Lectrosonics SRA5P User manual

SRa5P & SRa
Camera Slot Dual UHF Receiver
Featuring
Digital Hybrid Wireless®Technology
INSTRUCTION MANUAL
Rio Rancho, NM, USA
www.lectrosonics.com
Fill in for your records:
Serial Number:
Purchase Date:
U.S. Patent 7,225,135
See Quick Start Summary on page 3

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
2

UHF Digital Hybrid Wireless®
Rio Rancho, NM 3
Digital Hybrid Wireless®
The Lectrosonics Digital Hybrid Wireless®uses innova-
tive technology to combine the advantages of digital
audio with the advantages of analog RF transmission,
thus delivering the superior sound quality of a digital
system and the excellent range of an analog system. A
proprietary algorithm encodes the digital audio informa-
tion 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 com-
promised.
Under weak RF conditions, the received signal de-
grades 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.
Quick Start Summary
The following checklist includes the minimum required
settings to start using the receiver.
• Installeitherstand-aloneorcameraslotadapterkit,
the antennas and position the receiver as it will be
used (see pages 9-12).
• Connectpowertothereceiver(seepages10,11).
• SettheCOMPAT(compatibility)modeforthetrans-
mitters to be used (see pages 15,16).
• Findclearoperatingfrequenciesforoneorboth
receivers (see pages 19-21).
NOTE:Whenoperatinginthe2-channelmode,
always set Receiver 2 to a higher frequency than
Receiver1byleast400kHz(fourstandardsteps
on the switches).
• Settransmittersonthematchingfrequencies(see
transmitter manual).
• Verifytransmittersaresettothesamecompatibility
mode as the receiver (see transmitter manual).
• Adjusttransmitter/sinputgaintomatchvoicelevel
and mic position (see transmitter manual).
• Adjustreceiveroutputlevelasneededforthecam-
era or mixer input level desired (see pages 15,16).
SRa
Inresponsetodemandforexternalantennaconnections
andtheOCTOPACKmulticoupler,thisisthecurrentver-
sion of the basic receiver with detachable whip antennas
and the audio output on the rear panel only.
SRa5P
The current version of the full-featured receiver. De-
tachable whip antennas and second audio output on
left hand side of the front panel.Will also work with the
OCTOPACKmulticoupler.
Model Differences
InthismanualyouwillseeboththeSRa5PandSRapicturedinvariouscontexts.Thereisnofunctionaldifference
betweenthetwomodelsotherthanthesecondoutputjackonthe5Pversion,soeitherreceivermaybeusedaseither
is pictured.

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
4
Table of Contents
Quick Start Summary.............................................................................................................................................................................3
GeneralTechnical Description ..............................................................................................................................................................5
RFFront-EndandMixer........................................................................................................................................................................6
MIicrocontroller,PLLandVCOCircuits.................................................................................................................................................6
IFAmpliersandSAWFilters ...............................................................................................................................................................6
DigitalPulseCountingDetector............................................................................................................................................................6
DSP-Based Pilot Tone...........................................................................................................................................................................6
SmartSquelch™....................................................................................................................................................................................6
Smart Noise Reduction (SmartNR™)....................................................................................................................................................6
Supersonic Noise-Based Dynamic Filter and Squelch .........................................................................................................................7
RF-ControlledDigitalNoiseFilter .........................................................................................................................................................7
AudioOutputLevel...............................................................................................................................................................................7
Test Tone...............................................................................................................................................................................................7
Power Supply........................................................................................................................................................................................7
LCDDisplay ..........................................................................................................................................................................................7
Front Panel Controls and Functions.....................................................................................................................................................8
AudioOutputs .......................................................................................................................................................................................8
LCDScreen ..........................................................................................................................................................................................8
MENU/SELButton ................................................................................................................................................................................8
PWR/BACKButton ...............................................................................................................................................................................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
Battery Adapter...................................................................................................................................................................................10
AudioOutputCables...........................................................................................................................................................................11
ExternalPowerCables........................................................................................................................................................................11
ExternalPowerSupply........................................................................................................................................................................11
Mounting and Orientation....................................................................................................................................................................12
MainWindow (LCD)..............................................................................................................................................................................13
LCD Backlight Setup............................................................................................................................................................................14
Navigating the LCD ..............................................................................................................................................................................15
Main Window.......................................................................................................................................................................................16
Frequency Screen...............................................................................................................................................................................16
Setup Screens ....................................................................................................................................................................................16
Front Panel Shortcuts .........................................................................................................................................................................18
LockingandUnlockingtheFrontPanelControls ................................................................................................................................18
Scanning for Clear Frequencies .........................................................................................................................................................19
ScanViewWindow..............................................................................................................................................................................19
ZoomViewWindow.............................................................................................................................................................................19
Pre-coordinated Frequencies..............................................................................................................................................................20
CompatibleFrequencyTable...............................................................................................................................................................20
CompatibilityDiagram.........................................................................................................................................................................21
Frequency Coordination......................................................................................................................................................................22
Multi-channel System Checkout .........................................................................................................................................................22
Troubleshooting....................................................................................................................................................................................23
Specifications and Features................................................................................................................................................................25
Service and Repair...............................................................................................................................................................................26
Returning Units for Repair ..................................................................................................................................................................26

