Lectrosonics DPR-A User manual

DPR-A
Digital Plug-On Transmitter
DPR-A, DPR-A
/E01, DPR-A/E01-B1C1
INSTRUCTION MANUAL
Rio Rancho, NM, USA
www.lectrosonics.com
Fill in for your records:
Serial Number:
Purchase Date:
WARNING: Moisture, including talent’s
sweat, will damage the transmitter. Wrap
the DPR-A in our specially-designed silicone
sleeve (DPRCVR) or other protection to avoid
damage.

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
2
Consumer Alert for US Users - FCC Order DA 10-92
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system
without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power
level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should
also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change.
For more information, call the FCC at 1-888- CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at
www.fcc.gov/cgb/wirelessmicrophones. To operate wireless microphone systems at power greater than 50mW, you must qualify
as a Part 74 user and be licensed. If you qualify and wish to apply for a license go to: http://www.fcc.gov/Forms/Form601/601.
html

Digital Plug-On Transmitter
Rio Rancho, NM 3
Table of Contents
General Technical Description .......................................... 4
Low Frequency Roll-Off.................................................... 4
Input Limiter ...................................................................... 4
Control Panel .................................................................... 4
Alternate Recording Function .......................................... 4
Encryption ......................................................................... 4
Features................................................................................ 5
LCD Screen ....................................................................... 5
Power LED ........................................................................ 5
Key LED............................................................................. 5
Modulation LEDs .............................................................. 5
MENU/SEL Button ............................................................ 5
BACK Button ............................................................. 5
UP/DOWN Arrow Buttons................................................. 5
Menu Shortcuts ................................................................ 5
Audio Input Jack............................................................... 5
Antenna ............................................................................. 5
IR (infrared) Port................................................................ 5
Battery Installation .............................................................. 6
Attaching/Removing a Microphone................................... 6
Operating Instructions ........................................................ 7
Powering On in Operating Mode...................................... 7
Powering On in Standby Mode ........................................ 7
Powering Off ..................................................................... 7
Transmitter Operating Instructions .................................. 7
Recorder Operating Instructions ....................................... 8
Formatting SD Card.......................................................... 8
IMPORTANT ....................................................................... 9
iXML HEADER SUPPORT................................................. 9
Compatibility withmicroSDHC memory cards.................. 9
DPR Menu ............................................................................ 10
Setup Screen Details .......................................................... 12
Main Window Indicators................................................... 12
Turning Control Panel LEDs ON/OFF............................... 12
Helpful Features on Receivers ......................................... 12
Input Menu ........................................................................... 12
Adjusting the Input Gain................................................... 12
Selecting the Low Frequency Roll-off.............................. 13
Selecting Audio Polarity (Phase)...................................... 13
Selecting Phantom Power Supply ................................... 13
Xmit Menu ............................................................................ 14
Selecting Frequency......................................................... 14
Setting Transmitter Output Power ................................... 14
Turning Rf Output On........................................................ 14
SDCard Menu....................................................................... 14
Record or Stop ................................................................. 14
Setting Scene and Take Number...................................... 14
Formatting microSDHC Memory Card............................. 14
Recorded File Naming ..................................................... 14
microSDHC Memory Card Info......................................... 15
Load Tuning Group ........................................................... 15
Save Tuning Group ........................................................... 15
TCode Menu......................................................................... 15
TC Jam (jam timecode)..................................................... 15
Setting Frame Rate........................................................... 15
Use Clock.......................................................................... 15
Key Menu ............................................................................. 16
KeyType............................................................................. 16
SendKey ............................................................................ 16
Setup Menu.......................................................................... 16
Setting Auto On................................................................. 16
Enabling Remote Function ............................................... 16
Setting Battery Type ......................................................... 16
Setting Battery Timer........................................................ 17
Setting Date and Time (Clock) ......................................... 17
Locking/Unlocking Settings ............................................. 17
Backlit Settings................................................................. 17
Turn LEDs On/Off.............................................................. 17
Restoring Default Settings ............................................... 17
About .................................................................................... 17
LectroRM.............................................................................. 18
Supplied & Optional Accessories....................................... 19
21750 Barrel Adapter........................................................ 19
MCA-M30 Barrel Adapter ................................................. 19
DPRACVR/DPRACVR-BLK............................................... 19
PHTRAN3 .......................................................................... 19
MCA5X .............................................................................. 19
MCA-TPOWER.................................................................. 19
Specications and Features............................................... 20
Transmitter ........................................................................ 20
Firmware Update ................................................................. 21
Recovery Process ............................................................... 22
Service and Repair .............................................................. 23
Returning Units for Repair................................................ 23

