Measurements; Oscilloscope; Performing Oscilloscope Measurements - Hella Gutmann mega macs 77 Schnellstartanleitung

mega macs 77

8 Measurements

EN
Here you can select measured variables and channel. Then you can perform various measurements.
Measurement technology involves digital signal acquisition and output. A voltage signal is scanned and stored at
intervals of a few microseconds. Once there are enough values stored, the scans are displayed as a signal curve on-
screen.
Perform measurements either independently under >Oscilloscope< or with a step-by-step description under >Guided
measurements<.
8.1

Oscilloscope

The oscilloscope can be used for measuring and/or depicting the following measured variables:
• Voltage
• Current
• Resistance
• Temperature
• Pressure
Current measurements are allowed exclusively using the clamp meter from Hella Gutmann. Depending on the
required measurement, different meters are to be used.
Temperature measurements require the Hella Gutmann infrared thermometer.
Pressure measurements require the Low Pressure Diagnostic Kit (LPD kit) of Hella Gutmann.
A light blue bar in the top toolbar indicates how much of the memory space reserved for this purpose in the Car
History has been used. If the blue bar is complete, the oldest data is deleted from the Car History memory and the free
memory is assigned new data.

8.1.1 Performing Oscilloscope Measurements

Proceed as follows to perform oscilloscope measurements:
1. Insert the test lead into the MT 77 and connect it to the relevant component.
2. Select >Measurements< in the main menu.
3. Select the >Oscilloscope< tab.
4. Activate the check box for the desired measured variable and the oscilloscope channel.
5. Confirm the selection with
Measurement will be started.
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NOTE
The use of the measurements menu requires the optionally available measurement module (MT
77).
CAUTION
Overvoltage
Fire hazard/danger of destruction of the device and its surroundings
Comply with the max. permitted voltage load of the oscilloscope channels:
• Direct current voltage (DC): max. 200 V
• Alternating voltage (AC): max. 160 V
.
Measurements
Oscilloscope