Sensoray 2231 User manual

SENSORAY | p. 503.684.8005 | email:[e-mail] | www.SENSORAY.com
7313 S Tech Center Drive | Portland, OR 97203
Analog HD USB
Video Capture Device
Model 2231
Hardware Manual
Ver. 1.0.0 | September 2018

2
Table of Contents
Limited warranty ....................................................................................................... 3
Introduction .............................................................................................................. 4
System Requirements ................................................................................................ 5
Block Diagram .......................................................................................................... 6
Connectors ...............................................................................................................
JP1, video inputs/output ........................................................................................
JP2, audio inputs ...................................................................................................
JP3, power ............................................................................................................ 8
JP6, interfaces ....................................................................................................... 8
Specifications ............................................................................................................ 9
Software................................................................................................................. 10
Firmware updates ................................................................................................... 11
Thermal Considerations ........................................................................................... 12
Revision history ...................................................................................................... 13

3
Limited warranty
Sensoray Company, Incorporated (Sensoray) warrants the hardware to be free from defects
in material and workmanship and perform to applicable published Sensoray specifications
for two years from the date of shipment to purchaser. Sensoray will, at its option, repair or
replace equipment that pro es to be defecti e during the warranty period. This warranty
includes parts and labor.
The warranty pro ided herein does not co er equipment subjected to abuse, misuse,
accident, alteration, neglect, or unauthorized repair or installation. Sensoray shall ha e the
right of final determination as to the existence and cause of defect.
As for items repaired or replaced under warranty, the warranty shall continue in effect for
the remainder of the original warranty period, or for ninety days following date of shipment
by Sensoray of the repaired or replaced part, whiche er period is longer.
A Return Material Authorization (RMA) number must be obtained from the factory and
clearly marked on the outside of the package before any equipment will be accepted for
warranty work. Sensoray will pay the shipping costs of returning to the owner parts that are
co ered by warranty. A restocking charge of 25% of the product purchase price will be
charged for returning a product to stock.
Sensoray belie es that the information in this manual is accurate. The document has been
carefully re iewed for technical accuracy. In the e ent that technical or typographical errors
exist, Sensoray reser es the right to make changes to subsequent editions of this document
without prior notice to holders of this edition. The reader should consult Sensoray if errors
are suspected. In no e ent shall Sensoray be liable for any damages arising out of or related
to this document or the information contained in it.
E XCEPT AS SPECIFIED HEREIN, SENSORAY MAKES NO WARRANTIES, EXPRESS OR
IMPLIED, AND SPECIFICALLY DISCLAIMS ANY WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE. CUSTOMER’S RIGHT TO RECOVER DAMAGES
CAUSED BY FAULT OR NEGLIGENCE ON THE PART OF SENSORAY SHALL BE LIMITED
TO THE AMOUNT THERETOFORE PAID BY THE CUSTOMER. SENSORAY WILL NOT BE
LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS,
OR INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED OF THE
POSSIBILITY THEREOF.
Third party brands, names and trademarks are the property of their respecti e owners.

4
Introduction
Model 2231 captures ideo from an analog HD (TVI, CVI, AHD) or SD (composite)
source. It has a USB 2.0 interface. Model 2231 captures scaled down HD or nati e
resolution SD uncompressed ideo, and will o erlay and compress resolutions up to
1080p30. It can simultaneously send both compressed and uncompressed ideo to the
host computer.
Analog audio can be captured from a microphone or line source. Audio may be sent
uncompressed, or it may be compressed and multiplexed into a transport stream along
with compressed ideo, or both simultaneously.
The 2231 is a UVC (USB Video Class) de ice, which means it does not require a de ice-
specific dri er and can be easily controlled using popular ideo APIs such as
DirectShow and Video4Linux. Sensoray pro ides Software De elopment Kits (SDKs)
for se eral operating systems to accelerate application de elopment. Our fully
functional demo program illustrates model 2231's capabilities and ser es as an excellent
starting point for custom designs.
The ideo processor implements efficient H.264 ideo compression, producing output
data formatted as either MPEG transport stream (MPEG-TS) or in MP4 or AVI file
formats. Audio compression is performed using AAC-LC. The stream multiplexer
employs high precision hardware timestamps to ensure perfect audio- ideo sync on
players. Snapshot capture is also supported, with MJPEG compression a ailable for
both snapshots and AVI streams.