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
4
Input Limiter
A DSP-controlled analog audio limiter is employed
before the analog-to-digital (A-D) converter. The limiter
has a range of more than 30 dB for excellent overload
protection. A dual release envelope makes the limiter
acoustically transparent while maintaining low distor-
tion. It can be thought of as two limiters in series, a fast
attack and release limiter followed by a slow attack and
release limiter. The limiter recovers quickly from brief
transients, with no audible side eects, and also recov-
ers slowly from sustained high levels, to keep audio dis-
tortion low and while preserving short term dynamics.
Control Panel
The control panel includes five membrane switches and
an LCD screen to adjust the operational settings. Multi-
color LEDs are used to indicate audio signal levels for
accurate gain adjustment, battery status and encryption
key function.
Alternate Recording Function
The DPR has a built in recording function for use in
situations where RF may not be possible or to work as
a stand alone recorder. The record function and trans-
mit functions are exclusive of each other - you cannot
record AND transmit at the same time. When the unit is
transmitting and recording is turned on, the audio in the
RF transmission will stop, but the battery status will still
be sent to the receiver.
The recorder samples at 48 kHz rate with a 24 bit
sample depth. The micro SDHC card also oers easy
rmware update capabilities without the need for a USB
cable or driver issues.
Encryption
When transmitting audio, there are situations where
privacy is essential, such as during professional sport-
ing events, in court rooms or private meetings. For
instances where your audio transmission needs to be
kept secure, without sacricing audio quality, Lectroson-
ics implements AES256 encryption in our digital wire-
less microphone systems. High entropy encryption keys
are rst created by a Lectrosonics receiver such as the
DSQD Receiver. The key is then synced with the DPR
via the IR port. The transmission will be encrypted and
can only be decoded if the receiver and transmitter have
matching encryption keys. If you are trying to transmit
an audio signal and keys do not match, all that will be
heard is silence.
General Technical
Description
The Lectrosonics DPR-A digital plug-On transmitter
benets from a fourth generation design with specially
developed, high eciency digital circuitry for extended
operating time on two AA batteries. The unique design
provides several distinct features for professional ap-
plications:
• Outstanding UHF operating range
• Superb audio quality
• On board recording
• Corrosion-resistant housing
The transmitter uses a standard 3-pin XLR input jack for
use with any microphone with a mating XLR connector.
An LCD, membrane switches and multi-color LEDs on
the control panel make input gain adjustments and fre-
quency selection quick and accurate, without having to
view the receiver. The housing is machined from a solid
aluminum block to provide a lightweight and rugged
package. A special non-corrosive nish resists salt wa-
ter exposure and perspiration in extreme environments.
The DSP controlled input limiter features a wide range
dual envelope design which cleanly limits input signal
peaks over 30 dB above full modulation. Switching power
supplies provide constant voltages to the transmitter
circuits from the beginning (3 Volts) to the end (1.7 Volts)
of battery life, and an ultra low noise input amplier for
quiet operation.
The DPR-A has an external SMA antenna jack, which
accepts Lectrosonics steel ex wire AMM or AMJ series
antennas.
Low Frequency Roll-O
The low frequency roll-o can be set for a 3 dB down
point at 25, 35, 50, 70, 100, 120 and 150 Hz to control
subsonic and very low frequency audio content in the
audio. The actual roll-o frequency will vary slightly de-
pending upon the low frequency response of the micro-
phone.
Excessive low frequency content can drive the trans-
mitter into limiting, or in the case of high level sound
systems, even cause damage to loudspeaker systems.
The roll-o is normally adjusted by ear while listening as
the system is operating.

Digital Plug-On Transmitter
Rio Rancho, NM 5
Features
LCD Screen
The LCD is a numeric-type Liquid Crystal Display with
several screens that allow settings to be made with the
MENU/SEL and BACK buttons, and the UP and DOWN
arrow buttons to congure the transmitter. The trans-
mitter can be turned on in a “standby” mode with the
carrier turned o to make adjustments without the risk
of interfering with other wireless systems nearby.
Power LED
The PWR LED glows green when the batteries are
charged. The color changes to red when there is about
20 minutes of life left. When the LED begins to blink red,
there are only a few minutes of life.
A weak battery will sometimes cause the PWR LED to
glow green immediately after being put into the unit, but
will soon discharge to the point where the LED will go
red or shut o completely.
Key LED
The blue Key LED will blink if an encryption key is not
set and “no key” will blink on LCD. The Key LED will
remain on if the encryption is set correctly and will turn
o in Standby mode.
Modulation LEDs
The Modulation LEDs provide a visual indication of the
input audio signal level from the microphone. These two
bicolor LEDs can glow either red or green to indicate
modulation levels. Full modulation (0 dB) occurs when
the -20 LED rst turns red.
Signal Level -20 LED -10 LED
Less than -20 dB O O
-20 dB to -10 dB Green O
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 dB Red Red
MENU/SEL Button
The MENU/SEL button is used to display the transmit-
ter menu items. Press once to open the menu, then use
the UP and DOWN arrows to scroll menu items. Press
MENU/SEL again to choose an option from the menu.
BACK Button
Once a selection is made in a menu, press the BACK
Button to save your selection and go back to the previ-
ous menu.
UP/DOWN Arrow Buttons
The UP and DOWN arrow buttons are used to scroll
through menu options.
From the Main Screen, use the UP Arrow to turn the
LEDs on and the DOWN Arrow to turn the LEDs o.
Menu Shortcuts
From the main/home screen, the following menu short-
cuts are available:
Simultaneous press of BACK button +UP arrow
button: Begin record
Simultaneous press of BACK button + DOWN arrow
button: Stop record
Press MENU/SEL: Shortcut to adjust input gain
menu
Press the UP arrow button to turn the control panel
LEDs on; press the DOWN arrow button to turn
them o
Audio Input Jack
The 3 pin female XLR to AES standard balanced input
jack on the transmitter accommodates hand-held, shot-
gun and measurement microphones. Phantom power
can be set at various levels for use with a wide variety of
electret microphones.
Antenna
The DPR-A has an external SMA antenna jack, which
accepts Lectrosonics steel ex wire AMM or AMJ series
antennas.
IR (infrared) Port
The IR port is available on the side of the transmitter for
quick setup using a receiver with this function available.
IR Sync will transfer the settings for frequency from the
receiver to the transmitter.
IR Port
Battery Compartment
XLR Input Jack
MENU/SEL Button
LCD
Input
Coupler
BACK Button
Modulation
LEDs PWR LED
UP Arrow
DOWN
Arrow
KEY LED
POWER Button

