Time Electronics 1048 Voltage-Current-Loop Calibrator - Manual (Page 14)

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V1.2 30/12/10 P a g e | 14 1048 Technical Manual
6.
P ower S upplies
6.1. Auto-power down
If the unit is not used for 15 minutes, it will automatically power down to conserve the battery
life. This feature can be disabled by holding down the INC button whilst switching on the
unit.
6.2. Battery Life
The unit is powered by a PP3 (Alkaline) battery that lasts approximately 15 hours of normal
operation. Continuous operation on current will shorten the battery life. The unit will indicate
‘Low Battery’ when the battery needs changing. A short period of operation is possible when
‘Low Battery’ is showing but no more than a few mA will be available at the output.
6.3. Battery Replacement
Slide off the back cover of the case and remove
the battery from its compartment. Unclip the
battery and replace it with a new PP3 (Alkaline).
The NiCad / NiMH rechargeable version of this
battery may be used. However it should be
noted that if the optional mains power supply
adapter (see below) is used to power the unit,
the battery will not be re-charged. It is
necessary to remove the battery and re-charge
it externally.
6.4. Mains Power Supply Adapter
The unit can be operated from an external 12V dc
(100 mA) mains power supply unit. This is available
as an optional extra. Connection is via the small
jack plug socket on the terminal end of the unit.
6.5. Fuse Replacement
The unit is fitted with a F100 mA fuse. Switch off the unit and disconnect the battery. Slide
off the back cover to access the fuse. The fuse is located adjacent to the battery. Fuse
length 20mm x 5mm, TE code: 6107.