CMX High Performance Material & Coating Thickness Gauge

7.4 Gain

The gain, or amplification of the return echoes, can be adjusted in the CMX to accommodate a variety of applications. The setting of the gain is crucial in order to obtain valid readings during the measurement process. Too much gain may result in erroneous measurements, by detecting on noise rather than the actual material back wall itself. Not enough gain may result in intermittent detection. It may also result in lack of detection on internal flaws, pits, or porosity. The gain can easily be compared to the volume control of a home stereo system. If you turn it up too muc h, you can’t hear the music clearly. If it’s turned down too much, you can’t hear it at all.

The CMX has three gain settings (VLOW, LOW, MED, HI, VHI). The gain range is 42dB – 50dB in 2dB increments. Note: The CMX has been optimized for the MED gain setting for all common applications. It should be operated in this mode as standard. However, some applications may require the lower or higher gain settings. When? The low settings may be necessary for noisy or granular cast materials. How do I know when to lower the gain? If the reading becomes sporadic and won’t settle down or resolve on a thickness value, the user can assume that the material is either very noisy aluminum, or granular cast iron. This would be a good time to change the CMX to lower gain setting and see if the reading settles down and become stable.

How do I know when to increase the gain? Often times the user will be trying to measure a material that is hard to penetrate or pass sound through. This may be due to the material type, or overall thickness of the material. When a material is hard to pass sound through because of the thickness or general make-up, it would be a good time to consider switching the CMX into a higher gain setting. Another example might be the need to i ncrease overall sensitivity for locating fine pits or flaws. In any case, the selectable gain settings offer the user some additional options to resolve and overcome application issues.

Note: When the echo-echo thru-paint measurement mode is selected, the manual

gain feature is disabled and grayed out in the menu items. In this mode, the CMX switches to an automatic gain mode (AGC) that optimizes the gain setting automatically in the hardware of the CMX.

The procedures to adjust the Gain are outlined below:

63

Page 67
Image 67
Dakota Digital CMX operation manual Gain

CMX specifications

Dakota Digital CMX series represents a cutting-edge advancement in the world of digital instrumentation, designed specifically for automotive enthusiasts and restorers seeking to enhance their vehicle’s dashboard aesthetics and functionality. Characterized by its sleek appearance and intelligent design, the CMX offers a multitude of features that cater to modern demands while preserving the classic vehicle feel.

One of the standout features of the Dakota Digital CMX is its customizable display. The series provides an array of screen layouts and color schemes that allow users to personalize their instrumentation according to individual preferences. This flexibility not only enhances the visual appeal but also aids in quickly obtaining critical information at a glance, improving overall driver convenience.

The CMX is equipped with state-of-the-art technology, including high-definition OLED displays that ensure crisp visibility in all lighting conditions. This technological advancement makes the instrument panel not only easy to read but also optimally functional in both bright sunlight and low-light situations. The ambient light sensors adjust brightness automatically, promoting user comfort.

Another defining characteristic of the Dakota Digital CMX is its comprehensive data logging and diagnostic capabilities. Integrated advanced sensors enable real-time monitoring of various vehicle metrics, such as speed, RPM, fuel level, and engine temperatures. This feature aids users in maintaining their vehicle's performance and in diagnosing potential issues before they escalate into more severe problems.

The CMX series supports numerous vehicle types, with a compatibility range that includes classic muscle cars, street rods, and even motorcycles. Furthermore, it incorporates Bluetooth technology, allowing users to connect their smartphones for further customization and real-time data analysis via an associated app.

Installation is designed to be user-friendly, making it accessible even for those with limited automotive knowledge. The system typically utilizes plug-and-play wiring harnesses, simplifying the overall setup process. Additionally, the CMX series is engineered to withstand the harsh environments often found in automotive applications, ensuring durability and longevity.

In summary, the Dakota Digital CMX series exemplifies a harmonious blend of modern technology and classic style. With customizable displays, advanced diagnostics, excellent visibility, and robust construction, it is a top choice for those looking to elevate their vehicle’s instrumentation. The CMX not only provides essential information but also transforms the driving experience, making it both informative and enjoyable.