UHF Digital Hybrid Wireless®
Rio Rancho, NM 5
General Technical Description
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 phase switching, and the optimum antenna
phase.The system also employs “opportunistic switch-
ing”toanalyzeandthenlatchthephaseinthebest
position during brief squelch activity.
Ratio Diversity blends the audio outputs of both receiv-
ers in a seamless manner to produce a single audio
output. A panning circuit blends more signal from the re-
ceiver 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 signal to
noise ratio is increased by 3 dB.
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 per-
formance is extremely stable over a very wide tempera-
ture range, making the receiver perfectly suited to the
rough environmental conditions found in field produc-
tion.
Thefrontpanelfeaturesamenu-drivenLCDinterface
and four membrane switches used to view and alter set-
tings.Audio outputs are provided on the rear panel for
camera slots or other audio devices, and in the case of
the SRa5P, 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 locate RF signals in the vicinity
to simplify finding clear operating frequencies.
RF PCB Block Diagram
Ref. Osc
SAW
filter
RF amp
Splitter
Phase
switch
Mixer IF
amp 243.950 MHz
SAW
filter SAW filter
IF
amp 243.950 MHz
Rx IC
250 kHz
RSSI
Window
detect
Audio 1
Pulse
detector
1st
VCO 2nd
VCO
PLL
µP
SAW
filter RF amp
Splitter
Phase
switch
Mixer IF
amp 248.450 MHz
SAW
filter SAW filter
IF
amp 248.450 MHz
Rx IC
350 kHz
RSSI
Window
detect
Audio 2
Pulse
detector
1st
VCO 2nd
VCO
PLL
µP
Receiver 1
Receiver 2
High side
injection
High side
injection 244.200 MHz
248.800 MHz
SR Dual Receiver RF Board
Audio PCB Block Diagram
µPDSP
Keypad
LCD
display
DAC
Codec
Memory
Ref xtal
Audio 1
Audio 2
(from RF PCB)
To both PLL
To phase switches
Audio amps
Digital pot
Digital pot
µP
digital
atten
CH 1
audio switch
CH 2
audio switch
Fuse
Camera
power in
Osc
sync
DC-DC
conv
DC-DC
conv
DC-DC
conv
On/O
–5V +5V Osc
sync
+1.6V
+3.3
V Reg
+3.3V
5k
5k
50
50 +
–
Com
Hi
Lo
+5V
+5V
5k
5k
50
50 +
–
Com
Hi
Lo
+5V
+5V
Diode
protected
outputs
123
45

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
6
RF Front-End and Mixer
Eachantennasignalisrstpassedthroughahighqual-
itySAWltertorejecthighpowerRFsignalsaboveand
below the operating frequency. A high current amplifier
follows the SAW filters and passes the signal to an in-
ternal splitter so that both antenna signals are available
to both receivers for SmartDiversity™ reception.
The mixer in each receiver takes the signal from the
PLLtogeneratetherstIFsignal,withbothPLLcircuits
fed from a common reference oscillator to maintain
signalphasethroughtheIFsections.
Microcontroller, PLL and VCO Circuits
The 8-bit microprocessor is the “heart” of the SRa5P
andSRareceivers.Itmonitorsusercommandinputs
from the front panel control buttons and numerous other
internal signals such as RF level, audio levels, pilot tone
levelsandtransmitterbatterystatus.Outputsfromthe
microcontrollerdrivetheLCDdisplayandbacklight,
control the squelch and audio output attenuator, the
PLL/VCOcircuitsandtheantennaphaseswitch.
IF Amplifiers and SAW Filters
TherstIFstageat244MHzemploystwostate-of-the-
art SAW (surface acoustic wave) filters.The use of two
filters significantly increases the depth of filtering while
preserving sharp skirts, constant group delay, and wide
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.Sincetheseltersare
madeofquartz,theyareverytemperaturestable.
AftertheSAWlter,the244MHzIFsignalisconverted
to250kHzinreceiver1and350kHzinreceiver2.Only
thenisthemajorityofthegainapplied,justbeforethe
signal is converted to audio with a pulse counting detec-
tor.AlthoughtheseIFfrequenciesareunconventional
inawidedeviation(±75kHz)system,itoffersoutstand-
ingAMrejectiongureoveraverywiderangeofsignal
strengths and produces an excellent noise improvement
at low signal strengths.
Digital Pulse Counting Detector
The receiver uses an elegantly simple, yet highly effec-
tive digital pulse detector to demodulate the FM signal,
rather than a conventional quadrature detector.This
unusual design eliminates thermal drift, improves AM
rejection,andprovidesverylowaudiodistortion.
DSP-Based Pilot Tone
The Digital Hybrid system design uses a DSP gener-
ated ultrasonic pilot tone to control the receiver audio
muting (squelch).Brief delays are applied to eliminate
thumps, pops or other transients that can occur when
the power is turned on or off.The pilot tone frequency
is different for each of the 256 frequencies in the tuning
range of a system (frequency block).This eliminates
squelch problems in multichannel systems where a
pilot tone signal can appear in the wrong receiver via
intermodulation products.The DSP generated pilot tone
also eliminates fragile crystals, allowing the receiver to
survive shocks and mishandling much better than older
analog-based pilot tone systems.
Note:Thisdescriptionappliesonlyin400Series
mode.In200Seriesmode,onlyonepilottone
frequency is used on all channels, emulating
theoriginalcrystal-basedsystem.Inother
compatibility modes, no pilot tone is used.
SmartSquelch™
Any squelching system faces inevitable trade-offs:
squelch too aggressively and valuable audio information
may be lost. Squelch too little and excessive noise may
be heard. Respond too rapidly and the audio will sound
“choppy.” Respond too sluggishly and syllables or entire
words can be cut off.
SmartSquelchTM combines several techniques to achieve
an optimal balance, removing distracting noise, without
thesquelchingactionitselfbecomingadistraction.One
of these techniques involves waiting for a word or syl-
lable to complete before squelching. Another technique
incorporates recent squelching history and recent signal
strength,adjustingsquelchingbehaviordynamicallyfor
the most serviceable result under variable conditions.Us-
ing these and other techniques, the SRa5P and SRa can
deliver acceptable audio quality from otherwise unusable
signals.
Smart Noise Reduction (SmartNR™)
Note:The SmartNR setting is user Selectable
onlyin400Series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atresponseto20kHz,makesitpos-
sibletohearthe-120dBVnoiseoorinthemicpre-
amp, 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, which removes hiss without
sacrificing audio high frequency response.
The Smart Noise Reduction algorithm works by at-
tenuating only those portions of the audio signal that fit
a statistical profile for randomness or “electronic hiss.”
Because it 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.