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
6
Battery Installation
The battery compartment door is made of machined alu-
minum and is hinged to the housing to prevent it being
damaged or lost.
The transmitter is powered by two AA batteries.
Note: Standard zinc-carbon batteries marked
“heavy-duty” or “long-lasting” are not
adequate.
To install new batteries:
1. Slide open the Battery Cover and remove any old
batteries.
2. Insert the new batteries into the housing. One bat-
tery goes in positive (+) end rst, the other negative
(-) end rst. Look into the battery compartment to
determine which end goes in which side. The side
with the circular insulator is the side which accepts
the positive end of the battery.
positive (+)
terminal
negative (–)
terminal
Note: It is possible to install the batteries
backward and close the battery door, but the
batteries will not make contact and the unit will
not power up.
3. Slide the Battery Cover until it snaps securely shut.
BATTERY CAUTION: Risk of explosion if the
battery is replaced by an incorrect type.
Attaching/Removing a
Microphone
The spring loaded coupler under the XLR jack main-
tains a secure t to the microphone jack with continu-
ous pressure applied by an internal spring.
To attach the microphone, simply align the XLR pins
and press the microphone onto the transmitter until the
coupler retracts and latches. A click sound will be heard
as the connector latches.
To remove the microphone, hold the transmitter body
in one hand with the microphone pointing upward. Use
your other hand to rotate the coupler until the latch
releases and the coupler rises slightly.
Do not pull on the microphone while releasing the lock-
ing collar.
TO AT TA CH
TO REMOVE
Hold the
transmitter
case with the
microphone
pointed
upward.
Rotate the
collar in the
direction
shown.
Pull on mic to ensure it is locked.
Press firmly, listen for click.
Depress collar fully.
Click!
NOTE: Do not hold or apply any pressure to
the microphone body while trying to remove it,
as this may prevent the latch from releasing.

Digital Plug-On Transmitter
Rio Rancho, NM 7
Operating Instructions
MENU/SEL Button BACK Button
Modulation
LEDs
PWR LEDUP Arrow
DOWN
Arrow
KEY LED
POWER Button
Turning Power ON
Powering On in Operating Mode
Press and hold the POWER Button briey until the prog-
ress bar on the LCD nishes.
When you release the button, the unit will be operational
with the RF output turned on and the Main Window dis-
played.
Hold
for
Rf On DPr
00 : 02 : 37
-20 +0
470.100
-40
RF indicator not blinking
Hold power
button until
the progress
bar nishes
Powering On in Standby Mode
DPr
00 : 02 : 37
-20 +0
470.100
-40
RF indicator blinks A brief press of the POWER button
and releasing it before the progress
bar nishes, will turn the unit on with
the RF output turned o. In this
Standby Mode the menus can be
browsed to make settings and
adjustments without the risk of
interfering with other
wireless systems nearby.
Powering O
Powering
O...
To turn the unit o, hold the POWER
Button in briey and wait for the
progress bar to nish. If the POWER
button is released before the progress
bar nishes, the unit will remain turned
on and the LCD will return to the same
screen or menu that was displayed
previously.
Transmitter Operating Instructions
• Install battery(s)
• Turn power on in the Standby mode (see previ-
ous section)
• Connect microphone and place it in the position
where it will be used.
• Have the user talk or sing at the same level that
will be used in the production, and adjust the
input gain so that the -20 LED blinks red on
louder peaks.
Input...
Gain
Rolloff
Polarity -40 -20 +0
Gain
22
Use the UP and DOWN
arrow buttons to adjust
the gain until the -20
LED blinks red on
louder peaks
Signal Level -20 LED -10 LED
Less than -20 dB O O
-20 dB to -10 dB Green O
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 dB Red Red
• Set the frequency to match the receiver.
• Set encryption key type and sync with receiver.
• Turn the power o and then back on while hold-
ing the POWER button in and waiting until the
progress bar nishes.

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
8
Recorder Operating
Instructions
• Install battery(s)
• Insert microSDHC memory card
• Turn power on
• Format memory card
• Connect microphone and place it in the position
where it will be used.
• Have the user talk or sing at the same level that
will be used in the production, and adjust the
input gain so that the -20 LED blinks red on
louder peaks.
Input...
Gain
Rolloff
Polarity -40 -20 +0
Gain
22
Use the UP and DOWN
arrow buttons to adjust
the gain until the -20
LED blinks red on
louder peaks
Signal Level -20 LED -10 LED
Less than -20 dB O O
-20 dB to -10 dB Green O
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 dB Red Red
• Press MENU/SEL, choose SDCard and Record
from the menu
-20 +0 -40
REC
542.000
SDCard...
Record
Files
Ta kes
RECORD-
ING
• To stop recording, press MENU/SEL, choose
SDCard and Stop; the word SAVED appears on
the screen
SAVED
SDCard...
Stop
Files
Ta kes
DPr
00 : 02 : 37
-20 +0
470.100
-40
NOTE: Record and Stop Recording may also
be achieved by shortcut keys from the main/
home screen:
• Simultaneous press of BACK button +UP
arrow button: Begin record
•Simultaneous press of BACK button +
DOWN arrow button: Stop record
microSDHC
memory card
port
TC Jam
port
Formatting SD Card
New microSDHC memory cards come pre-formatted
with a FAT32 le system which is optimized for good
performance. The DPR relies on this performance and
will never disturb the underlying low level formatting of
the SD card. When the DPR “formats” a card, it performs
a function similar to the Windows “Quick Format” which
deletes all les and prepares the card for recording.
The card can be read by any standard computer but if
any write, edit or deletions are made to the card by the
computer, the card must be re-formatted with the DPR
to prepare it again for recording. The DPR never low level
formats a card and we strongly advise against doing so
with the computer.
To format the card with the DPR, select Format Card in
the menu and press MENU/SEL on the keypad.
NOTE: An error message will appear if samples
are lost due to a poor performing “slow” card.
WARNING: Do not perform a low level format (com-
plete format) with a computer. Doing so may render the
memory card unusable with the DPR recorder.
With a windows based computer, be sure to check the
quick format box before formatting the card.
With a Mac, choose MS-DOS (FAT).
IMPORTANT
The formatting of the SD card sets up contiguous sectors
for maximum eciency in the recording process. The
le format utilizes the BEXT (Broadcast Extension) wave
format which has sucient data space in the header for
the le information and the time code imprint.
The SD card, as formatted by the DPR recorder, can be
corrupted by any attempt to directly edit, change, format
or view the les on a computer.
The simplest way to prevent data corruption is to copy
the .wav les from the card to a computer or other Win-
dows or OS formatted media FIRST. Repeat – COPY
THE FILES FIRST!
Do not rename les directly on the SD card.
Do not attempt to edit the les directly on the SD card.
Do not save ANYTHING to the SD card with a computer
(such as the take log, note les etc) - it is formatted for
DPR recorder use only.

