Lectrosonics DBSM User manual

DBSM/DBSMD
Digital Transcorder
DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
INSTRUCTION MANUAL
Rio Rancho, NM, USA
www.lectrosonics.com
Fill in for your records:
Serial Number:
Purchase Date:
DBSM DBSMD

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
2
Introduction
The DBSM/DBSMD transmitter employs high efficiency
digital circuitry for extended operating time on two AA
batteries. The transmitter can tune in steps across the
UHF television band from 470.100 to 607.950 MHz
(DBSM/DBSMD/E01 frequency range is 470.100 to
614.375 MHz), with a selectable output power of 10,
25 or 50 mW. A high-density transmission mode at 2
mW allows close carrier spacing for maximum channels
within a given amount of spectrum.
The pure digital architecture enables AES 256CTR
encryption for high level security applications. Studio
quality audio performance is assured by high quality
components in the preamp, wide range input gain ad-
justment and DSP-controlled limiting. Input connections
and settings are included for any lavaliere microphone,
dynamic microphones and line level inputs. Input gain
is adjustable over a 44 dB range in 1 dB steps to allow
an exact match to the input signal level, to maximize the
dynamic range and signal to noise ratio.
The housing is a rugged, machined aluminum pack-
age with a standard Lectrosonics 5-pin input jack for
use with electret lavaliere mics, dynamic mics, musical
instrument pickups and line level signals. The LEDs
on the keypad allow quick and accurate level settings
without having to view the receiver. The unit is powered
by AA batteries, and the antenna port uses a standard
50 ohm SMA connector.
Switching power supplies provide constant voltages to
the transmitter circuits from the beginning to the end of
battery life, with output power remaining constant over
the life of the battery.
Table of Contents
Introduction............................................................................ 2
Servo Bias Input and Wiring ................................................ 3
DSP-controlled Input Limiter................................................ 3
Recorder function................................................................. 3
Encryption............................................................................ 3
Compatibility withmicroSDHC memory cards .................... 3
Features.................................................................................. 4
Main Window Indicator......................................................... 4
Battery Status LED Indicator ............................................... 4
Encryption StatusLED Indicator........................................... 4
Battery Installation ................................................................ 5
Connecting the Signal Source ............................................. 5
Formatting SD Card............................................................... 5
IMPORTANT .......................................................................... 5
iXML HEADER SUPPORT .................................................. 5
Turning Power ON ................................................................. 6
Short Button Press............................................................... 6
Long Button Press ............................................................... 6
Menu Shortcuts.................................................................... 6
Powering Off ........................................................................ 6
Recorder Operating Instructions ......................................... 6
Setting Gain ......................................................................... 6
Recording............................................................................. 6
DBSM/DBSMD Menu Map ..................................................... 8
Menu Screen Details ............................................................ 9
Top Menu ............................................................................. 9
Input Menu........................................................................... 10
Adjusting the Input Gain....................................................... 10
Selecting the Low Frequency Roll-off .................................. 10
Selecting Audio Polarity ....................................................... 10
Selecting LineIn/Instrument ................................................. 10
Xmit Menu .............................................................................. 11
Selecting Frequency ........................................................... 11
Setting Transmit Output Power............................................. 11
RfOn?................................................................................... 11
Compat (Compatibility) Menu............................................... 11
High Density Mode............................................................... 11
SD Card Menu ........................................................................ 11
Recording............................................................................. 12
Files ..................................................................................... 12
Takes.................................................................................... 12
Setting Scene and Take Number ......................................... 12
Format.................................................................................. 12
Recorded File Naming ......................................................... 12
SD Info ................................................................................. 12
Load Group.......................................................................... 12
Save Group.......................................................................... 13
TCode (Timecode) Menu....................................................... 13
TC Jam (jam timecode)........................................................ 13
Setting Frame Rate.............................................................. 13
Use Clock............................................................................. 13
IR&Key Menu.......................................................................... 13
SendAll................................................................................. 13
GetFreq................................................................................ 13
GetAll ................................................................................... 14
Key Type............................................................................... 14
Wipe Key.............................................................................. 14
SetUp Menu............................................................................ 13
AutoOn................................................................................. 13
Remote ................................................................................ 13
BattType ............................................................................... 14
Clock .................................................................................... 14
Locking/Unlocking Changes to Settings............................... 15
DispOff................................................................................. 15
LED Off ................................................................................ 15
Default.................................................................................. 15
About.................................................................................... 15
5-Pin Input Jack Wiring ......................................................... 16
Microphone Cable Termination
for Non-Lectrosonics Microphones.............................. 17
Input Jack Wiring for Different Sources .............................. 18
Microphone RF Bypassing................................................... 19
Line Level Signals................................................................ 19
Firmware Update ................................................................... 20
Recovery Process ................................................................. 21
Silver Paste on SM Series Transmitter Thumbscrews........ 22
Straight Whip Antennas ........................................................ 23
Belt Clips and Pouches......................................................... 24
DBSM Single Battery Model ................................................ 24
DBSMD Dual Battery Model ................................................ 24
Miscellaneous Accessories.................................................. 25
LectroRM and PDR Remote.................................................. 26
Specifications ........................................................................ 28
Troubleshooting..................................................................... 29
Service and Repair ................................................................ 30
Returning Units for Repair ................................................... 30
ISDEC Notice.......................................................................... 31
Warranty ................................................................................. 32

