THD

TM

phased antenna

Transmitter battery type Selection: 9V alkaline, 9V lithium, AA alkaline,
AA lithium, NiMH, LB-50 rechargeable

Phase invert: Audio output phase normal or inverted
Compatibility modes:

NA HYBR North American Digital Hybrid Wireless

NU HYBR
MODE 3 Other manufacturer*
200 SER 200 Series transmitters
100 SER 100 Series transmitters
JA MODE3 Japan other manufacturer*
JA HYBR Japan Digital Hybrid Wireless

MODE E Other manufacturer*
EU HYBR European Digital Hybrid Wireless
300 SER 300 Series transmitters (European)
MODE 7 Other manufacturer*
MODE 6 Other manufacturer*
IFB SER IFB transmitters in IFB mode

*Contact the factory for details on other manufacturers

SmartNR (noise reduction): OFF, NORMAL, FULL modes
(available in Digital Hybrid mode only)

Audio Performance (overall system):
Frequency Response: 32 Hz to 20 kHz (+/- 1dB)
THD: 0.15% (system) typical in Digital Hybrid mode

System Dynamic Range:

(Note: The dual envelope “soft” limiter provides

exceptionally good handling of transients using

variable attack and release time constants.
Once activated, the limiter compresses 30+ dB
of transmitter input range into 4.5 dB of receiver

output range, thus reducing the measured gure

for dynamic range with no limiting by 4.5 dB.

Rear Panel Controls and features: • Audio output connectors;

• External DC input;
Powering and current consumption: Min. 7 V to max. 18 Volts DC; 2.6 W

• 145 mA at 18 VDC

• 290 mA at 7 VDC
Runtime with SRBATTSLED adapter: 7.2 V, 2200 mAH “L” style battery will

typically provide over 7 hours of operation
Transmitter battery level tracking: LCD display with battery icon or timer

readout
Operating temperature: -20°C to +50°C
Weight: 225 grams (7.9 ozs.) with SREXT adapter

Overall dimensions: 2.92” wide x 1.22” high x 4.93” deep
(with SREXT adapter) (74 mm x 31 mm x 125 mm)

Specications subject to change without notice

ETSI compliant Nu Digital Hybrid Wireless

SmartNR No Limiting W/ Limiting

OFF 103.5 108.0

NORMAL 107.0 111.5

FULL 108.5 113.0

)

®

®

®

®

FCC Notice

NOTE: This equipment has been tested and found to
comply with the limits for a Class B digital device, pur­suant to part 15 of the FCC Rules. These limits are de­signed to provide reasonable protection against harmful
interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to
radio or television reception, which can be determined
by turning the equipment off and on, the user is encour­aged to try to correct the interference by one or more of
the following measures:

30

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment
and receiver.

• Connect the equipment into an outlet on a circuit
different from that to which the receiver is connect­ed.

• Consult the dealer or an experienced radio/TV tech­nician for help.

Changes or modifications to this equipment not ex­pressly approved by Lectrosonics, Inc. could void the
user’s authority to operate it.

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

Service and Repair

If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment
needs repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnect­ing cables and then go through the Troubleshooting section in this manual.

We strongly recommend that you do not try to repair the equipment yourself and do not have the local repair shop
attempt anything other than the simplest repair. If the repair is more complicated than a broken wire or loose connec­tion, send the unit to the factory for repair and service. Don’t attempt to adjust any controls inside the units. Once
set at the factory, the various controls and trimmers do not drift with age or vibration and never require readjustment.
There are no adjustments inside that will make a malfunctioning unit start working.

LECTROSONICS’ Service Department is equipped and staffed to quickly repair your equipment. In warranty repairs
are made at no charge in accordance with the terms of the warranty. Out-of-warranty repairs are charged at a modest
flat rate plus parts and shipping. Since it takes almost as much time and effort to determine what is wrong as it does
to make the repair, there is a charge for an exact quotation. We will be happy to quote approximate charges by phone
for out-of-warranty repairs.

Returning Units for Repair

For timely service, please follow the steps below:

A. DO NOT return equipment to the factory for repair without first contacting us by e-mail or by phone. We need

to know the nature of the problem, the model number and the serial number of the equipment. We also need a
phone number where you can be reached 8 A.M. to 4 P.M. (U.S. Mountain Standard Time).

B. After receiving your request, we will issue you a return authorization number (R.A.). This number will help speed

your repair through our receiving and repair departments. The return authorization number must be clearly shown
on the outside of the shipping container.

C. Pack the equipment carefully and ship to us, shipping costs prepaid. If necessary, we can provide you with the

proper packing materials. UPS or FEDEX is usually the best way to ship the units. Heavy units should be “dou­ble-boxed” for safe transport.

D. We also strongly recommend that you insure the equipment, since we cannot be responsible for loss of or dam-

age to equipment that you ship. Of course, we insure the equipment when we ship it back to you.

®

Lectrosonics USA:

Mailing address: Shipping address: Telephone:

Lectrosonics, Inc. Lectrosonics, Inc. [phone]
PO Box 15900 561 Laser Rd NE, Suite 102 [phone] Toll-free
Rio Rancho, NM 87174 Rio Rancho, NM 87124 [phone] Fax
USA USA

Web: E-mail:
www.lectrosonics.com [e-mail]

Lectrosonics Canada:

Mailing Address: Telephone: E-mail:

720 Spadina Avenue, [phone] Sales: [e-mail]
Suite 600 [phone] Toll-free Service: [e-mail]
Toronto, Ontario M5S 2T9 (877-7LECTRO)
[phone] Fax

Rio Rancho, NM

31

SRc5P and SRc Dual Receivers

Attestation of Conformity

32

LECTROSONICS, INC.

Declaration of Conformity

UHF Digital Hybrid Wireless

®

Rio Rancho, NM

33

SRc5P and SRc Dual Receivers

34

LECTROSONICS, INC.

UHF Digital Hybrid Wireless

®

Rio Rancho, NM

35

LIMITED ONE YEAR WARRANTY

m

The equipment is warranted for one year from date of purchase against defects in
materials or workmanship provided it was purchased from an authorized dealer. This
warranty does not cover equipment which has been abused or damaged by careless
handling or shipping. This warranty does not apply to used or demonstrator equipment.

Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any
defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot
correct the defect in your equipment, it will be replaced at no charge with a similar new
item. Lectrosonics, Inc. will pay for the cost of returning your equipment to you.

This warranty applies only to items returned to Lectrosonics, Inc. or an authorized
dealer, shipping costs prepaid, within one year from the date of purchase.

This Limited Warranty is governed by the laws of the State of New Mexico. It states the
entire liablility of Lectrosonics Inc. and the entire remedy of the purchaser for any
breach of warranty as outlined above. NEITHER LECTROSONICS, INC. NOR
ANYONE INVOLVED IN THE PRODUCTION OR DELIVERY OF THE EQUIPMENT
SHALL BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE, CONSEQUENTIAL,
OR INCIDENTAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
THIS EQUIPMENT EVEN IF LECTROSONICS, INC. HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL THE LIABILITY OF
LECTROSONICS, INC. EXCEED THE PURCHASE PRICE OF ANY DEFECTIVE
EQUIPMENT.

This warranty gives you specific legal rights. You may have additional legal rights which
vary from state to state.

581 Laser Road NE • Rio Rancho, NM 87124 USA • www.lectrosonics.com
[phone] • [phone] • fax [phone] • [e-mail]

12 November 2018