Time Electronics 1044 DC Voltage & Current Calibrator - Manual (Page 10)

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V1.1 09/01/11 P a g e | 10 1044 Technical Manual
5.
B attery R eplacement
Battery life is primarily dependent on the output currents drawn. With low output currents,
battery life can exceed 50 hours, but with high currents battery life may be reduced to less
than 5 hours. If a short battery life is experienced, rechargeable batteries may be used but
the battery must be charged externally.
Battery replacement is by sliding the rear panel up to its stopping point revealing the battery
compartment (see page 12 for diagram). The battery may now be replaced. Only use high
quality PP3, 6AM6, MN1604 or 6LR61 batteries that will not leak.
An optional mains power supply Time Electronics order code 7643 may be used to power
the instrument via the 2.5mm jack socket at the end of the instrument. This will cut out the
internal battery and power the 1044. Note that the tip of the 2.5mm jack plug should be
positive. The 1044 is protected against reverse polarity and will not function in this state.
If an external power supply other than the above is used it must be 12V supply and up to
200mA capability.