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 3
Servo Bias Input and Wiring
The input preamp is a unique design that delivers
audible improvements over conventional transmitter
inputs. Two different microphone wiring schemes are
available to simplify and standardize the configuration.
Simplified 2-wire and 3-wire configurations provide sev-
eral arrangements designed for use only with servo bias
inputs to take full advantage of the preamp circuitry.
A line level input wiring provides an extended frequency
response with an LF roll-off at 20 Hz for use with instru-
ments and line level signal sources.
DSP-controlled Input Limiter
The transmitter employs a digitally-controlled analog
audio limiter prior to the analog-to-digital converter.
The limiter has a range greater 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,
connected as a fast attack and release limiter followed
by a slow attack and release limiter. The limiter recovers
quickly from brief transients, so that its action is hidden
from the listener, but recovers slowly from sustained
high levels to keep audio distortion low and preserve
short term dynamic changes in the audio.
Recorder function
The DBSM/DBSMD 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 sport-
ing events, in court rooms or private meetings. For
instances where your audio transmission needs to be
kept secure, without sacrificing audio quality, Lectroson-
ics implements AES256 encryption in our digital wire-
less 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 DBSM
via the IR port. The transmission will be encrypted
and can only be decoded if the receiver and transmit-
ter 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.
Compatibility with
microSDHC memory cards
Please note that the DBSM/DBSMD are designed
for use with microSDHC memory cards. There are
several types of SD card standards (as of this writing)
based on capacity (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 different formatting
method and bus structure and are NOT compatible with
the recorder. These are typically used with later genera-
tion 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 sym-
bol). Also note the microSDHC Logo.
If you are switching to a new brand or source of card,
we always suggest testing first 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.
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

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
4
Features
Main Window Indicators
The Main Window displays the block number, Standby
or Operating mode, operating frequency, audio level,
battery status and programmable switch function. When
the frequency step size is set at 100 kHz, the LCD will
look like the following.
474.500
-40 -20 0


Frequency (MHz)
Operating mode
Battery status
Audio level
Battery Status LED Indicator
AA batteries can be used to power the transmitter.
The LED labeled BATT on the keypad glows green
when the batteries are good. The color changes to red
when the battery voltage drops down and stays red
through most of the battery life. When the LED begins
to blink red, there will be only a few minutes remaining.
The exact point at which the LEDs turn red will vary
with battery brand and condition, temperature and
power consumption. The LEDs are intended to simply
catch your attention, not to be an exact indicator of
remaining time.
A weak battery will sometimes cause the LED to glow
green immediately after the transmitter is turned on, but
it will soon discharge to the point where the LED will
turn red or the unit will turn off completely.
Some batteries give little or no warning when they
are depleted. If you wish to use these batteries in the
transmitter, you will need to manually keep track of the
operating time to prevent interruptions caused by dead
batteries.
Start with a fully charged battery, then measure the time
it takes for the Power LED to go out completely.
NOTE: The battery timer feature in many
Lectrosonics receivers is very helpful in measuring
battery runtime. Refer to the receiver instructions
for details on using the timer.
Encryption Status LED Indicator Modes
• StandBy: Light is OFF and Operating Mode Indica-
tor icon has a line through it
• Missing/Wrong Key: Light is FLASHING
• Transmitting: Light is steadily ON
microSDHC
memory card
port
microSDHC
memory card
port
Audio
Input
Jack
Antenna
Port
IR (Infrared) Port
Antenna
Port
Audio
Input
Jack
IR (Infrared) Port
Modulation
Indicators
Battery
Status LED
Encryption
Status LED