UHF Digital Hybrid Wireless®
Rio Rancho, NM 7
The Smart Noise Reduction algorithm has three modes,
Selectable from a user setup screen.The optimal set-
tingforeachapplicationissubjectiveandselectedwhile
simply listening.
OFF-nonoisereductionisperformedandcomplete
transparency is preserved. All signals presented to the
transmitter’s analog front end, including any faint micro-
phone hiss, will be faithfully reproduced at the receiver.
NORMAL-enoughnoisereductionisappliedtoremove
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.
FULL - enough noise reduction is applied to remove
most of the hiss from nearly any signal source of rea-
sonable quality and some high frequency environmental
noise, assuming levels are set properly at the transmit-
ter.
Supersonic Noise-Based
Dynamic Filter and Squelch
InadditiontoSmartNR,allhybridreceiversare
equipped with a supersonic noise-based dynamic filter
and squelch system.The incoming audio is monitored
forenergyabove22kHz,pilottoneexcepted.Excessive
high frequency energy indicates that the received signal
is too weak to achieve an acceptable signal-to-noise
ratio. Under marginal conditions, a variable low pass
filter is rolled in dynamically, masking the noise while
preserving as much of the transmitted signal as pos-
sible.When the channel is too noisy even for the filter,
the audio is squelched.
This noise-based filter and squelch system replaces a
more or less equivalent system used for many years,
which based its operation on RF signal strength.Perfor-
mance of the two systems is virtually identical, but the
noise-based system requires no calibration and there
is no better way to track the signal-to-noise ratio than to
measure it directly.
RF-Controlled Digital Noise Filter
Inextremelyweaksignalconditions,anRFsensitive
variable frequency filter is applied to reduce the high
frequency response of the receiver.This filter does
nothinguntiltheRFsignalstrengthdropsbelow3uVat
which point it begins to roll off high frequencies.Usable
audio remains unaffected, but noise-ups or “hits” occur-
ring near the fringe of reception sound much less harsh.
Audio Output Level
Asetupscreenisprovidedforadjustingtheaudioout-
putlevelin1dBincrementsfrom-50to+5dBuusing
thefrontpanelUPandDOWNbuttons.
Test Tone
To assist in matching the audio levels of equipment
connectedtotheSRa5PorSRa,a1kHzaudiotest
tone,adjustablefrom-50to+5dBuin1dBincrements,
is available at the XLR connector.This tone is available
throughtheTONEsetupwindow.
Power Supply
TheSRa5PandSRaisoperatedfromanexternalDC
power source.The power supplies are protected from
damage to the receiver that could occur if a positive
ground power source is applied.
LCD Display
The display has four primary windows. Pressing the
FrontPanelSELbuttonstepsthrougheachofthese
windows.
Ifthebatterygetslowonthetransmitters,amessage
will interrupt the display every few seconds and flash a
low battery warning.
After power is turned off and back on again, the unit
defaults to the main window and to the most recent fre-
quency, audio level, transmitter battery type and other
user settings.These settings are retained even when
the power is turned off. After five minutes of no key ac-
tivity,theLCDbacklightgoesoffandthedisplayreverts
back to the main window.

