DMM测量电阻负值问题

嗨......我正在使用34980A内部数字万用表...我遇到了DMM测量电阻负值的问题，任何人都遇到过此问题，任何可能的解决方案？
（DMM尚未到期校准）我们尝试启用自动归零仍然会得到负面读数...谢谢



     以下为原文

  Hi...

I am using 34980A internal DMM...
I encounter an issue with DMM measuring negative value on resistance, anybody have encountered this, any possible solution? (DMM still not yet due for calibration)
We tried enable auto zero ON still getting negative reading...

Thanks