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 5
IR (infrared) Sync
The IR port is for quick setup using a receiver with this
function available. IR Sync will transfer the settings for
frequency, step size and compatibility mode from the
receiver to the transmitter. This process is initiated by
the receiver. When the sync function is chosen on the
receiver, hold the IR port of the transmitter near the IR
port of the receiver. (There is no menu item available on
the transmitter to initiate the sync.)
NOTE: If a mismatch exists between the receiver and
transmitter, an error message will appear on the transmitter LCD
stating what the problem is.
Battery Installation
The transmitter is powered by AA batteries. We recom-
mend using lithium for longest life.
Because some batteries run down quite abruptly, us-
ing the Power LED to verify battery status will not be
reliable. However, it is possible to track battery status
using the battery timer function available in Lectroson-
ics receivers.
The battery door opens by simply unscrewing the
knurled knob part way until the door will rotate. The
door is also easily removed by unscrewing the knob
completely, which is helpful when cleaning the battery
contacts. The battery contacts can be cleaned with
alcohol and a cotton swab, or a clean pencil eraser. Be
sure not to leave any remnants of the cotton swab or
eraser crumbs inside the compartment.
A small pinpoint dab of silver conductive grease on the
thumbscrew threads can improve battery performance
and operation. See page 22. Do this if you experience a
drop in battery life or an increase in operating tempera-
ture.
If you are unable to locate a supplier of this type of
grease - a local electronics shop for example - contact
your dealer or the factory for a small maintenance vial.
Insert the batteries according to the markings on the
back of the housing. If the batteries are inserted incor-
rectly, the door may close but the unit will not operate.
Connecting the Signal
Source
Microphones, line level audio sources, and instruments
can be used with the transmitter. Refer to the section
entitled Input Jack Wiring for Different Sources for
details on the correct wiring for line level sources and
microphones to take full advantage of the Servo Bias
circuitry.
Formatting SD Card
New microSDHC memory cards come pre-formatted
with a FAT32 file system which is optimized for good
performance. The unit relies on this performance and
will never disturb the underlying low level formatting of
the SD card. When the DBSM/DBSMD “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 DBSM/DBSMD to prepare it again for record-
ing. The DBSM/DBSMD never low level formats a
card and we strongly advise against doing so with the
computer.
To format the card with the DBSM/DBSMD, select
Format Card in the menu and press MENU/SEL on the
keypad.
WARNING: Do not perform a low level format (com-
plete format) with a computer. Doing so may render the
memory card unusable with the DBSM/DBSMD record-
er. 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 sec-
tors for maximum efficiency in the recording process.
The file format utilizes the BEXT (Broadcast Extension)
wave format which has sufficient data space in the
header for the file information and the time code imprint.
The SD card, as formatted by the DBSM/DBSMD re-
corder, can be corrupted by any attempt to directly edit,
change, format or view the files on a computer.
The simplest way to prevent data corruption is to copy
the .wav files from the card to a computer or other Win-
dows or OS formatted media FIRST. Repeat – COPY
THE FILES FIRST!
Do not rename files directly on the SD card.
Do not attempt to edit the files directly on the SD card.
Do not save ANYTHING to the SD card with a comput-
er (such as the take log, note files etc) - it is formatted
for DBSM recorder use only.
Do not open the files 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 file.
In short - there should be NO manipulation of the data
on the card or addition of data to the card with anything
other than an DBSM/DBSMD recorder. Copy the files 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 file headers, with the most commonly used fields
filled in.

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
6
Turning Transmitter
Power ON
Short Button Press
When the unit is turned off, a short press of the power
button will turn the unit on in the Standby Mode with
the RF output turned off. This is useful for adjusting set-
tings on the unit without transmitting.
494.500
-40 -20 0
RF indicator blinks
Long Button Press
When the unit is turned off, a long press of the power
button will start a countdown to turn the unit on with the
RF output turned on. Continue to hold the button until
the countdown is complete.
Hold
For RF
503.800
-40 -20 0
RF indicator not blinking
Hold power
button until
the counter
reaches 3
If the button is released before the countdown is com-
pleted, the unit will power up with the RF output turned
off.
Menu Shortcuts
From the Main/Home Screen, the following shortcuts
are available:
• LEDs On: Press the UP arrow
• LEDs Off: Press the DOWN arrow
• Gain Setting: Long press the MENU button and
hold while adjusting gain up or down using the ar-
row keys
• Record: Press the BACK + UP arrow simultane-
ously
• Stop Recording: Press the BACK + DOWN arrow
simultaneously
NOTE: The recording shortcuts are only available
from the main/home screen AND when a
microSDHC memory card is installed.
Powering Off
Powering
O . . .
From any screen, power can be
turned off by selecting Pwr Off in the
power menu, holding the Power
Button in and waiting for the
moving bar to progress, or with the
programmable switch (if it is config-
ured for this function).
If the power button is released, or the top panel switch
is turned back on again before the moving bar pro-
gresses, the unit will remain turned on and the LCD will
return to the same screen or menu that was displayed
previously.
NOTE: If the programmable switch is in the OFF
position, power can still be turned on with the
power button. If the programmable switch is then
turned on, a brief message will appear on the LCD.
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 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
• Press MENU/SEL, choose SDCard and Record
from the menu

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 7
-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-20 +0
-40
542.000
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

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
8
DBSM/DBSMD Menu Map
From the Main Window,
press MENU/SEL.
Use the UP/DOWN arrow
keys to select the item.

