Tektronix Current probe DC Drift

[gogoman]

Hello I came across a TCP00030 Current probe.  The probe  has a DC drift of about 70mV, until it warns up. Once warned up it settles within several mV of  the bassline of zero. Is the drift cause by a defective hall effect sensor,  down stream electronic or a mechanical part in the handle?
Any suggestions  where to start.

thanks

[Hamelec]

nothing at all.
But see instruction manual:
"Quick Tip:
To maintain measurement accuracy, degauss your probe in each of these cases:
After you turn on the measurement system and allow a 20-minute warm-up period"

[gogoman]

An identical TCP drift 1-2mA at power up after which it locks on to the baseline settings. Which leads me to believe the drifty one has a problem .

thanks