Scope / Multimeter
Operation and Controls
17
3.8.1 Test Lead / Probe Connection
Standard “safety type” test lead jacks are located on the top of the diagnostic tool,
and are compatible with many test leads and probes. Insert the applicable test lead
or probe terminal end into the jack to compete the connection.
IMPORTANT
To avoid damaging test leads, do not pull on the wire when removing the
leads from their jacks. Pull only on the lead terminal end.
1— Ground Jack (Black)
2— Channel 1 Jack (Yellow)
3— Channel 2 Jack (Green)
Figure 3-11
Typical - Scope Multimeter Test Lead Jacks
3.8.2 Test Lead / Probe Calibration
Certain tests may display a confirmation prompt asking “Do you wish to calibrate
this probe?” before continuing with the test. As general practice, it is important to
ensure the test probe is calibrated before testing, to ensure accurate results.
Typical resistance, pressure, and vacuum tests will display the calibration
message, reminding you to calibrate the probe. To perform the probe calibration,
select
Yes
at the prompt and continue to follow the onscreen instructions to
complete the calibration.
Example:
For the ohms (resistance) calibration process, once completed, zero
ohms should be displayed when the leads are connected together. When the
leads are separated, the upward arrows on the display indicate infinite resistance
or an open circuit.
NOTE
During an ohms test or a pressure test, a manual probe recalibration can be
initiated by selecting the probe icon from the Control Panel to open the probe
menu. Then select either the Ohms or Pressure (100, 500, 5000) items from
the probe menu. The menu selections will display a graphic of a balance scale
with an “X” through it (on right side) to indicate that probe is not calibrated.
Figure 3-12
Probe menu - Ohms with “not calibrated” indicator displayed
3.8.3 Control Panel and Settings
The control panel is common to all three Scope Multimeter functions, and contains
the channel (or “trace”) settings and controls that are used to monitor and adjust the
signal being measured. This section provides a general overview of all the channel
settings and control features used across all three Scope Multimeter functions.
NOTE
This section is intended as a general overview of the channel settings. Not all
the settings or controls described in this section are applicable with all
functions, some may be “grayed out” or not active (applicable) depending on
the function or test. Function availability is noted as applicable.
1
2
3
GND
1
2
+Ω-
50V ~/75- MAX
!
