USER'S MANUAL (1.5MB). □HDM-3200. SPECIFICATION (Coming soon). USER'S MANUAL (1.5MB). □HDM-4000. SPECIFICATION (280KB) · USER'S MANUAL (1.2MB). □HDM-4400.The meter can be used for measuring DC voltage, AC voltage, resistance, diode and batteries. Use the meter strictly according to the provisions of this manual. Read these operating instructions thoroughly and completely before oper- ating your DMM. Pay particular attention to WARNINGS and CAUTIONS, which will inform It is recommended that you read and understand this instruction manual thoroughly prior to using the meter. Failure to understand these instructions and to International symbols used on the Meter and in this manual are explained in chapter 1.1.3. Precautions safety measures. 1.1.1 Preliminary.