Functions And Display Definitions - Actron AutoTroubleShooter Operating Instructions Manual

Functions and Display Definitions

1. ROTARY SWITCH
Switch is rotated to select a function.
2. DC VOLTS
This function is used for measuring DC
(Direct Current) Voltages in the range
of 0 to 600V.
3. OHMS
This function is used for measuring the
resistance of a component in an elec-
trical circuit in the range of 0.1Ω to
20MΩ. (Ω is the electrical symbol for
Ohms)
4. DIODE CHECK / CONTINUITY TESTS
This function is used to check whether a
diode is good or bad. It is also used for
fast continuity checks of wires and termi-
nals. An audible tone will sound if a wire
and terminal are good.
5. HOLD
To freeze the reading on the LCD
display, short press the HOLD button.
The "H" symbol will appear on the
LCD display. Short press the HOLD
button again to return to normal
operation. The HOLD value will be lost
if the position of the meter dial is
changed or the meter is turned off.
6. TEST LEAD JACKS
BLACK Test Lead is al-
ways inserted in the COM
jack.
RED Test Lead is in-
serted in the jack corre-
sponding to the multim-
eter rotary switch setting.
DC AMPS
Always connect TEST LEADS to the mul-
timeter before connecting them to the
circuit under test!!
7. AC VOLTS
This function is used for measuring AC
Voltages in the range of 0 to 600V.
RPM
DC VOLTS
DWELL
AC VOLTS
OHMS DIODES
CONTINUITY
8. DC AMPS
This function is used for measuring DC
(Direct Current) Amps in the range of 0
to 10A.
9. DWELL
This function is used for measuring
DWELL on distributor ignition systems,
and solenoids.
10. TACH
This function is used for measuring
engine speed (RPM).
11. ON/OFF
Press to turn power ON. Press again to
turn power OFF.
12. DISPLAY
Used to display all measurements and
multimeter information.
Low Battery – If this symbol appears
in the lower left corner of the display,
OL
OL
disappear after all the ranges for a
particular function have been tried, then
the value being measured is too large for
the multimeter to measure. (See Setting
the Range on page 6.)
Zero Adjustment
The multimeter will automatically zero on
the Volts, Amps and RPM functions.
Automatic Polarity Sensing
The multimeter display will show a minus (-)
sign on the DC Volts and DC Amps functions
when test lead hook-up is reversed.
APO Function
The meter will beep 5 times after 14 minutes
of inactivity to prompt user that the meter is
approaching Auto Power Off. The meter will
beep once and then turn off after 15 minutes
of inactivity. Anytime you change the meter
dial position or press the HOLD button, the
APO timer is reset to 15 minutes.
6
then replace the inter-
nal 9V battery. (See
Fuse and Battery re-
placement on page 7.)
Overrange Indication
– If "OL" or "-OL"
appears on the left
side of the display,
then the multi-meter is
set to a range that is
too small for
present measurement
being taken. Increase
the range until this dis-
appears. If it does not
the