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
8
Front Panel Controls and Functions
Audio Outputs
Inadditiontotheaudiooutputsontherearpanel,the
front panel of the receiver provides a second set of
outputs through a 5-pin connector. For cameras with
onlyoneaudiochannelenabledintheslot,Itallows
both audio channels to be connected through externals
cables.
The TA5M connector provides two balanced outputs
with the following pinouts:
Pin 1 Pin 2 Pin 3 Pin 4 Pin 5
Shields CH1+ CH1– CH2+ CH2–
LCD Screen
Abacklit,graphics-typeLiquidCrystalDisplayisused
to set up and monitor the receiver.The Main Window
shown here is used during normal operation, to display
RF and audio levels, transmitter battery status, pilot
tone status and diversity activity for both receivers.
MENU/SEL Button
This button is used to select menu items and enter
setup screens during setup.
PWR/BACK Button
PressthePWR/BACKswitchtoturnthepoweron.
Press and hold it until the display goes blank to turn
poweroff.Italsofunctionsasa“back”buttonwhilenavi-
gating 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 is
turned on and off.
PressthePWR/BACKbuttonfromtheMainWindowto
briefly display the external power voltage.
UP/DOWN Arrow Buttons
TheUPandDOWNarrowbuttonsareusedtoselect
variousoptionsandadjustvaluesinthesetupscreens,
and provide secondary functions such as locking out
the panel to guard against accidental changes.
Rear Panel and Adapters
Several different panel adapters are available to config-
ure 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.
Power and audio connections are made through mating
connectors on the adapter and receiver main circuit
boards.
DOWN Button
MENU/SELECT
Button
POWER/BACK
Button
UP Button
Receiver 1 Receiver 2
LCD MainWindow with two channels shown
Audio
Output

UHF Digital Hybrid Wireless®
Rio Rancho, NM 9
Camera Slot Adapters
SRUNI
Adapter kit for Un-
islot®camera slots
such as those pro-
videdonIkegami®
and Panasonic®
cameras.*Includes
bezel,hardware
and rear panel
DB25 connector
wired for power
and audio connec-
tions.
SRSNY
Adapter kit for
Sony®camera
slots,* includes be-
zel,hardwareand
rear panel DB15
connector wired for
power and audio
connections.
Installing Camera Slot Adapters
SRUNI 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.
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.
UniSlot®is a trademark of Ikegami Tsushinki Co., Ltd.
Ikegami®is a registered trademark of IkegamiTsushinki Co., Ltd.
Panasonic®is a registered trademark of Matsushita Electric Industrial Co., Ltd.
Sony®is a registered trademark of Sony Kabushiki Kaisha TA Sony Corporation.

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
10
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 phil-
lips head screws
on the sides of the
housing.
Connections
between the panel
and main circuit
board are made
via miniature mat-
ing connectors.
Align the mating
connectors and
slide the panel
straight into the
housing until the
screw holes align
with the housing.
Adapters for Stand-alone Use
SREXT For stand-alone use,
this kit includes a
rear panel with two
TA3malejacksfor
the balanced out-
puts and a power
jackwithalocking
connector.Trim the
power cable to the
desired length.
SRHARNESS
Idealforuseinpor-
table “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.
Battery Adapter
The receiver can be
powered with an
optional “battery
sled” adapter that
attaches to the
outside of the
housing (Lec-
trosonics Model
SRBATTSLED).
The adapter
includes an inte-
grated connector
plate and accepts L and M type video camera recharge-
able batteries.The adapter sled does not include
charging circuitry. Batteries must be recharged with
their respective chargers.
The unit has an integral circuit that automatically selects
between the battery or the external source, whichever
delivers the highest voltage.
SRSNYSCREWKIT
Contains:
5 - #28863 (smaller mid-length)
5 - #28864 (larger mid-length)
5 - #28869 (shortest)*
* For Housing
SRUNISCREWKIT
Contains:
3 - #28862 (longest)
5 - #28864 (mid-length)
3 - #28869 (shortest)*
* For Housing
Replacement Screw Kits

UHF Digital Hybrid Wireless®
Rio Rancho, NM 11
Audio Output Cables
MCSR5PXLR5P
Right angle TA5F plug
to 5-pin XLR; balanced
outputs; 25 inches long.
For SRa5P/5P outputs.
MCSR5PXLR2
Right angle TA5F plug to
two 3-pin XLR; balanced
outputs; 20 inches long.
For SRa5P/5P outputs.
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.
MCSRPT 12 inch longTA3 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
Male 3.5 mm TRS plug
to two female TA3 (mini
XLR) connectors for
dual channel use.
External Power Supply
 TheCH20powersupply
withalockingLZRpower
 jack;110VACinput,12V
 DCregulatedoutput;400
mA max.
External Power Cables
21747 Locking LZR style plug
to stripped and tinned;
6 feet long.
21746 Locking LZR style plug
to stripped and tinned;
12 inches long.
PS200 Hirose 7-4 pin to LZR
type locking plug, 12”
long.
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.
.475”O.D.
Locking collar with
5/16”-32 thread

