As I found no way to open the mouse, I had to rely on the less accurate and reliable "bump test." Click latency has been measured to be in the range of +4.5–5.5 ms when compared to the SteelSeries Ikari, which is considered as the baseline with 0 ms. As there is no way to measure said delay directly, it has to be done by comparing it to a control subject, which in this case is the Logitech G203. Debouncing typically adds a delay (along with any potential processing delay), which shall be referred to as click latency. Keep in mind that LOD may vary slightly depending on the mousing surface (pad) it is being used on.Ĭlick LatencySince mechanical switches are being used for the buttons in most computer mice, debouncing is required in order to avoid unintended double clicks. At the "3 mm" setting, the sensor does track at a height of 1 DVD, but not at a height of 2 DVDs (1.2 Pro X3 Supreme provides two pre-defined LOD levels to choose from and the ability to perform a manual calibration. Lastly, there is no sensor lens movement. 16,000 CPI has major jitter despite the ridiculous amount of smoothing present at that step. 3200 CPI has the first level of smoothing applied and shows no jitter, either. As you can see, no issues with angle snapping can be observed. This test is used to indicate any potential issues with angle snapping (non-native straightening of linear motion) and jitter, along with any sensor lens rattle. Pro X3 Supreme is moved first and thus receives a slight head start. In this case, the control subject is a G403, whose 3366 has no visible smoothing across the entire CPI range. As there is no way to accurately measure motion delay absolutely, it can only be done by comparison with a control subject that has been determined to have the lowest possible motion delay. The goal here is to have as little smoothing as possible. The main thing I'll be looking for in this test is sensor smoothing, which describes an averaging of motion data across several capture frames in order to reduce jitter at higher CPI values, increasing motion delay along with it. Any further sources of input delay will not be recorded in this test. Motion Delay"Motion delay" encompasses all kinds of sensor lag. The above shot of an oscilloscope reading has been given to me as evidence. While I'm still confident in my findings, I want to provide this perspective as well. Mad Catz has reached out to me and is adamant that the 3000 Hz is indeed real. Looking at the interval plots then removes any remaining doubt: Furthermore, bInterval is listed as "0x01," which indicates a polling interval of 1 ms (1000 Hz) instead of 0.5 ms (2000 Hz) or 0.33 ms (3000 Hz). Pro X3 Supreme is detected as a full-speed device, which already calls into question the ability to deliver actual 2000 Hz polling. Now, the question is: Does it work? The short answer is no. That said, I have no idea why the polling rate has an effect on actual CPI.Ģ0 Hz USB Polling: Does It work?Mad Catz promises a USB polling rate of 2000 Hz on the R.A.T. It seems as though the steps were specifically tuned for polling rates higher than 1000 Hz. Using 2000 Hz or 3000 Hz, CPI ends up considerably lower, thus resulting in less deviation. Also note that testing has been performed at a polling rate of 1000 Hz. Using the PTFE feet, the deviation is even greater. Please note that those measurement have been done using the ceramic feet installed by default. In order to account for the measured deviation, adjusted and mostly accurate steps of 350, 700, 1400, and 2800 CPI have been used for testing. As you can see, deviation is massive and exclusively positive. I've restricted my testing to the four most common CPI steps, which are 400, 800, 1600, and 3200.Mad catz rat 7 control panel manual#