TEK MDO3024

[Jakethepython]

I have a TEK MDO3024  4 channel 200 MHz. Channel 4 seems to read incorrectly. The first 3 channels read the 2.5 V and channel 4 reads 2V and has ringing at the beginning and end of the signal. I am using the TPP0250 probes. If i switch the probes around or use a standard probe it shows the same issue. I am wondering if this sounds like an input hardware issue or if there is a calibration issue within the scope. Attached is a picture of CH1 and CH4 with the same input signal.