Operating Precautions
7
• Use only the specified test leads and cables. Using a non-specified cable may
result in incorrect measurements due to poor connection or other reasons.
• To ensure certified measurement accuracy, allow at least 30 minutes warm-
up. After warm-up, be sure to execute self-calibration.
See "4.10 Self-Calibration" (p.73).
• The input circuitry includes a protective fuse. Measurement is not possible
when the fuse is blown.
• This instrument internally stores (backs up) all settings (except memory func-
tion and measurement values), such as measurement range, comparator
settings and etc., but only when no operation is performed for a certain time.
Therefore, to preserve settings, do not turn the power off for a short time
(about five seconds) after changing a setting. However, measurement set-
tings made through the RS-232C, LAN, or GP-IB interface and measurement
settings loaded by LOAD
signals of the EXT I/O connector are not memo-
rized.
• Select an appropriate measurement range when measuring batteries. Using
a low range such as 3 m to measure a button cell or other battery that has
high internal resistance may result in an open-terminal voltage (approx. 4
V), causing the battery to be charged.
Before Connecting and Powering On
• Before turning the instrument on, make sure the supply voltage matches that
indicated on the its power connector. Connection to an improper supply volt-
age may damage the instrument and present an electrical hazard.
• To avoid electrical accidents and to maintain the safety specifications of this
instrument, connect the power cord provided only to a 3-contact (two-con-
ductor + ground) outlet.
To suppress noise, the instrument needs to be set to match the frequency of
the power source. Before operating, set the instrument to the frequency of your
commercial power. If the supply frequency is not set properly, measurements
will be unstable.
See "2.5 Selecting the Line Frequency" (p.24).
Make sure the power is turned off before connecting or disconnecting the
power cord.
Handling the Instrument
• To avoid damage to the instrument, protect it from physical shock when
transporting and handling. Be especially careful to avoid physical shock from
dropping.
• Do not apply heavy downward pressure with the stand extended. The stand
could be damaged.
This instrument may cause interference if used in residential areas. Such use
must be avoided unless the user takes special measures to reduce electro-
magnetic emissions to prevent interference to the reception of radio and televi-
sion broadcasts.
To Next Page
Loading...
Need help?
General
