Description Of Function Keys; Hold Key; Pk/Rel Key; Mx/Mn Key - Tenmars TM-87 User Manual

TM-87/TM-88
4.2.

DESCRIPTION OF FUNCTION KEYS

When pressing a key, the corresponding symbol is displayed with a beep. To resume
default state turn the selector on another function.

4.2.1. HOLD key

By pressing HOLD key the measured value is frozen on the display where the symbol
"HOLD" appears. Press again HOLD to disable this function and resume normal operation.

4.2.2. PK/REL key

This key have the double function of measuring max/min peak values (active for ∼V and
∼µA positions of rotary selector) and performing relative measurements (REL) for V,
A,
Hz, Ω/ and µA positions of rotary selector.
,
,
This key have the double function of measuring max/min peak values (active for ∼V and
∼µA positions of rotary selector) and performing relative measurements (REL) for V, Hz,
Ω/
, and / positions of rotary selector.(TM-88)
,
Press cyclically PK/REL to measure and save peak values. "P " and "P " symbols on
MAX MIN
the display correspond to Maximum Peak and Minimum Peak values respectively which
are continuously updated by the meter. By keeping pressed PK/REL key for at least 3
seconds, "CAL" symbol appears on the display and the meter performs an auto calibration
permitting a higher accuracy on peak measurements.
To exit this function keep pressed PK/REL for at least one second or rotate the selector on
another position.
By pressing PK/REL key, the relative measurement is activated: the meter saves the
(offset) value on the display and the "REL" symbol is shown. The following measurement
will be referred to this offset value. By pressing again PK/REL key the offset value is
shown and the "REL" symbol is blinking.
To exit this function keep pressed PK/REL for at least one second or rotate the selector on
another position.

4.2.3. MX/MN key

By pressing MX/MN key, maximum and minimum values are measured. Both values are
stored and automatically updated as soon as an higher value (MAX) or lower value (MIN)
are measured by meter. The symbol corresponding to the desired function is displayed:
"MAX" for maximum value, "MIN" for minimum value. MX/MN key is disabled when HOLD
function is active.
To exit this function keep MX/MN key pressed for at least 1 second or rotate the selector
to another position.

4.2.4. R/SEL key

, ∼A and
By pressing R/SEL key the manual selection of measured range (exception
A positions) and the selection of a double function which are included on selector (by
choosing between Ω
measure and AC or DC Current) are possible. The "MANU"
symbol is shown at display by pressing R/SEL key and the cyclically pressure of the key
change the measuring range and fix the decimal point on the display. Press R/SEL key at
least 1second or rotate the selector to exit from this function and restore the "AUTO"
symbol at display.
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