Digital Plug-On Transmitter
Rio Rancho, NM 9
Do not open the les on the SD card with any third
party program such as Wave Agent or Audacity and
permit a save.In Wave Agent, do not IMPORT - you
can OPEN and play it but do not save or Import - Wave
Agent will corrupt the le.
In short - there should be NO manipulation of the data
on the card or addition of data to the card with any-
thing other than an DPR recorder.Copy the les to a
computer, thumb drive, hard drive, etc. that has been
formatted as a regular OS device FIRST - then you can
edit freely.
iXML HEADER SUPPORT
Recordings contain industry standard iXML chunks in
the le headers, with the most commonly used elds
lled in.
Compatibility with
microSDHC memory
cards
Please note that the DPR is designed for use with
microSDHC memory cards. There are several types of
SD card standards (as of this writing) based on capac-
ity (storage in GB).
SDSC: standard capacity, up to and including 2 GB –
DO NOT USE!
SDHC: high capacity, more than 2 GB and up to and
including 32 GB – USE THIS TYPE.
SDXC: extended capacity, more than 32 GB and up to
and including 2 TB – DO NOT USE!
SDUC: extended capacity, more than 2TB and up to
and including 128 TB – DO NOT USE!
The larger XC and UC cards use a dierent format-
ting method and bus structure and are NOT compat-
ible with the recorder. These are typically used with
later generation video systems and cameras for image
applications (video and high resolution, high speed
photography).
ONLY microSDHC memory cards should be used.
They are available in capacities from 4GB to 32GB.
Look for the Speed Class 10 cards (as indicated by a
C wrapped around the number 10), or the UHS Speed
Class I cards (as indicated by the numeral 1 inside a U
symbol). Also note the microSDHC Logo.
If you are switching to a new brand or source of card,
we always suggest testing rst before using the card
on a critical application.
The following markings will appear on compatible
memory cards. One or all of the markings will appear
on the card housing and the packaging.
UHS Speed Class I
Stand-alone
Speed Class 10
UHS Speed Class
1
UHS Speed Class I
Accompanying
microSDHC logo
microSDHC Logo is a trademark of SD-3C, LLC

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
10
DPR-A Menu
Input SEL
BACK
Xmit SEL
BACK
Freq
555.300
Press SEL to
select desired
adjustment step
Use arrow keys
to select desired
frequency
Gain 22 Use arrow keys to
select input gain
Rolloff Use arrow keys
to select
Phase Use arrow keys to
select audio output
polarity
Phantom
48V Use arrow keys to
select
TxPower Use arrow keys to select
RF power output
Rf On? Use arrow keys to
select
70 Hz
Normal
Invert
25 mW
50 mW
Yes
No
SDCard SEL
BACK
Record Press to begin
recording or to stop
recording
Files
Takes
Sc&Take
SD Info
MENU
SEL
0014A000
0013A000
Use arrow keys to
select file in list
Select from
listing
Use arrow keys to select
scene & take
S05 T004
S05 T005
S05 T006
Scene 5
Take 3
Use arrow keys to
advance scene & take
Press to
select desired
adjustment
MENU
SEL
[DPR ]
Max Rec
E.........................F
0/ 14G
Storage used
Storage capacity
Available recording time (H : M : S)
Format
Naming
Use arrow keys to initiate
formatting the memory card
No
Yes
WARNING: Format will
erase memory card
Use arrow keys to select
file naming method
Seq #
Clock
LoadGrp
SaveGrp
Use arrow keys to select
No
Yes
Use arrow keys to select
No
Yes
-40 20 +0
No Grp

Digital Plug-On Transmitter
Rio Rancho, NM 11
TCode SEL
BACK
TC Jam
IR&Key
Fr.Rate
Use Clk
LOADING
TIMECODE
FROM
CLOCK
Plug in clock
source and sync
JAM NOW
Plug in time code
source and sync
Use arrow keys to select
frame rate of 30, 29.97, 25,
24, 23.976, 30DF, or 29.97DF
Press to set
function
30
MENU
SEL
SEL
BACK
Use arrow keys to select
SendFreq Press to set
function
MENU
SEL
Setup SEL
BACK
Use arrow keys to select
No
Yes
AutoOn?
Remote
BatType
Use arrow keys to select
Enable
Ignore
Use arrow keys to select
Alk.
Lith.
SEL
BACK
Clock
Locked?
Backlit
LED Off
Default
Use arrow keys to
advance time
2000
01/03
05:24
Press to set
function
MENU
SEL
Use arrow keys to select
Yes
No
Use arrow keys to select
On
30 sec
5 sec
Use arrow keys to select
On
Off
Use arrow keys to select
Default
settings
No
Yes
DPr
V 1.04/
1.01
SN 123
SEL
BACK
Use arrow keys to select
SendAll Press to set
function
MENU
SEL
SEL
BACK
Use arrow keys to select
GetFreq Press to set
function
MENU
SEL
SEL
BACK
Use arrow keys to select
GetAll Press to set
function
MENU
SEL
SEL
BACK
Use arrow keys to select from
Univrsal, Shared or Standard
KeyType
Univrsal
Press to set
function
MENU
SEL
About

