User's Manual
Digital Hybrid Wireless Belt-Pack Transmitters
Rio Rancho, NM
5
Battery Installation
The transmitter is powered by AA batteries. (The SMWB 
requires one AA battery and the SMDWB requires two.)
We recommend using lithium for longest life. 
Because some batteries run down quite abruptly, using 
the Power LED to verify battery status will not be reli-
able. However, it is possible to track battery status using 
the battery timer function available in Lectrosonics 
Digital Hybrid Wireless 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 20. 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 
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.
Formatting SD Card
New microSDHC memory cards come pre-formatted 
with a FAT32 file system which is optimized for good 
performance. The PDR relies on this performance and 
will never disturb the underlying low level formatting 
of the SD card. When the SMWB/SMDWB “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 SMWB/SMDWB to prepare it 
again for recording. The SMWB/SMDWB never low level 
formats a card and we strongly advise against doing so 
with the computer. 
To format the card with the SMWB/SMDWB, 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 SMWB/SMDWB 
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 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 SMWB/SMDWB 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 SMWB/SMDWB 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 SMWB/SMDWB 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.