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
12
Mounting and Orientation
Installationintotheslotonavideocameraplacesthe
antennas in an optimal vertical position away from the
camera body.
When used with non-slot cameras, as depicted in the
diagram below, one or two receivers can be positioned
in a variety of locations around the camera body using
theVelcroandSRaSLEEVEmountingoptions.
Mounting the receiver horizontally on the side of a camera
can seriously reduce the operating range of the wireless
system.
For maximum operating range, the antennas should be
vertical and above the camera body.While it may be
convenient,mountingthereceiverhorizontallyonthe
side of the camera can seriously reduce the operating
range of the wireless system.
The receiver provides stand-
alone operation with the battery
sled adapter and mounting
sleeve. It can be mounted in
any position with Velcro, or in
horizontal and vertical positions
using the mounting foot.
SRSLEEVE Mount
An optional mounting sleeve is available to simplify
mounting the receiver on camera body, battery brack-
ets and other locations. The sleeve is furnished with a
hook/loopVelcroswatchformountingonatsurfaces.
SRHARDWARE Cold Foot Adapter
ThishardwareandadapterkitallowstheSRSLEEVEto
be mounted on a “cold shoe.” A right angle bracket is in-
cludedsothesleevecanbemountedinahorizontalor
verticalposition.Verticalmountingisgenerallypreferred
becausetheantennaswillprovideacircular,horizontal
pattern. For indoor applications where multipath reflec-
tions are prevalent, the best antenna orientation can be
discovered by simple walk test while observing the RF
levelindicatorsonthereceiverLCD.
RATPAC Connector
The5-pinRATPACrightangleconnectorisdesignedfor
thefrontpaneloutputjack.The3-pinversionisde-
signed 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.

UHF Digital Hybrid Wireless®
Rio Rancho, NM 13
21
22 23 24 25 26 27 28 29
20 19
470
944
Note: Check the scale of your printout.This line should be 6.00 inches long (152.4 mm).
Whip Length
 BLOCK FREQUENCY CAP ANTENNA
  RANGE COLOR WHIPLENGTH
470 470.100-495.600 Black 5.48”
19 486.400-511.900 Black 5.20”
20 512.000-537.500 Black 4.95”
21 537.600-563.100 Brown 4.74”
22 563.200-588.700 Red 4.48”
23 588.800-614.300 Orange 4.24”
24 614.400-639.900 Yellow 4.01”
25 640.000-665.500 Green 3.81”
26 665.600-691.100 Blue 3.62”
Whip Antennas
Lectrosonics AMM Series UHF transmitter antennas
follow the color code specifications in the chart below to
identify operating frequency block range.(The frequen-
cy block range is engraved on the outside housing for
eachindividualtransmitter.)Ifasituationexistswhereby
the antenna is defective and the antenna cap is miss-
ing, refer to the following chart to determine the correct
replacement antenna.

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
14
The hinged joint pivots in both
32
470
944
33
31
21
22
23 24
25 26 27
28 29
30
20
19
AMJ KIT CUTTINGTEMPLATE
Lay uncut antenna on this template and cut to length for the desired frequency block
Note: Check the scale of your printout.This line should be 6.00 inches long (152.4 mm).
Whip Length
Trim the end of the color cap and slide the remaining sleeve over the whip - OR - Glue color cap onto the end
*Cut end of cap off
and slide over whip Frequency Blocks *Color cap
Jointed Whip Antennas
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direc-
tions for positioning the whip at any desired angle.
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
BLOCK FREQUENCY CAP/SLEEVE ANTENNA
 RANGE COLOR WHIPLENGTH

UHF Digital Hybrid Wireless®
Rio Rancho, NM 15
Main Window (LCD)
The Main Window displays information concerning the
condition of the Pilot Tone, antenna phase, RF and
audio signal levels and battery conditions for both the
receiver and the associated transmitter.
PressingtheSEL/SELbuttonaccessestheSELselec-
tions for setting up the receiver and searching for clear
frequency channels.
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400Series,200
Series 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SELand
presstheUPbuttonbriey.TobypassorenablethepilottoneonReceiver2,holdSELandpressthe
DOWNbuttonbriey.Bypassingthepilottonealsodisablesthesquelch,regardlessofwhichcompat-
ibility mode has been selected.
Antenna Phase Indicator
Thisiconantenna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(400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guage”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ac-
cumulatedtimeevenwhenthereceiverisoff.Theiconrepresentsadigitalclockreadout(rotated90
degrees) and in this example is indicating 4 minutes.To reset the battery timer, change the selec-
tion inTXBAT to something other than a timer mode (NOT AAT or 9VT).
Icon Description
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
RF Level Audio Level
Transmitter
Battery Level
PilotTone
Indicator
Receiver 1 Receiver 2 Diversity
Activity