5
System Requirements
USB 2.0 high speed port is required. Model 2231 is a bus powered de ice. It is not
recommended to plug the 2231 into USB hubs, since some of those do not pro ide
sufficient bandwidth. If used, the hubs must be powered, capable of pro iding standard
de ice current of 0.5 A.
Supported operating systems:
Windows 7, 8, 10;
Linux 2.6, 3.x, 4.x.

6
Block Diagram
Fig.1. Model 2231 block diagram.

7
Connectors
All mating connectors use crimping contacts Molex 0500798100 for 26-28 AWG wire.
Contacts labeled "reser ed" should be left unconnected.
JP1, video inputs/output
Molex 0532610671. Mating part: Molex 51021-0600.
Pin Signal
1
composite out
2 ground
3
ideo input 1
4 ground
5
ideo input 2
6 ground
JP2, audio inputs
Molex 0532610771. Mating part: Molex 51021-0700.
Pin Signal
1 ground
2
microphone in +
3
microphone in
-
4
ground
5 line input right
6 ground
7 line input left
Note: microphone input expects an electret condenser microphone:

8
JP3, power
Molex 0532610571. Mating part: Molex 51021-0500.
Pin Signal
1 ground
2
reser ed
3
reser ed
4
power,
-
(ground)
5 power (9-36 V), +
JP6, interfaces
Molex 0532611071. Mating part: Molex 51021-1000.
Pin
Signal
1 reser ed
2
reser ed
3 ground
4
reser ed
5
reser ed
6 ground
7
ground
8 USB data -
9
USB data +
10 USB +5V (V
BUS
)

9
Specifications
Video Input/Output
Input ideo formats
HD
-
TVI, HD
-
CVI, AHD, composite (NTSC/PAL)
Maximum
resolution/frame rate
1920x1080p30
Video output NTSC/PAL, scaled down ideo for HD input formats
Output ideo
streams
H.264
High Profile @ Le el 3 (MP4, AVI, transport stream)
JPEG Single snapshots, AVI
Raw (uncompressed)
UYVY (
scaled down
)
Electrical, mechanical and en ironmental
Dimensions 48x25x10 mm
Mass 16 g
Operating temperature
0º to 70º C
.
Please see
"
Thermal considerations
"
section.
Interface USB 2.0
Power
USB bus powered
, not to exceed 2.5 W

10
Software
Software (Windows and Linux)
Dri er UVC ideo
SDK Library wrappers around the DirectShow
(Windows) or V4L2 (Linux) APIs

11
Firmware updates
Model 2231 features flash memory that contains the firmware used to operate the
hardware on the de ice. This firmware can updated in the field to fix problems or add
new features.
Firmware is updated by selecting an Update option in the demo application a ailable as
part of the SDK, or by calling the corresponding SDK function. Upon those actions the
de ice reconnects as a USB mass storage de ice with the name Update2263. (If the
AutoPlay menu appears, choose the “Open folder to iew files option”). In this mode, a
new firmware file may be copied to the Update2263 folder. While the file is being
written to the flash memory, the red LED blinks. Do not unplug the de ice while the
red LED is blinking. After the update is complete, the Update2263 folder is closed, and
the 2231 reconnects as a UVC de ice. To cancel the update mode without updating
firmware, right click the Update2263 remo able de ice in Computer and click Eject. In
the unlikely e ent that a firmware update was interrupted in a way that pre ents the
de ice from operating, an original firmware mode (Safe Boot mode) is a ailable.
Original firmware is loaded in case the new image is corrupt. Running firmware
ersion can be detected using the demo application, or by calling the corresponding
SDK function.

12
T ermal Considerations
Measures must be taken to remo e about 1 W of heat from the integrated circuit U1 on
the ideo processor board (marked as model 2960). The implementation choice depends
on the mechanical and en ironmental requirements of the particular application.
Fig.2. Location of U1 on model 2960 board.
One approach is to use a miniature self-adhesi e heat sink, for example Ad ance
Thermal Solutions ATS-54150D-C1-R0.
Alternati ely, a heat conducting path may be pro ided between U1 and the product's
enclosure. To ensure good thermal contact and a oid damaging the de ice we
recommend using Bergquist (or equi alent) thermal pads with the highest thermal
conducti ity possible (5.0 W/m*K), for example, GPHC5.0 or GP5000S35 of the smallest
possible thickness.
In any case the temperature of U1 should not exceed 85°C during operation.

13
Revision istory
Version Notes
1.0.0, September 2018 Initial release.