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 9

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
10
Menu Screen Details
Top Menu
From the Default screen, pressing MENU/SEL will ac-
cess the Top Menu. The Top Menu allows the user to
access the various sub-menus to control the unit.
TopMenu
Input
Xmit
Compat
TopMenu
TCode
IR&Key
Setup
Input Menu
From the TopMenu, use the and arrow buttons to
highlight INPUT and press MENU/SEL.
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 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
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 en-
ter 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 Turn-
ing Power ON and OFF).
2) Navigate to the Gain setup screen.
-40 -20 0
Gain
25
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 in-
strument 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 flicker 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 ad-
justment set according to these instructions, and do
not change it to adjust the audio output level of the
receiver.
Selecting the Low Frequency Roll-off
It is possible that the low frequency roll-off point could
affect the gain setting, so it’s generally good practice to
make this adjustment before adjusting the input gain.
The point at which the roll-off takes place can be set to:
• LF 20 20 Hz • LF 100 100 Hz
• LF 35 35 Hz • LF 120 120 Hz
• LF 50 50 Hz • LF 150 150 Hz
• LF 70 70 Hz
The roll-off is often adjusted by ear while monitoring the
audio.
.
Input...
Gain
Rolloff
Polarity
Rolloff
70 Hz


Input...
Gain
Rolloff
Polarity

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 11
Selecting Audio Polarity
Audio polarity can be inverted at the transmitter so the
audio can be mixed with other microphones without
comb filtering. The polarity can also be inverted at the
receiver outputs.
Input...
Rolloff
Polarity
LineIn
Polarity
Normal
Invert
Selecting LineIn/Instrument
Audio input can be selected as either LineIn or Instru-
ment Level.
Input...
Rolloff
Polarity
LineIn
LineIn
Line
Instr.
Xmit Menu
Use the and arrow buttons to select the Transmit
Menu from the TopMenu.
Selecting Frequency
The setup screen for frequency selection offers several
ways to browse the available frequencies.
Freq.
494.500
No Grp


Xmit...
Freq
TxPower
Rf On?
Press MENU/
SEL to select
one of three
fields to make
adjustments
Pressing MENU/SEL will change frequency fields. The
MHz frequency will change in 1 MHz steps, the KHz
frequency will change in 25 KHz steps.
Setting Transmitter Output Power
The output power can be set to:
• 10, 25 or 50 mW, or HDM (High Density Mode)
Compat
StepSiz
Phase
TxPower
TxPower
50 mW
RF On?
RF transmission can be turned on or off using the
and arrow buttons.
Xmit...
Rolloff
Polarity
Rf On?
Rf On?
Ye s
No
Compat Menu
Selecting the Compatibility Mode
TopMenu
Input
Xmit
Compat
Compat
o D2
o HDM
Use the and arrow buttons to select the desired
mode, then press the BACK button twice to return to the
Main Window.
Compatibility modes are as follows:
DBSM/DBSMD:
• Standard Mono Digital D2
• High Density Mode HDM
HDM Mode (High Density Transmission)
This special transmitting mode and associated low RF
power of 2mW allows the user to “stack” many units into
a very small area of the spectrum. Standard, ETSI-com-
pliant RF carriers take up about 200 kHz of occupied
bandwidth, while HDM takes up about half of that, or
100 kHz, and allows for much tighter channel spacing.

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
12
SD Card Menu
The SD Card Menu can be accessed from the Top-
Menu. It contains the various recording functions, file
management and naming.
Record
Selecting this will start the unit recording. To stop re-
cording, press MENU/SEL, choose SDCard and Stop;
the word SAVED appears on the screen.
-20 +0 -40
REC
542.000
SDCard...
Record
Files
Ta kes
RECORD-
ING
SAVED
SDCard...
Stop
Files
Ta kes-20 +0
-40
542.000
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
Files
This screen shows the existing files on the SD card.
Selecting a file will display details about the file.
Files
0007A000
0002A000
0003A000
0004A000
0005A000
0006A000
SDCard...
Files
Ta kes
Sc&Take
Takes - Choosing Takes for Replay
Use UP and DOWN arrows to toggle and MENU/SEL to
play back.
TxPower
Sc&Take
Ta kes
Naming
Ta kes
S01 T001
S01 T002
S02 T001
S03 T001
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
TxPower
Sc&Take
Ta kes
Naming
Format
Files
Format
Record
Gain
Formats the microSDHC memory
card.
WARNING:This function erases
any content on the microSDHC
memory card.
Recorded File Naming
Choose to name the recorded files by the sequence
number, clock time or scene and take.
Naming
Seq #
Clock
Sc&Tak
SDCard..
Sc&Take
Format
Naming
SD Info
Information regarding the microSDHC memory card
including space remaining on card.
SDCard...
Format
Naming
SD Info
Max Rec
E.........................F
0/ 14G
NextName
0012A
Fuel gauge
Available recording
time (H : M : S)
Load Group
Choose the name of the frequency group on the SD
card to load.
SDCard...
SD Info
LoadGrp
SaveGrp
0007Amat
Date 01/06
Time 03:56
L 00:00:13
00 : 05 : 14
Next sequential
file name