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
12
Setup Screen Details
Main Window Indicators
The Main Window displays the operating frequency,
Standby or Operating mode, battery status, if an SDHC
card is presnt/recording, and audio level.
DPr
00 : 02 : 37
-20 +0
470.100
-40
Frequency (MHz) Operating mode
Battery status
Audio level
Indicates micro
SDHC card
present and
recording status
Turning Control Panel LEDs ON/OFF
From the main menu screen, a quick press of the UP
arrow button turns the control panel LEDs on. A quick
press of the DOWN arrow button turns them o. The
buttons will be disabled if the LOCKED option is se-
lected in the Setup menu.
The control panel LEDs can also be turned on and o
with the LED O option in the Setup menu.
Helpful Features on Receivers
To aid in nding clear frequencies, several Lectrosonics
receivers oer a SmartTune feature that scans the tun-
ing range of the receiver and displays a graphical report
that shows where RF signals are present at dierent
levels, and areas where there is little or no RF energy
present. The software then automatically selects the
best channel for operation.
Lectrosonics receivers equipped with an IR Sync func-
tion allow the receiver to set frequency on the transmit-
ter via an infrared link between the two units.
Input Menu
Adjusting the Input Gain
The two bicolor Modulation LEDs on the control panel
provide a visual indication of the audio signal level
entering the transmitter. The LEDs will glow either red
or green to indicate modulation levels as shown in the
following table.
Signal Level -20 LED -10 LED
Less than -20 dB O O
-20 dB to -10 dB Green O
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 dB Red Red
NOTE: Full modulation is achieved at 0 dB,
when the “-20” LED first turns red. The limiter
can cleanly handle peaks up to 30 dB above
this point.
It is best to go through the following procedure with the
transmitter in the standby mode so that no audio will
enter the sound system or recorder during adjustment.
1) With fresh batteries in the transmitter, power the
unit on in the standby mode (see previous section
Turning Power ON and OFF).
2) Navigate to the Gain setup screen.
Input...
Gain
Rolloff
Polarity -40 -20 +0
Gain
22
3) Prepare the signal source. Position a microphone
the way it will be used in actual operation and
have the user speak or sing at the loudest level
that will occur during use, or set the output level
of the instrument or audio device to the maximum
level that will be used.
4) Use the and arrow buttons to adjust the gain
until the –10 dB glows green and the –20 dB LED
starts to icker red during the loudest peaks in the
audio.
5) Once the audio gain has been set, the signal can
be sent through the sound system for overall level
adjustments, monitor settings, etc.
6) If the audio output level of the receiver is too high
or low, use only the controls on the receiver to
make adjustments. Always leave the transmitter
gain adjustment set according to these instruc-
tions, and do not change it to adjust the audio
output level of the receiver.
NOTE: Input Gain may also be accessed by
holding down MENU/SEL from the home/main
screen.

Digital Plug-On Transmitter
Rio Rancho, NM 13
Selecting the Low Frequency Roll-o
It is possible that the low frequency roll-o point could
aect the gain setting, so it’s generally good practice to
make this adjustment before adjusting the input gain.
The point at which the roll-o takes place can be set to:
• 25 Hz • 100 Hz
• 35 Hz • 120 Hz
• 50 Hz • 150 Hz
• 70 Hz
The roll-o is often adjusted by ear while monitoring the
audio.
.
Input...
Gain
Rolloff
Polarity
Rolloff
70 Hz
Selecting Audio Polarity (Phase)
Audio polarity can be inverted at the transmitter so the
audio can be mixed with other microphones without
comb ltering. The polarity can also be inverted at the
receiver outputs.
Input...
Gain
Rolloff
Polarity
Polarity
Normal
Invert
Selecting Phantom Power Supply
Input...
Rolloff
Polarity
Phantom
Phantom
15V
The transmitter input jack can provide phantom power
for the attached microphone if needed, with voltages
at 5, 15 or 48. Phantom power will consume a slight
amount of battery power, so it can also be turned o.
About the Phantom Power Supply
Three phantom voltages are selectable from the control
panel. The voltages are:
• 5 Volts for lavaliere microphones,
• 15 Volts for some professional mics requiring high
current and for many common stage mics that will
operate over a wide phantom Voltage range of 12
to 48 Volts. With the proper adapter, this position
can also be used with T power microphones. See
our web site for details on nding or making the
proper adapter.
• 48 Volts for microphones that do in fact require
a supply greater than 18 Volts. (See below for a
discussion of why 42 and not a “true” 48 Volts.)
For longest battery life use the minimum phantom volt-
age necessary for the microphone. Many stage micro-
phones regulate the 48 Volts down to 10 Volts internally
anyway, so you might as well use the 15 Volt setting and
save some battery power. If you are not using a micro-
phone for the input device, or are using a microphone
that does not require phantom power, turn the phantom
power o.
Phantom power should only be used with a fully oat-
ing, balanced device, such as common microphones
with a 3-pin XLR connector. If you use the phantom
power with an unbalanced device or if pins 2 or 3 are
DC connected to ground, then you will draw maximum
current from the power supply. The DPR is fully protect-
ed against such shorts but the batteries will be drained
at twice the normal rate.
The transmitter can supply 4 mA at 42 Volts, 8 mA at 15
Volts, and 8 mA at 5 Volts. The 42 Volts setting actually
supplies the same voltage to a 48 Volt microphone as
the DIN standard arrangement due to a dynamic biasing
scheme that does not have as much voltage drop as the
DIN standard. The 48 Volt DIN standard arrangement
protects against shorts and high fault current with high
resistance in the power supply feeds to pins 2 and 3.
This provides protection if the supply current is acciden-
tally shorted to ground and also keeps the microphone
from being attenuated by the power supply.
The DPR improves on those functions and is able to use
less power from the battery by using constant current
sources and current limiters. With this dynamic arrange-
ment, the DPR can also supply more than twice the
current of competing 48 Volt plug on units and provide
four times the current for some very high end 15 Volt
microphones.

