Originally published at: HP Hewlett Packard Keysight Agilent 34401A Digital Multimeter, 6 ½ Digit 6.5 - HPLC.vn
![](https://cds.chemvn.org/original/3X/e/0/e0f6b96fc8fb5562abe83b0010424faab01ca0fc.jpeg)
Basic checks such as DCV, resistance, frequency, etc. showed no problems with the function. Also, switching and input on the rear panel were normal.
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