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 13
Save Group
Choose the name of the frequency group to save onto
the SD card.
SDCard...
SD Info
LoadGrp
SaveGrp
TCode Menu
NOTE: The timecode input for the DBSM is in the
5-pin mic input. In order to use timecode, remove
the mic connector and replace it with a timecode
sync adapter cable.
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 confirm 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 affects embedding of the timing refer-
ence in the .BWF file metadata and display of timecode.
The following options are available:
• 30 • 23.976l • 24
• 29.97 • 30DF
• 25 • 29.97DF
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
The DBSM time clock and calendar (RTCC) cannot be
relied on as an accurate time code source. Use Clock
should only be used when there is no need for the time
to agree with an external timecode source.
TCode...
TC Jam
Fr. Rate
Use Clk
LOADING
TIMECODE
FROM
CLOCK
IR&Key Menu
SendFreq
Press MENU/SEL to sync the Frequency to another
transmitter or receiver via the IR port.
SendFreq
Sync-->
IR&Key...
SendFreq
SendAll
GetFrq
SendAll
Press MENU/SEL to sync: Frequency, Transmitter
Name, Talkback Enabled, and Compatibility Mode to
another transmitter or receiver via the IR port.
NOTE: SendAll does not send Encryption Key. This
must be done separately.
SendAll
Sync-->
IR&Key...
SendFreq
SendAll
GetFrq
GetFreq
Press MENU/SELto sync Frequency to another trans-
mitter or receiver via the IR port.
GetFrq
Sync-->
IR&Key...
SendFreq
SendAll
GetFrq

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
14
GetAll
Press MENU/SEL to sync: Frequency, Transmitter
Name, Talkback Enabled, and Compatibility Mode from
another transmitter or receiver via the IR port.
GetAll
Sync-->
IR&Key...
GetFrq
GetAll
KeyType
KeyType
The DBSM/DBSMD receives an encryption key via the
IR port from a key generating receiver. Begin by select-
ing a key type in the receiver and generating a new key
(key type is labeled KEY POLICY in the DSQD receiv-
er). Set the matching KEY TYPE in the DBSM/DBSMD
and transfer the key from the receiver (SYNC KEY)
to the DBSM/DBSMD via the IR ports. A confirma-
tion message will display on the receiver display if the
transfer is successful. The transmitted audio will then be
encrypted and can only be listened to if the receiver has
the matching encryption key.
KeyType
Univrsal
SendAll
GetFreq
GetAll
KeyType
The DBSM has four options for encryption keys:
• Standard: This is the most common level of se-
curity. The encryption keys are unique to the DBSM/
DBSMD and there are only 256 key instances
available to be transferred to a transmitter. The
receiver tracks the number of keys generated and
the number of times each key is transferred. Once a
Standard key has been transferred 256 times, you
will be alerted that a new key must be created.
• Shared: There are an unlimited number of
shared keys available. Once generated by the
DBSM/DBSMD and transferred to a transmitter, the
encryption key is available to be shared (synced) by
the transmitter with other transmitters/receivers via
the IR port.
• Universal: This is the most convenient encryp-
tion option available. All encryption-capable Lec-
trosonics transmitters and receivers contain the
Universal Key. The key does not have to be gener-
ated by the DBSM/DBSMD. Simply set a Lectroson-
ics encryption-capable transmitter and the DBSM/
DBSMDto Universal, and the encryption is in place.
This allows for convenient encryption amongst mul-
tiple transmitters and receivers, but not as secure
as creating a unique key.
• Volatile: This is the most robust encryption op-
tion available. If the transmitter is powered off, it
must be re-sync’d. If the receiver is powered off, a
new key must be generated and sent to the trans-
mitter. In encryption terms, this is the “one time use”
key management policy.
WipeKey
This menu item is only available if Key Type is set to
Standard, Shared or Volatile. Select Yes to wipe the
current key and enable the DBSM/DBSMD to receive a
new key.
WipeKey?
No
Ye s
IR&Key...
GetAll
KeyType
WipeKey
SetUp Menu
AutoOn
Press MENU/SEL to toggle the AutoOn feature on or
off.
AutoOn?
No
Ye s
Setup...
AutoOn?
Remote
BattType
Remote
Press MENU/SEL to toggle the Remote “dweedle tone”
feature on or off.
Remote
Enable
Ignore
Setup...
AutoOn?
Remote
BattType
BattType
Press MENU/SEL to select either Alkaline or Lithium
battery. Lithium batteries are recommended.
BattType
Alk.
Lith.
Setup...
AutoOn?
Remote
BattType