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
16
HYB
SETUP
(item) 180
652.800
2AF
657.500
TUNING
MENU BACK
BACK MENU
Receiver 1
Pilot Tone
ON\OFF
Hold MENU and
hold DOWN
Hold MENU
and hold UP Mute Audio on
Receiver 1
Mute Audio on
Receiver 2
Press
UP/DOWN
to select
Press
UP/DOWN
to adjust
RECEIVER 1
00 00 00
RECEIVER 2
SEL
BACK SEL
SEL
BACK
SEL
SCANNING
STARTS
SEL
SCANNING
STOPS Press
SEL to
select
receiver
Press UP/DOWN
to scroll
frequency
Press both
UP and DOWN
to ZOOM
Press UP/DOWN
to scroll
frequency
MENU
BACK
Setup Window
Main Window
Receiver 1
Receiver 2
Press UP/DOWN to change frequency
Press UP/DOWN to change frequency
DIVMOD
RATIO
Press
UP/DOWN
to select
NOTE: Main Window will look like this
when the RATIO DIV mode is selected.
LEVEL LEVEL 00
DOWN
DOWN
DOWN
DOWN
DOWN
DOWN
DOWN
DOWN
DOWN
SEL
BACK COMPAT
HYB HYB HYB
COMPAT
B3
B3
2
4A
1
5E
BACK
BACK
ZOOM GRAPHIC
BACK
SEL
BACK
RECEIVER 1 RECEIVER 2
Press
UP/DOWN
to select
SEL
BACK TUNING TUNING
RECEIVER 1 RECEIVER 2
Press
UP/DOWN
to select
a
NOR a
NOR
Press
SEL to
select
receiver
Press
SEL to
select
receiver
SEL
BACK SmtNR SmtNR
RECEIVER 1 RECEIVER 2
Press
UP/DOWN
to select
FULNOR
Press
SEL to
select
receiver FUL
NOR
LEVEL
SETUP
SCAN
SETUP
DIVMODE
SETUP
COMPAT
SETUP
SmtNR
SETUP
PHASE
SETUP
TXBAT
SETUP
MIXMODE
SETUP
TONE
SETUP
SEL
BACK PHASE PHASE
RECEIVER 1 RECEIVER 2
Press
UP/DOWN
to select
Press
SEL to
select
receiver
++
SEL
BACK TXBAT TXBAT
RECEIVER 1 RECEIVER 2
Press
UP/DOWN
to select
Press
SEL to
select
receiver
SEL
BACK MIXMODE Press
UP/DOWN
to select
SEL
BACK TONE?
RECEIVER 1 RECEIVER 2
Press
UP/DOWN
to select
Press
SEL to
select
receiver
00+05
Tone will be enabled
when level is set with
the UP/DOWN buttons
TONE? 00+05 LVL 1K
RECEIVER 1
00+05
BACK
UP
UP
UP
UP
UP
UP
UP
UP
UP
DOWN
RATIO 80
652.800 When the receivers are combined in the
RATIO DIVERSITY mode, the frequency
screen will look like this.
MIXBOTH
DOWN
MIXTRIM
SETUP SEL
BACK MIXTRIM
UP
00+05 MIXTRIM
Press
SEL to
select
receiver 00 +05 Press
UP/DOWN
to select
Receiver 2
Pilot Tone
ON/OFF
Hold MENU and
press UP
momentarily
Hold MENU and
press DOWN
momentarily
9V 9V 9V
9V
IMPORTANT:
FREQ.
WARNING
Performance will be degraded if
Receiver 1 is set 4.2 to 4.8 MHz higher
than Receiver 2.The LCD will also flash
this message periodically.
Receiver 2 should always be set to a higher frequency
than Receiver 1 by at least 400 kHz (four standard steps).
Navigating the LCD
NOTE:Thissettingdoesnot
appearwhentheMIXMODE
issettoDIRECT
NOTE:Pressthe
BACKbuttonfrom
the Main Window
to briefly display
the external power
supply voltage.
NOTE:Toresetthetimer,settheTXBAT
modetoanythingotherthan9VTorAAT,
then back to the desired mode.