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
14
Xmit Menu
Selecting Frequency
The setup screen for frequency selection oers two
ways to browse the available frequencies.
Xmit...
Freq.
TxPower
Rf On?
Freq.
494.500
Freq.
494.500
Press the MENU/SEL button to select each eld. Use
the and arrow buttons to adjust the frequency. Each
eld will step through the available frequencies in a dif-
ferent increment.
Setting Transmitter Output Power
The output power can be set to 25 mW or 50 mW.
Xmit...
Freq.
TxPower
Rf On?
TxPower
25 mW
50 mW
Turning Rf Output On
It’s best to set frequency and other settings in the
standby mode (Rf o) so that no audio will enter the
sound system or recorder during adjustment. Use this
menu item to turn the Rf carrier on and o.
Xmit...
Freq.
TxPower
Rf On?
Rf On?
Ye s
No
NOTE: See previous section, Turning Power ON
and OFF for instructions on turning transmitter
on with the Rf carrier disabled (Standby Mode).
SDCard Menu
Record or Stop
Begins recording or stops recording. (See Recorder
Operating Instructions.)
SDCard...
Record
Files
Ta kes
SDCard...
Stop
Files
Ta kes
Setting Scene and Take Number
Use UP and DOWN arrows to advance Scene and Take
and MENU/SEL to toggle. Press the BACK button to
return to menu.
Sc&Take
Scene 1
Ta ke 5
SDCard...
Files
Ta kes
Sc&Take
Formatting microSDHC Memory Card
Formats the microSDHC memory card.
WARNING: This function erases any content
on the microSDHC memory card.
SDCard...
Format
Naming
SD Info
Format?
(erases)
No
Ye s
Recorded File Naming
Choose to name the recorded les by the sequence
number, by the clock time or by scene and take.
Naming
Seq #
Clock
Sc&Take
SDCard...
Format
Naming
SD Info
microSDHC Memory Card Info
Information regarding the microSDHC memory card
including space remaining on card.
SDCard...
SD Info
LoadGrp
SaveGrp
[DPR ]
E...................F
0/ 14G
Max Rec
29:52:52
Fuel gauge
Storage used
Storage capacity
Available recording
time (H : M : S)
Load Tuning Group
The tuning groups feature allows groups of frequencies
to be created, stored and used to constrain tuning. The
groups are created using Lectrosonics DSQD receiver
or via Wireless Designer, then the groups are shared
with the DPR via IR sync or microSDHC Memory Card
transmission.
Use UP and DOWN arrows to toggle and MENU/SEL to
save group.

Digital Plug-On Transmitter
Rio Rancho, NM 15
SDCard...
SD Info
LoadGrp
SaveGrp
LoadGrp
No
Ye s
Save Tuning Group
Use UP and DOWN arrows to toggle and MENU/SEL to
save group.
SDCard...
SD Info
LoadGrp
SaveGrp
SaveGrp
No
Ye s
TCode Menu
TC Jam (jam timecode)
TCode...
TC Jam
Fr. Rate
Use Clk
TC Jam
JAM NOW
When TC Jam is selected, JAM NOW will blink on the
LCD and the unit is ready to be synced with the time-
code source. Connect the timecode source and the
sync will take place automatically. When the sync is
successful, a message will be displayed to conrm the
operation.
Timecode defaults to 00:00:00 at power up if no time-
code source is used to jam the unit. A timing reference
is logged into the BWF metadata.
Setting Frame Rate
TCode...
TC Jam
Fr. Rate
Use Clk
Fr. Rate
30
The frame rate aects embedding of the timing refer-
ence in the .BWF le metadata and display of timecode.
The following options are available:
• 30 • 23.976l
• 29.97 • 30DF
• 25 • 29.97DF
• 24
NOTE: While it is possible to change the frame
rate, the most common use will be to check
the frame rate which was received during the
most recent timecode jam. In rare situations, it
might be useful to alter the frame rate here, but
be aware that audio tracks many not line up
correctly with mismatched frame rates.
Use Clock
TCode...
TC Jam
Fr. Rate
Use Clk
LOADING
TIMECODE
FROM
CLOCK
Choose to use the clock provided in the DPR as op-
posed to a timecode source. Set the clock in the Set-
tings Menu, Date & Time.
NOTE: The DPR time clock and calendar
(RTCC) cannot be relied on as an accurate time
code source. Use Clock should only be used in
projects where there is no need for the time to
agree with an external time code source.
Key Menu
KeyType
The DPR receives an encryption key via the IR port
from a key generating receiver (such as the Lectroson-
ics DCHR and DSQD receivers). Begin by selecting a
key type in the receiver and generating a new key. Set
the matching KEY TYPE in the DPR and transfer the
key from the receiver (SYNC KEY) to the DPR via the
IR ports. A conrmation message will display on the
receiver display if the transfer is successful. The trans-
mitted audio will then be encrypted and can only be de-
coded if the receiver has the matching encryption key.
The DPR has three options for encryption keys:
• Universal: This is the most convenient en-
cryption option available. All encryption-capable
Lectrosonics transmitters and receivers contain
the Universal Key. The key does not have to be
generated by a receiver. Simply set the DPR and a
Lecrosonics receiver to Universal, and the encryp-
tion is in place. This allows for convenient encryp-
tion amongst multiple transmitters and receivers,
but not as secure as creating a unique key.
• Shared: There are an unlimited number of
shared keys available. Once generated by a re-
ceiver and transferred to the DPR, the encryption
key is available to be shared (synced) by the DPR
with other transmitters/receivers via the IR port.
When a transmitter is set to this key type, a menu
item named SEND KEY is available to transfer the
key to another device.
• Standard: This is the highest level of secu-
rity. The encryption keys are unique to the re-
ceiver and there are only 256 keys available to be

