User Manual

HT9019
EN - 7
4.2. FUNCTION KEY DESCRIPTION
4.2.1. H key
By pushing “H” key the parameter measured value is frozen on the display and the symbol
”HOLD” appears on it. This mode is disabled by pushing “H” key or moving the rotary
switch.
4.2.2.
key
Keep pressed the “H” key for the backlight activation. This light could help the operator
reading the display while he’s measuring in dark sites. For sake of battery saving after 10
seconds the light is automiatically switched off.
4.2.3. MODE key
By pushing MODE key the selection of resistance test and continuity test is possible in
 position.
4.2.4. MAX/MIN key
By pushing MAX/MIN key the parameter maximum and minimum values are measured.
Both values are stored in memory and they can be shown cyclically when pressing “MIN
MAX” key. The display shows the symbol linked to the selected function: “MAX” for
maximum value, the symbol “MIN” for minimum value.
This mode is activated on each measurement except for continuity test. This mode is
disabled keeping pressed MAX/MIN key or moving the rotary switch.
4.2.5. REL key
This key permits to perform the zeroing of value at display and a relative measurement of
the parameter under test. By pushing REL key the instrument takes the actual parameter’s
value as on offset and performs a relative measurement. The relative value is displayed,
it’s calculated as actual value – offset value, the “REL” symbol is shown at display and the
bargraph is disabled.
This mode is disabled for resistance test, continuity test and with MAX/MIN mode
activated.
This mode is disabled pressing REL key again or moving the rotary switch
4.2.6. PEAK key
By pushing PEAK key permits to activated the maximum peak measurement of AC
current (calculated with response time <10ms). The “P” symbol is shown at display and
the value is continuously updated by the meter.
This mode is disabled pressing PEAK key again or moving the rotary switch