Electronic Signature Solutions for Wherever Business Takes You.

Hardware FAQ

Information about Topaz electronic signature pad technology

  • What are the key features of Gem-series tablets from Topaz®?

    1) Rugged, portable units with ink or plastic cartridge. Survives scratches, cuts, and even being run over by a truck!

    2) Built-in pen tether and pen holder.

    3) The highest-performance tablets, designed for electronic signature capture. 377 points per second conversion rate (half are reported)

    4) Powerful signature capture drivers and software on all standard authorized tablets where all updates and support are free.

    5) All Topaz verification and security tools supporting your application in the background.

    6) A range of sizes from LCD 1X5 to a full legal-sized clipboard tablet, including LCD-based pads and very-low-cost touch pads.

    7) Software tools that work across the entire product line, allowing software learning to apply to many different application areas in your company.

  • What is the reliability of a Topaz system - both calculated and in the field?

    Calculated non-LCD pad MTBF is greater than 500,000 hours (greater than 50 years).


    Calculated LCD pad MTBF is greater than 100,000 hours (greater than 10 years).


    Actual field use experiences are really what determine the reliability of the tablet, and Topaz has a lot of experience in the field. This includes a single Topaz pad capturing well over 1 million signatures in the field. Topaz units have survived being driven over by a small truck. The Topaz pen has been qualified to over 30 million activations and high G-forces. Our experience is that of field reliability. It's the technology and attention to all of the little things that makes the difference.

  • What is the Topaz field Hot-swap Program?

    If you are a qualifying corporate account and have a problem in the field, Topaz will send a replacement tablet and pen to you before you have returned the problem unit. After you receive the replacement unit, simply return the old unit to Topaz.

  • Why do we say that a Topaz tablet is "the standard for signature capture?"

    Topaz electronic signature pads have been deployed in the millions over the past 15 years.  Because Topaz has been in the business for so many years, millions of people have successfully used our products and software as they have been deployed with thousands of independent software applications.  With the wide use of Topaz pads and software, you and your application benefit from the network effects of the Topaz eSign Ecosystem®, including familiarity of use, the ability of a single Topaz pad to support multiple applications, and so on.

  • How can I test the SignatureGem® or ClipGem® pen to be sure that it is working?

    Tap the tip of the pen to the case of an operating AM radio set to a low frequency (between 530 and 550 khz). If you hear a whining sound in the speaker, and if the pitch of the whine changes when the pen tip is pressed and released, then the pen is OK.

  • How do I change the ink tip in the pen?

    DO NOT OPEN THE PEN! The pen tip is removed from the tip of the pen and replaced all from the open end of the pen. Simply grasp the tip of the cartridge and pull it out from the end of the pen. If the pen is forced open, it will be virtually impossible to re-assemble without special factory tools.

  • Should I consider using a "pressure-sensing" tablet?

    Topaz does not recommend the use of tablets which sense variable pen pressure (although we do provide pressure-sensing pens for some products as an option).  Pressure information is highly variable and dependent on the environment of use and mood of the signer.  If the pressure part of the signature data recorded is unreliable, the whole signature can become unreliable.

  • How are the Topaz LCD tablets with serial interface installed on my computer?

    Topaz LCD tablets with serial interface require more power than can be provided by just the serial port of your PC.  Therefore these tablets are supplied with the cables needed to power the unit from the keyboard port while sending the signature data to the standard serial port.  To view the installation instructions for LCD tablets, click here. An AC wall transformer is available for those who would prefer it. Please contact the factory for more information.

  • How do I replace my SignatureGem or ClipGem pen's batteries if they run out?

    To replace pen batteries, rotate the rear pen cap one quarter turn counter-clockwise and remove. Remove the old batteries and replace with type #393, available at most drug stores and supermarkets. Replace the pen cap and lock into place with one quarter turn clockwise.

  • What is the difference between USB and HSB® signature pads?

    Topaz old “–USB” suffix Topaz pads were succeeded many years ago by our “HSB” suffix pads.  The "-HSB" model is a USB-connected pad which uses the Human Interface Device (HID)-type of USB driver built into Windows and other leading operating systems and computers.

  • Should I upgrade from USB to HSB?

    Yes.  If you are the original purchaser of the tablet, Topaz has a program in place to bring you up-to-date with an HSB model.

  • How can I upgrade to HSB?

    Simply purchase a -HSB suffix tablet. Install the SigPlus® software and select the -HSB option when prompted to do so. To see if you have a -USB or -HSB tablet, check on the back of the unit and determine the suffix of the part number. If your tablet has a "-CXXX" suffix, please contact the factory.

  • In terms of temperature and humidity, what are the operating ranges for SignatureGem and SigLite pads?

    Operating temperature is 0 to 40 C. Storage temperature can be -20 to +60 C. Humidity can be 10-90% RH, non-condensing.

  • How do I set up my serial LCD tablet?

    Please view the LCD Serial Troubleshooting Guide for information on how to set up your serial LCD tablet.

  • My non-LCD serial tablet has stopped functioning. How do I get it up and running again?

    To get your non-LCD serial tablet up and running again, follow the instructions in the Serial Troubleshooting Guide.

  • How do I correctly install my serial-to-USB adapter to work with my Topaz tablet?

    To install your serial-to-USB adapter, follow the steps in the Serial-USB Adapter Guide.

  • My signature calibration is off. How do I recalibrate it?

    For recalibration instructions, view the LCD Field Calibration How-To.

  • How do I connect my Topaz serial tablet to a network?

    To connect your Topaz serial tablet to a network, you must utilize the ethernet adapter and cable. View the Ethernet Adapter How-To for installation.

  • I have an LCD 4x5 and want to adjust the contrast. How do I do that?

    View the LCD Contrast Adjustments for tips on how to adjust the contrast of your LCD 4x5 tablet.

  • How can I check to see if my Topaz tablet is working without wondering if the problem is in the application and not the tablet?

    Use Demo.OCX full tablet functionality testing. To view the Demo OCX How-To, click here.

  • How can I change my software to accept a different tablet type without reinstalling SigPlus?

    You can change your software to accept a different tablet type by using SigPlus Adjust™. To view the SigPlus Adjust How-To, click here.







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