UHF Digital Hybrid Wireless®
Rio Rancho, NM 17
Main Window
TheappearanceoftheLCDMainWindowwillchange
according to which diversity mode Selected.When set
toSWITCH,thescreenwillbesplittoshowbothreceiv-
ers at the same time.
WiththeDIVMODEset
toSWITCHED,twoaudio
channels will be displayed.
WhensettoRATIO,asingleaudiochannelisdisplayed
since the receiver are combined to pick up the same
transmitter.
WiththeDIVMODEsetto
RATIO,asingleaudiochannel
will be displayed.
Frequency Screen
Press Sel from the Main Window once for Receiver 1
and twice for Receiver 2.The Selected receiver is de-
noted in the upper left corner of the screen.
PressBACKtomovefrom
Receiver 2 back to Receiver 1
180
652.800
2A
F
657.500
Inthisexample,theupperscreendenotesthatreceiver
1issetat652.800MHz,requiringthatthecorrespond-
ingtransmitterhexswitchesbesetat80forthisfre-
quency.LectrosonicstransmitterswithLCDinterfaces
allowfrequencytobesetinMHzorhexsettings.
Press the Up and Down buttons to change the frequen-
cyofthereceiver.WhentheTUNINGmodeissetto
NORMAL,theSELUpandDownbuttonstuneinsingle
channelincrements.Inthegrouptuningmodes,theUp
and Down buttons step through the pre-coordinated
frequencies.
NOTE:Whenoperatinginthe2-channelmode,
always set Receiver 2 to a higher frequency than
Receiver1byleast400kHz(fourstandardsteps).
Inaddition,receiverperformancewillbedegraded
ifReceiver1isbetween4.2and4.8MHzhigher
thanReceiver2,atwhichtimetheLCDwill
periodically flash this message: FREQ.
WARNING
Setup Screens
FromtheMainWindow,pressSELthreetimesto
enterthesetupSEL.PressUPand/orDOWNtoscroll
throughtheavailableSELitems.PressSELtoenter
thesetupscreenfortheselectedSELitem.Forthose
SELitemsthatallowseparatesettingsforeachre-
ceiver,press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.Press
BACKtoreturntothesetupSELtoselectthenextitem.
LEVEL
This setup screen displays the audio output level of the
receiverindBu.UsetheSELUporDownbuttonsto
changethelevel.Rangeisfrom-50to+5dBuin1dB
steps.PresstheSELbuttontoleavethisscreen.
Theoutputlevelsatthetwojacksmaybesetindepen-
dently, regardless of the diversity mode setting.
SCAN
This function provides a fast and reliable method of
ndingclearchannelsforeachreceiver.PressSELto
start the scanning. Follow the procedure outlined in the
navigation map on the previous page and on the page
entitledScanningforClearFrequenciesforinstructions
on using the scanner to find clear channels.
DIVMODE
TheSWITCHdiversitymodeallowsthetwointernal
receivers to operate independently on different frequen-
cies and settings with two different transmitters.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receiv-
ers to pick up the same transmitter and mix their audio
outputsforratiodiversityreception.Inthismode,the
setup screens will prompt you for a single value which
will automatically be set for both receivers.
COMPAT
The COMPAT setup screen selects the type of transmit-
ter used with the receiver.The available modes are:
• HYB is used with Lectrosonics Digital Hybrid trans-
mitters.This is the default setting and should be
used if your transmitter supports it.This mode offers
the best audio quality.
• 100forLectrosonics100Seriestransmitters.
• 200forLectrosonics200Seriestransmitters.
• IFBforLectrosonicsIFBtransmitters.
• M.3 and M.6 are compatible with certain non-
Lectrosonicstransmitters.Contactthefactoryfor
details.
TUNING
Inadditiontothe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.

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
18
• 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)and
not the operating frequency. Actual operating
frequencies are chosen through the Frequency
Screens.
InGrouptuningmodes,theUPandDOWNbuttons
navigate among the Selected frequencies in the group.
When a tuning group is
Selected, a letter will appear
next to the hex switch settings.
105
640.500
a
HoldingtheSELbuttonwhilepressingtheUPor
DOWNbuttonwillsteptothenextfrequencyin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.
The letter will blink when
a frequency outside of the
tuning group is Selected.
105
640.500
a
When no frequencies are stored in groups u and v, the
UPandDOWNbuttonswillfunctionthesameasin
theNORMALmode(eachpressmovesupordownin
100kHzsteps).
When only one frequency is stored in group u or v, the
UPandDOWNbuttonswillnotchangethefrequency.In
thiscase,holdtheSELbuttoninandthenpressUPor
DOWNtoscrolltothedesiredfrequency.
To add a frequency to tuning either group u or v, Select
the desired frequency as in the previous paragraph,
thenholdtheSELbuttonin,thenholdtheUPorDOWN
button in until the letter stops blinking.
To delete a stored frequency, select it with the UP and
DOWNbuttons,thenholdtheSELbuttonin,thenhold
theUPorDOWNbuttoninuntiltheletterstartsblinking.
SHORTCUT:HoldtheMENUbuttoninwhile
pressingtheUPorDOWNarrowtojumpin
16channelincrements(1.6MHzsteps).Ifthe
TUNINGmodeissettoagroup,itwillstillstepup
or down in the same 16 channel increment, which
will likely tune to a frequency that is not included in
the group (letter will blink in this case).
SmtNR
Thissetupscreenisavailableonlyinthe400Series
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 environ-
ments 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.
PHASE
This setup screen allows the audio output phase to be
inverted to compensate for situations such as phase
inversion caused by microphone wiring.
TXBAT
This setup screen allows you to Select the exact battery
being used in the transmitter to provide more accurate
battery level monitoring.
WhentheCOMPATmodeissettoHYB(hybrid)orthe
200Seriesmode,theselchoicesare:
• 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.This is the best choice when using a re-
chargeable battery in the transmitter.
• AA - Transmitter uses a AA alkaline battery.
• AAL - Transmitter uses a AA lithium battery (not
rechargeable).
• AAT - Transmitter uses an AA battery.This is the
best choice when using a rechargeable battery in
the transmitter.
The9VTandAATsettingsaremostusefulfor
NiMH batteries as they do not exhibit reliably
identifiable voltage drops as they discharge.
Incompatibilitymodesotherthan400Series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9VTorAAT,thenbacktothe
desired mode.