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
16
transferred to a transmitter. The receiver tracks
the number of keys generated and the number of
times each key is transferred.
Key...
KeyType
KeyType
Univrsale
WipeKey
This menu item is only available if Key Type is set to
Standard or Shared. Select Yes to wipe the current key
and enable the DPR to receive a new key.
Key...
KeyType
WipeKey
WipeKey?
No
Ye s
SendKey
This menu item is only available if Key Type is set to
Shared. Press MENU/SEL to sync the Encryption key to
another transmitter or receiver via the IR port.
Key...
KeyType
WipeKey
SendKey
SendKey
Share
Setup Menu
Setting Auto On
Setup...
AutoOn?
Remote
BatType
AutoOn?
No
Ye s
Selects whether or not the unit will turn on automatically
after a battery change.
Enabling Remote Function
Setup...
AutoOn?
Remote
BatType
Remote
Enable
Ignore
The DPR can be congured to respond to “dweedle
tone” signals from the LectroRM smart phone app or to
ignore them. Use the arrow buttons to toggle between
“yes” (remote control on) and “no” (remote control o).
(See section on LectroRM.)
Setting Battery Type
Setup...
AutoOn?
Remote
BatType
BatType
Alk.
Lith.
Choose either Alkaline (recommended) or Lithium AA
battery type. The voltage of the installed battery pair will
be shown at the bottom of the display.
Setting Battery Timer
A built-in timer can be used with any battery type, but it
is especially valuable with rechargeable batteries such
as NiMH types. The voltage remains fairly constant
across the discharge time of a rechargeable battery,
then drops quickly near the end of the operating time.
The most accurate way to determine runtime status
is by testing the time provided by a particular bat-
tery brand and type, then using the timer to determine
remaining runtime. Rechargeable batteries lose capacity
over their life, so it is good to run the battery down and
note the runtime on older or unfamiliar batteries.
Setup...
BatTime
Clock
Locked?
Bat 5:24
Reset?
No
Ye s
Setting Date and Time (Clock)
To set the date and time, use the MENU/SEL button to
toggle through the elds and the UP and DOWN arrow
buttons to choose the appropriate number.
Setup...
BatTime
Clock
Locked?
Clock
2000
01/06
22:53

Digital Plug-On Transmitter
Rio Rancho, NM 17
Locking/Unlocking Settings
Changes to the settings can be locked to prevent inad-
vertent changes being made.
Locked?
Ye s
No
Freq.
494.500
A small padlock symbol will appear on adjustment
screens when changes have been locked.
Setup...
BatTime
Clock
Locked?
When changes are locked, several controls and actions
can still be used:
• Settings can still be unlocked
• Menus can still be browsed
Backlit Settings
Sets the duration of the LCD backlight.
Setup...
Backlit
LED Off
Default
Backlit
On
30 sec
5 sec
Turn LEDs On/O
Enables/disables control panel LEDs.
Setup...
Backlit
LED Off
Default
LEDs
On
Off
NOTE: LEDs can also be turned off/on from the
control panel. From the main screen, a quick
press of the UP arrow button turns the control
panel LEDs on. A quick press of the DOWN
arrow button turns them off.
Restoring Default Settings
This is used to restore the factory settings.
Setup...
Backlit
LED Off
Default
Default
settings
No
Ye s
About
Displays the DPR model number, rmware versions
and serial number.
DPr
V 1.04/
1.01
SN 123

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
18
LectroRM
By New Endian LLC
LectroRM is a mobile application for iOS and Android
operating systems. Its purpose is to remotely control
Lectrosonics Transmitters, including:
• SM Series
• WM
• L Series
• DPR
The app remotely changes settings on the transmit-
ter through the use of encoded audio tones, which
when received by the attached microphone, will alter
the congured setting. The app was released by New
Endian, LLC in September 2011. The app is available for
download and sells for $25 on the Apple App Store and
Google Play Store.
LectroRM’s remote control mechanism is the use of an
audio sequence of tones (dweedles) that are interpreted
by the transmitter as a conguration change. The set-
tings available in LectroRM are:
• Audio Level
• Frequency
• Sleep Mode
• Lock Mode
User Interface
The user interface involves selecting the audio se-
quence related to the desired change. Each version has
an interface for selecting the desired setting and the
desired option for that setting. Each version also has a
mechanism to prevent accidental activation of the tone.
iOS
The iPhone version keeps each available setting on a
separate page with the list of options for that setting.
On iOS, the “Activate” toggle switch must be enabled to
show the button which will then activate the audio. The
iOS version’s default orientation is upside-down but can
be congured to orient right-side up. The purpose for
this is to orient the device’s speaker, which is at the bot-
tom of the device, closer to the transmitter microphone.
Android
The Android version keeps all settings on the same
page and allows the user to toggle between the activa-
tion buttons for each setting. The activation button must
be long pressed to activate. The Android version also
allows users to keep a congurable list of full sets of
settings.
Activation
For a transmitter to respond to remote control audio
tones, the transmitter must meet certain requirements:
• The transmitter must not be turned o; it can
however be in sleep mode.
• The transmitter microphone must be
within range.
• The transmitter must be congured to enable
remote control activation.
Please be aware this app is not a
Lectrosonics product. It is privately owned
and operated by New Endian LLC,
www.newendian.com.

