LECTROSONICS DPR-A, DPR-A/E01 Instruction Manual
DPR-A
Digital Plug-On Transmitter
DPR-A, DPR-A/E01
INSTRUCTION MANUAL
Fill in for your records:
Serial Number:
Purchase Date:
WARNING: Moisture, including talent’s sweat,
will damage the transmitter. Wrap the DPR-A
in a plastic baggie or other protection to
avoid damage.
Rio Rancho, NM, USA
www.lectrosonics.com
DPR-A
2
LECTROSONICS, INC.
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
Digital Plug-On Transmitter
SDCard Menu ....................................................................... 14
Record or Stop .................................................................. 14
Choosing Files for Replay .................................................. 14
Choosing Takes for Replay ................................................14
Setting Scene and Take Number ....................................... 14
Formatting microSDHC Memory Card ............................... 14
Recorded File Naming ...................................................... 14
microSDHC Memory Card Info .......................................... 15
Load Frequency Group ...................................................... 15
Save Frequency 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
Accessories ......................................................................... 19
21750 Barrel Adapter ......................................................... 19
MCA-M30 Barrel Adapter ................................................... 19
PHTRAN3 .......................................................................... 19
MCA5X ............................................................................... 19
MCA-TPOWER .................................................................. 19
Specifications and Features ............................................... 20
Transmitter .........................................................................20
Firmware Update ................................................................. 21
Recovery Process ...............................................................22
Service and Repair .............................................................. 23
Returning Units for Repair ................................................. 23
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
Rio Rancho, NM
3
DPR-A
General Technical
Description
The Lectrosonics DPR-A digital plug-On transmitter
benefits from a fourth generation design with specially
developed, high efficiency digital circuitry for extended
operating time on two AA batteries. The unique design
provides several distinct features for professional applications:
• 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 frequency 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 finish resists salt water 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
amplifier for quiet operation.
The DPR-A has an external SMA antenna jack, which
accepts Lectrosonics steel flex wire AMM or AMJ
series antennas.
Low Frequency Roll-Off
The low frequency roll-off 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-off frequency will vary slightly
depending upon the low frequency response of the
microphone.
Excessive low frequency content can drive the transmitter into limiting, or in the case of high level sound
systems, even cause damage to loudspeaker systems.
The roll-off is normally adjusted by ear while listening
as the system is operating.
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 distortion. 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 effects, and also
recovers slowly from sustained high levels, to keep
audio distortion 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. Multicolor 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 transmit 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 offers easy
firmware 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 sporting events, in court rooms or private meetings. For
instances where your audio transmission needs to be
kept secure, without sacrificing audio quality, Lectrosonics implements AES256 encryption in our digital
wireless microphone systems. High entropy encryption keys are first 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.
4
LECTROSONICS, INC.
Digital Plug-On Transmitter
Features
Modulation
Input
Coupler
XLR Input Jack
LEDs
MENU/SEL Button
LCD
UP Arrow
BACK Button
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 configure the transmitter. The
transmitter can be turned on in a “standby” mode with
the carrier turned off 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 off 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
off 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 first turns red.
Signal Level -20 LED -10 LED
Less than -20 dB Off Off
-20 dB to -10 dB Green Off
-10 dB to +0 dB Green Green
+0 dB to +10 dB Red Green
Greater than +10 dB Red Red
PWR LED
POWER Button
KEY LED
DOWN
Arrow
MENU/SEL Button
The MENU/SEL button is used to display the transmitter 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 previous 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 off.
Menu Shortcuts
From the main/home screen, the following menu shortcuts are available:
Simultaneous press of BACK button + UP arrow but-
ton: 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 off
Audio Input Jack
The 3 pin female XLR to AES standard balanced input
jack on the transmitter accommodates hand-held,
shotgun 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 flex 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.
Battery Compartment
Rio Rancho, NM
IR Port
5
DPR-A
TO AT TACH
Battery Installation
The battery compartment door is made of machined
aluminum 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 battery goes in positive (+) end first, the other negative
(- ) end first. 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.
Attaching/Removing a
Microphone
The spring loaded coupler under the XLR jack maintains a secure fit to the microphone jack with continuous 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
locking collar.
TO REMOVE
Hold the
transmitter
case with the
Press firmly, listen for click.
Depress collar fully.
Click!
Pull on mic to ensure it is locked.
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.
microphone
pointed
upward.
Rotate the
collar in the
direction
shown.
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.
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LECTROSONICS, INC.
Digital Plug-On Transmitter
Operating Instructions
Modulation
LEDs
MENU/SEL Button
BACK Button
PWR LEDUP Arrow
POWER Button
KEY LED
DOWN
Turning Power ON
Powering On in Operating Mode
Press and hold the POWER Button briefly until the
progress bar on the LCD finishes.
When you release the button, the unit will be operational with the RF output turned on and the Main Window
displayed.
RF indicator not blinking
Hold
for
Rf On
Hold power
button until
the progress
bar finishes
Powering On in Standby Mode
RF indicator blinks
470.100
DPr
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wireless systems nearby.
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A brief press of the POWER
button and releasing it before the
progress bar finishes, will turn the
unit on with the RF output turned
off. In this Standby Mode the
menus can be browsed to make
settings and adjustments without
the risk of interfering with other
470.100
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Arrow
Transmitter Operating
Instructions
• Install battery(s)
• Turn power on in the Standby mode (see previous
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
Gain
Rolloff
Polarity
Signal Level -20 LED -10 LED
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 dB
• Set the frequency to match the receiver.
• Set encryption key type and sync with receiver.
• Turn the power off and then back on while holding
the POWER button in and waiting until the progress bar finishes.
-40
-20
Use the UP and DOWN
arrow buttons to adjust
22
the gain until the -20
LED blinks red on
louder peaks
+0
Off Off
Green Off
Green Green
Red Green
Red Red
Powering Off
Powering
O...
ously.
Rio Rancho, NM
To turn the unit off, hold the POW-
ER Button in briefly and wait for the
progress bar to finish. If the
POWER button is released before
the progress bar finishes, the unit
will remain turned on and the LCD
will return to the same screen or
menu that was displayed previ
7
DPR-A
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
Gain
Rolloff
Polarity
Signal Level -20 LED -10 LED
Less than -20 dB
-20 dB to -10 dB
-10 dB to +0 dB
+0 dB to +10 dB
Greater than +10 dB
• Press MENU/SEL, choose SDCard and Record
from the menu
-40
-20
SDCard...
Record
Files
Ta kes
Use the UP and DOWN
arrow buttons to adjust
22
the gain until the -20
LED blinks red on
louder peaks
+0
Off Off
Green Off
Green Green
Red Green
Red Red
542.000
REC
-20
-40
TC Jam
port
microSDHC
memory card
port
Formatting SD Card
New microSDHC memory cards come pre-formatted
with a FAT32 file 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 files 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 (complete 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).
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• To stop recording, press MENU/SEL, choose
SDCard and Stop; the word SAVED appears on
the screen
SDCard...
470.100
Stop
Files
Ta kes
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
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LECTROSONICS, INC.
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