UHF Digital Hybrid Wireless®
Rio Rancho, NM 19
MIXTRIM and MIXMODE
Since this is a dual receiver that can be used with cam-
eras that offer only a single input in the slot, special op-
tions 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LEVELsettingintheother
setup screen (see previous page) is hardware-
based and affects the output level regardless
ofwhichmixmodeisselected.MIXTRIMthen
applies attenuation to that level setting resulting in
thenalleveldeliveredtotheoutputchannel.Itis
goodpracticetosettheLEVELofbothreceivers
to the same value when using a mix mode.
WhenaMIXMODEisSelected,eachaudiosignalisau-
tomatically 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.The same input gain
on the camera or mixer can generally be used regard-
less of whether or not a mix mode is being used in the
receiver.
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.
The first screen prompts you
topresstheUPorDOWN
button to start the tone.
RECEIVER 2
TONE? 00+05
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 oper-
ating 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 receiver selection option
(switching diversity mode with two separate receivers).
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.
For example, in the Setup Levels screen, holding the
MENUbuttonandpressingtheUParrowwillcopythe
value from Receiver 2 to Receiver 1.The arrow key
determines the “destination” of the value setting.UP
setsthevalueonReceiver1,andDOWNsetsthevalue
on Receiver 2.
+05 00 00
LEVEL LEVEL 00
Hold MENU and
press UP arrow
To copy the value from Receiver 1 to Receiver 2, hold
theMENUbuttonandthenpresstheDOWNarrow.
NOTE:Itdoesnotmatterwhichreceiveris
selected (highlighted).
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”count-
down takes place.When the countdown is complete
the state is reversed and the new state is displayed as
LOCKEDorUNLOCKED.
LCD Backlight Setup
Hold the UP arrow and turn on the power.The unit will
bootupthendisplaytheBacklightOptionsscreen.Use
theUPandDOWNarrowstoselectthedesiredback-
light operating mode.
DOWN
DOWN
ON
BKLIGHT
30 SEC
BKLIGHT
OFF
BKLIGHT
UP
UP
DOWN
5 MIN
BKLIGHT
UP
Remains on
Dims after 30 seconds
Dims after 5 minutes
Remains off

SRa5P and SRa Dual Receivers
LECTROSONICS, INC.
20
Spectrum scanning with the receiver itself is the best
way to find clear operating frequencies, since it will
reveal all RF signals present in the receiver, including
thosegeneratedbyIM(intermodulation).
NavigatetotheSetupScanscreenandpresstheSEL
button to start the scanner.The display will switch to the
SCANWINDOWandstartscanningimmediately.Allow
the receiver to scan.
Scroll through the screen and find a frequency where
no RF signals (or in the worst case, only very weak RF
signals) are present.With the cursor on this frequency,
simultaneouslypresstheSELUp,DownandSELbut-
tons to leave the scan mode.
Data gathered during a scan is stored until it is inten-
tionally 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stopscanning,presstheSELbuttononce.Thescan-
ning will stop immediately, and the display will switch to
theVIEWwindow.PressingtheUPorDOWNbuttons
will scroll the cursor coarsely across the tuning range.
The transmitter switch settings matching the frequency
indicated by the cursor are shown in the upper right
corner of the screen.
Scanning for Clear Frequencies
PressboththeUPandDOWNbuttonsatthesame
timetoswitchtotheZoomView.Inthisview,thecursor
remains fixed in the center of the screen and the back-
ground scrolls behind it.The frequency can be stepped
upanddownin100kHzincrementsusingtheUPand
DOWNarrowbuttons.
To clear the scan memory and screens, press the
back button repeatedly to return to the Main Window,
then press and hold the PWR 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 switches to the same settings as
shown on the display, turn the transmitter on and verify
that a strong RF signal is present.
NOTE:Whenoperatinginthe2-channelmode,
always set Receiver 2 to a higher frequency than
Receiver1byleast400kHz(four100kHzsteps
on the switches).
Scan View Window
RF Signal
indicators
Transmitter
Switch Settings
Cursor (center bar)
SCROLL
reminders
Zoom View Window
Transmitter Switch Settings
for the currently tuned
frequency.
Dashed line (cursor)
shows the currently
tuned frequency.
RF activity level.
70
1
Previously tuned
frequency
B3
Press both UP and
DOWN arrows on
control panel to switch
to the ZoomView
Press the BACK
button to return
to the ScanView
Window