XITRON 2000I, User Manual

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72
2000I & 2000M User Guide, Rev B
24. No further calibration steps are required. The instrument will now store
the calibration factors obtained during this procedure and then select the
“Standby”
state with the power on default output level.
Note:
Laboratory standard resistors are not normally the exact nominal
value. The actual measured voltage drop used for each DC current calibration
step will require adjustment for the actual value of the resistor.
V
MEASURED
= I
REQUIRED
* R
ACTUAL
Periodic Maintenance
The 2000I and 2000M DC power source instruments require little periodic
maintenance; however, Xitron Technologies makes the following
recommendations:
1. Allow the internal battery to fully discharge, and then fully recharge at
least once a year. This will ensure that the battery retains its storage
capacity.
2. Clean the external surfaces of the chassis with a soft damp cloth. Do not
clean the front panel with Freon based cleaning solutions. Take care that
moisture does not enter the chassis during cleaning. If the external
surfaces become excessively dirty or damaged, contact Xitron
Technologies Customer Service (or one of its agents) for details on how
to rectify this situation.
3. If the instrument is to be stored for extended periods of time, fully charge
before storing. This will ensure that the battery will accept a full charge
when removed from storage.
Internal Maintenance
In general, the 2000I and 2000M DC power source instruments do not require
internal maintenance. In the event of a failure, a calibration fault, or when the
internal battery requires replacement, however, the instrument may require
opening.
Important Note: The information provided here allows you to replace the
battery. If you wish to perform detailed fault finding within this instrument,
obtain the MS2000 option from Xitron Technologies Inc.