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 15
Clock
Press MENU/SEL to set the clock (time and date).
Clock
2000/
01/06
06: 40: 18
Setup...
BattType
Clock
Locked?
Locking/Unlocking Changes to Settings
Changes to the settings can be locked in the Power
Button Menu.
Locked?
No
Ye s
LOCKED
(menu to
unlock)
Clock
Locked?
DispOff
LED Off
When changes are locked, several controls and actions
can still be used:
• Settings can still be unlocked
• Menus can still be browsed
• When locked, POWER CAN ONLY BE TURNED
OFF by removing the batteries.
DispOff
Press MENU/SELto toggle the DisplayOff feature be-
tween 5 and 30 seconds, or set to constantly stay on.
DispOff?
On
30 sec
5 sec
Setup...
Locked?
DispOff
LED Off
LED 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 off. The
buttons will be disabled if the LOCKED option is select-
ed in the Power Button menu.
LEDs
On
Off
Setup...
Locked?
DispOff
LED Off
Default
Press MENU/SEL to restore the Default (factory) set-
tings.
Restore?
No
Ye s
Setup...
DispOff
LED Off
Default
About
Press MENU/SEL to display the model, the firmware
version, the software version and the serial number.
DBSM
V 0.23
/0.20
SN 1234
Setup...
LED Off
Default
About

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
16
The wiring diagrams included in this section represent
the basic wiring necessary for the most common types
of microphones and other audio inputs. Some micro-
phones may require extra jumpers or a slight variation
on the diagrams shown.
It is virtually impossible to keep completely up to date
on changes that other manufacturers make to their
products, thus you may encounter a microphone that
differs from these instructions. If this occurs please call
our toll-free number listed under Service and Repair in
this manual or visit our web site at:
www.lectrosonics.com
10k
1k
5
4
3
2
1
To Audio Amplifier
5V SOURCE
MIC
VOLTAGE SELECT
LINE IN
GND
+15uF
+5 VDC
Servo Bias
Pin 4 to Pin 1 = 0 V
Pin 4 Open = 2 V
Pin 4 to Pin 2 = 4 V
+
To Limiter Control
30uF
500 Ohm
100 Ohm
2.7K
200 Ohm
+
3.3uF
5-Pin Input Jack Wiring
Audio input jack wiring:
PIN 1
Shield (ground) for positive biased electret lavaliere
microphones. Shield (ground) for dynamic microphones
and line level inputs.
PIN 2
Bias voltage source for positive biased electret lavaliere
microphones that are not using servo bias circuitry and
voltage source for 4 volt servo bias wiring.
PIN 3
Microphone level input and bias supply.
PIN 4
Bias voltage selector for Pin 3.
Pin 3 voltage depends on Pin 4 connection.
Pin 4 tied to Pin 1: 0 V
Pin 4 Open: 2 V
Pin 4 to Pin 2: 4 V
PIN 5
Line level input for tape decks, mixer outputs, musical
instruments, etc.
Installing the Connector:
1) If necessary, remove the old connector from the
microphone cable.
2) Slide the dust boot onto microphone cable with the
large end facing the connector.
3) If necessary, slide the 1/8-inch black shrink tubing
onto the mircrophone cable. This tubing is needed
for some smaller diameter cables to ensure there
is a snug fit in the dust boot.
4) Slide the backshell over the cable as shown above.
Slide the insulator over the cable before soldering
the wires to the pins on the insert.
5) Solder the wires and resistors to the pins on the
insert according to the diagrams shown in Wiring
Hookups for Different Sources. A length of .065
OD clear tubing is included if you need to insulate
the resistor leads or shield wire.
6) If necessary, remove the rubber strain relief from
the TA5F backshell by simply pulling it out.
7) Seat the insulator on the insert. Slide the cable
clamp over the and of the insulator and crimp as
shown on the next page.
8) Insert the assembled insert/insulator/clamp into
the latchlock. Make sure the tab and slot align
to allow the insert to fully seat in the latchlock.
Thread the backshell onto the latchlock.
TA5F Latchlock Insert
Insulator Cable clamp
Backshell with
strain relief
Remove strain relief
if using dust boot
Backshell
without strain
relief Dust boot (35510)
Note: If you use the dust boot, remove the rubber
strain relief that is attached to the TA5F cap, or the
boot will not fit over the assembly.

