Preparation for Use 1
Keysight 53220A/53230A User’s Guide 31
Battery operation
With Battery Option 300 installed and enabled, the 53220A/53230A counter can
be operated using battery power for up to three hours.
Removing AC power when the battery is enabled switches the counter to battery
power automatically with no interruption of operation. Similarly, there is no
interruption in the transition back to line power, provided line power is
connected before the battery is disabled.
During battery operation, the maximum measured signal supplied by the
user is ±42 V.
Also, connect the instrument chassis to earth ground during battery
operation to minimize shock hazard. Any interruption or disconnection of the
protective earth terminal will cause a potential shock hazard that could
result in personal injury.
Under battery power, the instrument chassis may float to the potential of the
measured signal supplied by the user.
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