Digital Plug-On Transmitter
Rio Rancho, NM 19
5510 Flash Memory Card
Flash Memory Card. MicroSDHC toSD
Adapter included. Brand and capacity may
vary.
AMM(xx)
Whip antenna; straight. Specify frequency block (see
chart below).
About Whip Antenna Frequencies:
Frequencies for whip antennas are specied by the
block number. For example, AMM-25 is the straight
whip model cut to the block 25 frequency.
L-Series transmitters and receivers tune across a range
covering three blocks. The correct antenna for each of
these tuning ranges is the block in the middle of the tun-
ing range.
Band Blocks Covered Ant. Freq.
A1 470, 19, 20 Block 19
B1 21, 22, 23 Block 22
C1 24, 25, 26 Block 25
PHTRAN3-A
Replacement leather pouch with clear plastic screen
cover, rotating belt clip and snap closure. Included with
unit at purchase.
40096
(2) Alkaline batteries. Brand may vary.
Supplied Accessories Optional Accessories
21750 Barrel Adapter
This polarity reversing adapter may be
needed to correct for asymmetrical
current draw in some P48 powered
condenser microphones, including
older Neumann 100 Series, Rode NTG3
and others. If your microphone does not power on
correctly when used with these transmitters, insert the
adapter between the transmitter and microphone.
MCA-M30 Barrel Adapter
Mic adapter for Earthworks M30 micro-
phone with HM, DPR and UH400a/TM
transmitters.
This adapter may be needed if you are
experiencing noise or distortion with
measurement microphones, particularly the Earthworks
M30. The adapter has a common mode choke for
suppressing RF noise. If your microphone signal exhibits
the problems listed above when connected to a UH400,
HM or DPR transmitter, insert the adapter between the
microphone and the transmitter. Insert the adapter
between the transmitter and microphone to alleviate
these issues.
MCA5X
This is an optional adapter for connecting a lavaliere
microphone to the DPR or HM transmitters. TA5M to
XLR3-M connectors. Passes transmitter phantom power
to bias the electret lavaliere microphone. Includes zener
protection to limit bias voltage to protect the microphone
if transmitter phantom power is set too high.
MCA-TPOWER
This cable adapter is to be used with the
UH200D, UH400, HM and DPR plug-on
transmitters with T-powered microphones.
It will protect a T-power mic against the
48V phantom power setting in the transmitter while
allowing normal operation. The transmitter should be
set to the 15V position for best operation and minimum
battery drain.
DPRACVR/DPRACVR-BLK
Protective silicone covers for DPR-A.
Available in either white or black.

DPR-A, DPR-A/E01, DPR-A/E01-B1C1
LECTROSONICS, INC.
20
Specications
For body worn operation, this transmitter model has
been tested and meets the FCC RF exposure guidelines
when used with the Lectrosonics accessories supplied or
designated for this product. Use of other accessories may
not ensure compliance with FCC RF exposure guidelines.
Contact Lectrosonics if you have any questions or need
more information about RF exposure using this product..
This device complies with FCC radiation exposure limits
as set forth for an uncontrolled environment. This device
should be installed and operated so that its antenna(s) are
not co-located or operating in conjunction with any other
antenna or transmitter.
Transmitter
Operating Frequencies: DPR-A: 470.100 - 607.950 MHz
DPR-A/E01: 470.100 - 614.375 MHz
DPR-A/E01-B1C1: 537.600 - 691.175
Frequency Selection Steps: 25 kHz
RF Power output: Selectable 25/50 mW
Frequency stability: ± 0.002%
Digital modulation: 8PSK
Spurious radiation: Compliant with
ETSI EN 300 422-1 v1.4.2
Equivalent input noise: –125 dBV
(A-weighted)
Input level: Nominal 2 mV to 300 mV,
before limiting
Greater than 1V maximum, with limiting
Input impedance: 1K Ohm
Input limiter: Dual envelope type; 30 dB range
Gain control range: 55 dB in 1 dB steps; digital control
Modulation indicators: • Dual bi-color LEDs indicate
modulation of -20, -10, 0, +10 dB
referenced to full modulation
• LCD bar graph
Encryption: AES 256-CTR
(per FIPS 197 and FIPS 140-2)
Audio Performance:
Frequency Response: 25 Hz to 20 kHz, (+0, -3dB)
Low frequency Roll-off: Adjustable for -3dB @ 25, 35, 50, 70,
100, 120 and 150 Hz
Input Dynamic Range: 110 dB (A), before limiting
125 dB (with full Tx limiting)
Controls & Indicators: • LCD w/membrane switches
• LED audio level indicators
Audio Input Jack: Standard 3-pin XLR (female)
Phantom Power: 5V @ 18 mA max., 15V @ 15 mA max.
and 48 V @ 4 mA max., plus “OFF”
IR (infrared) port: For quick setup by transferring settings
from an IR enabled receiver
Antenna: External SMA antenna jack
Battery: Two 1.5 Volt AA (lithium recommended)
Battery Life: AA Lithium, 48v phantom power
engaged:
• SCHOEPS CMIT 5U: 7h 25m
• SCHOEPS CMC6-U/MK41: 7h 20m
• SANKEN CS-1: 8h 0m
Weight: 7.8 ozs. (221 grams)
Dimensions: 4.21” L [excluding antenna: DPR-A] x
1.62” W x 1.38” H
(106.9 L x 41.1W x 35.0 H mm)
Emission Designator: 170KG1E
Recorder
Storage media: microSDHC memory card (HC Type)
File format: .wav files (BWF)
A/D converter: 24-bit
Sampling rate: 48 kHz
Recording modes/Bit rate: HD mono: 24 bit - 144 kb/s
Input:
Type: Analog mic/line level compatible; servo
bias
preamp for 2V and 4V lavaliere
microphones
Input level: • Dynamic mic: 0.5 mV to 50 mV
• Electret mic: Nominal 2 mV to 300 mV
• Line level: 17 mV to 1.7 V
Input connector: TA5M 5-pin male
Timecode:
Connector: 3.5 mm TRS
Signal voltage: 0.5 Vp-p to 5 Vp-p
Input impedance: 10 k Ohms
Format: SMPTE 12M - 1999 compliant
Audio Performance:
Frequency response: 25 Hz to 20 kHz; +0.5/-1.5 dB
Dynamic range: 110 dB (A), before limiting
125 dB (with full Tx limiting)
Distortion: < 0.035%
Operating temperature range:
Celsius: -20 to 50
Fahrenheit: -5 to 122
Specications subject to change without notice