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 17
NOTE: This termination is intended for UHF
transmitters only. VHF transmitters with 5-pin
jacks require a different termination. Lectrosonics
lavaliere microphones are terminated for
compatibility with VHF and UHF transmitters,
which is different from what is shown here.
Microphone Cable Termination
for Non-Lectrosonics Microphones
TA5F Connector Assembly
Mic Cord Stripping Instructions
1
23
4
5
VIEW FROM SOLDER
SIDE OF PINS
0.3"
0.15"
Crimping to Shield and Insulation
Shield
Insulation
Strip and position the cable so that the clamp
can be crimped to contact both the mic cable
shield and the insulation. The shield contact
reduces noise with some microphones and the
insulation clamp increases ruggedness.
Crimp these
fingers to
contact the
shield
Crimp these
fingers to
clamp the
insulation

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
18
Input Jack Wiring for Different Sources
BALANCED AND FLOATING LINE LEVEL SIGNALS
*NOTE: If the output is balanced but center
tapped to ground, such as on all Lectrosonics
receivers, do not connect Pin 3 of the XLR jack
to Pin 4 of the TA 5F connector.
TA 5F
PLUG
XLR JACK
Fig. 7
Comp
atible Wiring for Both Servo Bias Inputs and Earlier Transmitters:
Simple Wiring - Can ONLY be used with
Servo Bias Inputs:
Servo Bias was introduced in 2005 and all trans-
mitters with 5-pin inputs have been built with this
feature since 2007.
In addition to the microphone and line level wiring hook-
ups illustrated below, Lectrosonics makes a number of
cables and adapters for other situations such as con-
necting musical instruments (guitars, bass guitars, etc.)
to the transmitter. Visit www.lectrosonics.com and
click on Accessories, or download the master catalog.
A lot of information regarding microphone wiring is also
available in the FAQ section of the web site at:
http://www.lectrosonics.com/faqdb
Follow the instructions to search by model number or
other search options.
SHIELD
TIP
PIN
5
4
3
2
1
SLEEVE
LINE LEVEL
RCA or 1/4” PLUG
AUDIO 1
2
3
4 5
TA5F
PLUG
UNBALANCED LINE LEVEL SIGNALS
For signal levels up to 3V (+12 dBu) before limiting. Fully
compatible with 5-pin inputs on other Lectrosonics transmitters
such as the LM and UM Series. A 20k ohm resistor can be
inserted in series with Pin 5 for an additional 20 dB of
attenuation to handle up to 30V (+32 dBu).
Fig. 8
1
2
3
4
5
PIN
SHIELD
AUDIO
1
2
3
45
TA5F
PLUG
2.7 k
2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET
Compatible wiring for microphones
such as negative bias TRAM models.
NOTE: The resistor value can range from 2k to 4k ohms.
Fig. 4
Fig. 11
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET
NOTE: This servo bias wiring is not compatible with earlier
versions of Lectrosonics transmitters. Check with the factory
to confirm which models can use this wiring.
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET
Simplified wiring for microphones
such as Countryman B6 Lavalier
and E6 Earset models and others.
NOTE: This servo bias wiring is not compatible with earlier
versions of Lectrosonics transmitters. Check with the factory
to confirm which models can use this wiring.
Fig. 9
Fig. 3 - DPA Microphones
DANISH PRO AUDIO MINIATURE MODELS
This wiring is for DPA lavalier
and headset microphones.
NOTE: The resistor value can range from 3k to 4 k ohms.
Same as DPA adapter DAD3056
Fig. 10
2 VOLT NEGATIVE BIAS 2-WIRE ELECTRET
Simplified wiring for microphones such as negative bias TRAM.
NOTE: This servo bias wiring is not compatible with earlier
versions of Lectrosonics transmitters. Check with the factory
to confirm which models can use this wiring.
Fig. 6
LO-Z MICROPHONE LEVEL SIGNALS
For low impedance dynamic mics or electret
mics with internal battery or power supply.
XLR JACK
Insert 1k resistor in series with pin 3 if attenuation is needed
Fig. 1
1
2
3
4
5
PIN
SHIELD
AUDIO 1
2
3
4 5
TA5F
PLUG
3.3 k
1.5 k
2 VOLT POSITIVE BIAS 2-WIRE ELECTRET
Compatible wiring for microphones such as
Countryman E6 headworn and B6 lavaliere. Also see Fig. 9
4 VOLT POSITIVE BIAS 2-WIRE ELECTRET
Most common type of wiring for
lavaliere mics.
Fig. 2
WIRING FOR LECTROSONICS M152/5P
(N/C)
WHITE
RED
The M152 lavaliere microphone
has an internal resistor and can be
wired in a 2-wire configuration.
This is the factory standard wiring.
Fig. 5 - Sanken COS-11 and others
DRAIN (BIAS)
SOURCE (AUDIO)
SHIELD
4 VOLT POSITIVE BIAS 3-WIRE ELECTRET
WITH EXTERNAL RESISTOR
Also used for other 3-wire
lavaliere microphones that
require an external resistor.

Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM 19
Microphone RF Bypassing
When used on a wireless transmitter, the microphone
element is in the proximity of the RF coming from the
transmitter. The nature of electret microphones makes
them sensitive to RF, which can cause problems with
microphone/transmitter compatibility. If the electret
microphone is not designed properly for use with wire-
less transmitters, it may be necessary to install a chip
capacitor in the mic capsule or connector to block the
RF from entering the electret capsule.
Some mics require RF protection to keep the radio sig-
nal from affecting the capsule, even though the trans-
mitter input circuitry is already RF bypassed.
If the mic is wired as directed, and you are having dif-
ficulty with squealing, high noise, or poor frequency
response, RF is likely to be the cause.
The best RF protection is accomplished by installing RF
bypass capacitors at the mic capsule. If this is not pos-
sible, or if you are still having problems, capacitors can
be installed on the mic pins inside the TA5F connec-
tor housing. Refer to the diagram below for the correct
locations of capacitors.
Use 330 pF capacitors. Capacitors are available from
Lectrosonics. Please specify the part number for the
desired lead style.
Leaded capacitors: P/N 15117
Leadless capacitors: P/N SCC330P
All Lectrosonics lavaliere mics are already bypassed
and do not need any additional capacitors installed for
proper operation.
CAPSULE
CAPSULE
SHIELD
AUDIO
SHIELD
AUDIO
BIAS
TA5F
CONNECTOR
TA5F
CONNECT
OR
2-WIRE MIC 3-WIRE MIC
Capacitors next
to mic capsule
Capacitors in
TA5F connector
Line Level Signals
The wiring for line level and instrument signals is:
• Signal Hot to pin 5
• Signal Gnd to pin 1
• Pin 4 jumped to pin 1
This allows signal levels up to 3V RMS to be applied
without limiting.
NOTE for line level inputs only (not instrument):
If more headroom is needed, insert a 20 k resistor
in series with pin 5. Put this resistor inside the
TA5F connector to minimize noise pickup. The
resistor will have little or no effect on the signal if
the input is set for instrument.
See Fig. 8 on
previous page
Line Level
Normal Wiring
Line Level
More Headroom
(20 dB)

DBSM-A1B1, DBSM/E01-A1B1, DBSMD-A1B1, DBSMD/E01-A1B1
LECTROSONICS, INC.
20
Firmware Update
Firmware updates are made using a microSDHC
memory card. Download and copy the following firm-
ware update files to a drive on your computer.
• dbsm vX_xx.ldr is the firmware update file, where
“X_xx” is the revision number.
In the computer:
1) Perform a Quick Format of the card. On a Win-
dows-based system, this will automatically format
the card to the FAT32 format, which is the Windows
standard. On a Mac, you may be given several
options. If the card is already formatted in Win-
dows (FAT32) - it will be greyed out - then you do
not need to do anything. If the card is in another
format, choose Windows (FAT32) and then click
“Erase”. When the quick format on the computer is
complete, close the dialogue box and open the file
browser.
2) Copy the dbsm vX_xx.ldr file to the memory card,
then safely eject the card from the computer.
In the DBSM:
1) Leave the DBSM turned off and insert the microS-
DHC memory card into the slot.
2) Hold down both the UP and DOWN arrow buttons
on the recorder and turn the power on.
3) The recorder will boot up into the firmware update
mode with the following options on the LCD:
• Update - Displays a scrollable list of the .ldr files
on the card.
• Power Off - Exits the update mode and turns the
power off.
NOTE: If the unit screen shows FORMAT CARD?,
power the unit off and repeat step 2.You were not
properly pressing UP, DOWN and Power at the
same time.
4) Use the arrow buttons to select Update. Use the
UP and DOWN arrow buttons to select the desired
file and press MENU/SEL to install the firmware.
The LCD will display status messages while the
firmware is being updated.
5) When the update is complete, the LCD will display
this message: UPDATE SUCCESSFUL REMOVE
CARD. Open the battery door and remove the
memory card.
6) Re-attach the battery door and power the unit back
on. Verify that the firmware version was updated by
opening the Power Button Menu and navigating to
the About item. See page 6.
7) If you re-insert the update card and turn the power
back on for normal use, the LCD will display a mes-
sage prompting you to format the card:
Format Card?
(files lost)
• No
• Yes
If you wish to record audio on the card, you must
re-format it. Select Yes and press MENU/SEL to
format the card. When the process is complete, the
LCD will return to the Main Window and be ready
for normal operation.
If you choose to keep the card as is, you may re-
move the card at this time.
The firmware update process is managed by a boot-
loader program - on very rare occasions, you might
need to update the bootloader.
WARNING: Updating the bootloader can
corrupt your unit if interrupted. Don’t update
the bootloader unless advised to do so by the
factory.
• dbsm_boot vX_xx.hex is the bootloader file
Follow the same process as with a firmware update and
select the dbsm_boot file.