Instruction Manual
Digital Hybrid
®
 Plug-On Transmitter
Rio Rancho, NM
9
IMPORTANT 
The formatting of the SD card sets up contiguous 
sectors 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 
recorder, 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 
Windows 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 
computer (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 record-
er. 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.
Compatibility with 
microSDHC memory cards
Please note that the SMWB and SMDWB are de-
signed 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 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 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.
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










