JSB283 USB Watch Dog Timer WDT Module

It is a fact of life that a computer, hardware device or program may fail. To reduce the risk and possible damage a failure can cause, there is two possible methods (1) redundancy (2) watchdog timer. Neither method offer 100% protection, but both reduce risk or consequences of failure. Redundancy, a duplication of hardware is very expensive. On the other hand the JSB283WDT offers excellent protection at a very low cost. The host computer or application must communicate with the JSB283 by sending a message over the USB port. If the communication does not occur within that programmed time frame, the JSB283 will trigger a relay to switch states based on the model for a programmable amount of time. Model flow overview For model 1 the relay is open, and will close when a timeout occurs. For the model 2 module, the relay is closed when power is applied to the module. Model 3 modules the relay is closed when the wdt is enabled. Then for models 2 & 3 the relay will open if a timeout occurs or power is removed from the module usb port. On model EXT the setup times are preset and uses external power. When the first reset pulse is received the watchdog timer function is enabled. The preset timess are 1 second for the reset time, and the relay stays open for 3 seconds, then closes (which is also the power on state. This model is used for applications where no setup is required and can cycle power on the same unit it is attached to. The -EXT-AUTO is enable once external power is applied and the relay will be closed, if a reset pulse is not received by the module within 5 minutes, the relay will open for 5 seconds, then close again, and the wdt will be enabled again. Wire connection to the module relay contacts is with high quality screw type terminal blocks.
Single unit cost starts at USD$ 49.75
JSB283 USB Watch Dog Timer WDT Module
Features
* Double Pole Double Throw Relays
* 8 Amp rated
* Rated for AC and DC voltages
* High Quality Terminal Block Connections
* High-Speed USB 2.0 device, USB 1.1 compatible
* Type B USB connector high-retention design
* All needed power drawn from USB port, no external power required for card
* Custom 32 and 64 bit Microsoft Windows drivers provided
* Info for linux and other OS support under software tab
Specifications
* Relay Ratings
AC Ratings: 8A @ 240VAC
DC Ratings: 8A @ 30VDC derated @ 300VDC
Max Switch Voltage 300VDC 400VAC
Contact Resistance: 150mOhm Max
Relay Closing 7msec
Relay Release 2msec
* WDT Time interval user programmable from 100 millisecs to 60 minutes
* Reset time programmable from 100millisec to 10 seconds or left on
* -R version resets USB firmware at end of timeout
* Self Powered from USB (high power Hub)
*Operating Temperature: -20 to +70 C
*Storage Temperature: -40 to +105 C
*Humidity 5% to 90% RH, without condensation
Software
Most of our customers write their own program for controlling our devices. With our provided API's you can use any programming language that supports DLL so you do not have to learn a whole new language. We provide two types of DLL api, first is the older standard DLL with both mangled calls and "C" calls. The second is the managed Class Library that supports all the new managed languages. Any programming language that supports calls to Windows DLL can also be used to control the cards. The software interface is easy to use from Visual Basic, Visual C# Visual C++ via a standard windows DLL with sample source included. Linux driver support CD available. Each module has an unique serial number string which allows multiple USB boards to be controlled by the host USB controller as individual USB devices. Click on blue tabs above to view other information about the module.
Ordering
JSB283WDT-01 USB 8A DPDT WDT close on timeout Module Enter Qty
1-9 $49.75ea.
10- 49 $43.5ea.
50+ $39.5ea.
Add to Cart
JSB283WDT-02 USB 8A DPDT WDT open on timeout Module Enter Qty
1-9 $49.75ea.
10- 49 $43.5ea.
50+ $39.5ea.
Add to Cart
JSB283WDT-03 USB 8A DPDT Watch Dog Timer WDT close on enable Module Enter Qty
1-9 $49.75ea.
10- 49 $43.5ea.
50+ $39.5ea.
Add to Cart
JSB283WDT-R-01 USB 8A DPDT WDT close on timeout (Reset) Enter Qty
1-9 $49.75ea.
10- 49 $43.5ea.
50+ $39.5ea.
Add to Cart
JSB283WDT-R-02 USB 8A DPDT WDT open on timeout (Reset) Enter Qty
1-9 $49.75ea.
10- 49 $43.5ea.
50+ $39.5ea.
Add to Cart
JSB283WDT-R-03 USB 8A DPDT Watch Dog Timer WDT close on enable (Reset) Enter Qty
1-9 $49.75ea.
10- 49 $43.5ea.
50+ $39.5ea.
Add to Cart
JSB283WDT-EXT USB 8A DPDT Watch Dog Timer WDT with presets and external power input Enter Qty
1-9 $64ea.
10- 49 $55.75ea.
50+ $50.75ea.
Add to Cart
JSB283WDT-EXT-AUTO USB 8A DPDT Watch Dog Timer WDT with auto time (5 sec) Enter Qty
1-9 $64ea.
10- 49 $55.75ea.
50+ $50.75ea.
Add to Cart
JSB283WDT-99 WDT Original Firmware (not for new designs) Enter Qty
1-9 $59ea.
10- 49 $56ea.
50+ $52.25ea.
Add to Cart
JSB283wdt-Linux Linux Support Disk (one time purchase) Enter Qty
1-9 $30ea.
10- 49 $30ea.
50+ $30ea.
Add to Cart

JSB283-WDT USB Watchdog Timer Module

*Open Connector pdf file (printable)
JSB283WDT Watchdog timer Pinout Dwg
*Open Mechanical pdf file (printable)
JSB283WDT Watchdog timer Mechanical Dwg
*Open Interface pdf file (printable)
*Open Interface pdf file (printable)
Software Downloads
*Download Complete CD ver 2.0 (zip file)
Labview Support
*Download Using Labview (pdf file)
Non-Windows OS Support (Linux and others)
*Download Using non-windows OS (pdf file)
Important readme about using dll with versions of windows .net Readme pdf
On some installations of Windows 7 and Windows 8 that are not configured to search the CD for drivers, it may show driver
not install and you need to do a manual install. If there is not yet a custom install under software downloads
you can download the pdf and zip of the generic install and copy your existing driver files from the CD, or do a manual install from PDF
Readme pdf
Generic install zip file
View Videos at Google+
J-Works,Inc
Email: sales@j-works.com
Solution Graphics

Page Last Updated May 16, 2016