DVM903
V. 02 – 29/01/2020 16 ©Velleman nv
10.10 DATA HOLD
In any range, press HOLD to lock the display value. The DH sign will appear
on the display. Press again to exit.
10.11 MAX/MIN HOLD
Press MAX/MIN to lock the min or max value. Keep pressed for 2 seconds to
unlock.
10.12 RELATIVE MEASUREMENT
Press REL to measure the relative value. The auto range mode can be
changed to manual. Press it again to exit. This function is non effective on
the Hz/% measurement.
11. Battery and Fuse Replacement
WARNING: To avoid electrical shock always disconnect the test
leads prior to opening the housing. To prevent fire hazards, only
use fuses with the same ratings as specified in this manual.
Remark: refer to the warning on the battery compartment
There are no user-serviceable parts inside the device.
Refer to an authorized dealer for service and/or spare parts.
Disconnect the test leads from the test points and remove the test
leads from the measuring terminals before replacing the batteries
or fuses.
• When" " is displayed, the battery should be replaced.
• Fuses rarely need replacement and blown fuses almost always result
from human error.
To replace the battery:
• Switch off the meter.
• Remove the screw at the back of the case and gently open the housing.
• Remove the old battery and insert a new one.
• Close the housing and fasten the screw.
Battery: 1 x 3.7 V, make sure to respect the polarity
Fuses: F0.8 A/1000 V, 6.75 x 33 mm, F15 A/1000 V, 6.75 x 33 mm
Make sure the meter is closed tight and put the protective edge back in
place before using the meter.
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