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DC Output
Output voltage: 10mv±0.1mv/dB (e.g. 94dB = 0.94V)
Output impedance: 1kΩ
Load impedance: ≥1MΩ
2.8 External Power
The eS528L sound level meter can be powered by an external 9V
DC supply or via its Micro USB port. The power jack for the
external 9V supply is located on the right side of the unit, below the
Micro USB port. When the meter is powered by an externa supply,
the internal battery is automatically disconnected. Please make sure
that the polarity is correct when connecting an external 9V DC
power supply, otherwise the meter and/or external power supply
may be damaged.
DC 9V
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