Device Functions; Mode 1: Main Mode; A: Measurement Of Voltage And Earth; B: Trouble Shooting Of Electrical Components - Berner 186414 Instrucciones De Uso

5. device functions

6.1 Mode 1:

A: Measurement of voltage and earth

1. If the measurement tip makes contact with a component connected to the on-board power supply,
the device recognises whether it is D.C. voltage, pulsed voltage or a earth connection.
2. If it is dC voltage, the display lighting changes to red and the current value is displayed.
3. It this is a cycled voltage, (P) is shown on the display.
• If their maximum value is outside of the threshold value set in mode 5,
the differential between the maximum and the minimum value is displayed.
Example: Maximum value: 12 V, minimum value 4 V, Display 8.0. In addition,
a signal tone can be heard which depends on the frequency, which
becomes softer with increasing frequency.
• If their maximum value is under the threshold value set in mode 5,
the average value between the maximum and the minimum value
is displayed. A signal tone cannot be heard.
Example: Maximum value: 8 V, minimum value: 0 V, display 4.0
*
iMportANt:
if the frequency of the cycled voltage is very small (< 5 hz), this can no longer be clearly
detected by the device and the display switches back and forth between Dc and pulse voltage.
4. If this is an earthing connection, the machine determines its transition resistance to the battery
earthing in 3 stages:
- Display lighting green and display (0.0):
- Display lighting white and display (0.0):
- Display lighting white without display:
This method can also be used to determine the resistance also with the throughput test (cf. C).
B: Troubleshooting electrical of components
*
iMportANt:
the component to be tested (e.g. light or windshield wiper) is to be activated.
1. Make contact with both supply connections on the component with the test tip. If there is voltage
(+) on one side and earth on the other and the component still does not work, it is very probable
it is defective.
2. If there is current on both sides (+), the earth connection to the component is interrupted.
3. If there is earth on both sides, the on-board voltage connection to the component has been
interrupted.
4. In both of these cases, using the current diagram and the Power Probe (see also A 1 and 2), you
12
Main mode
Earth connection ok
Increased transition resistance
Transitional resistance too high