Automatic Switch-Off - TESTBOY TB 4000 Bedienungsanleitung

Operation
Capacitance measurement / F
Set the selector switch to "
with the "COM" jack and the red test lead with the "V/Ω" jack. Connect the test leads with the
test object and read off the measurement result from the display.
Measurement range
60 nF
600 nF
6 µF
60 µF
600 µF
6 mF
60 mF
Discharge the capacitors before every measurement.

Automatic switch-off

The instrument switches off after approx. 15 minutes (APO). Pressing and holding down the
"APO" button switches the Auto Power Off function on or off.
Backlighting
Pressing and holding down the "HOLD" button switches on the backlighting.
The illumination switches off automatically after approx. 1 minute.
Save function (HOLD)
In difficult measurement positions, it may not be possible to read the display correctly.
Pressing the "HOLD" button freezes the real reading, which can then be read off when convenient.
Pressing the "HOLD" button again returns the instrument to normal measuring mode.
True RMS
When using the True RMS function to measure non-sinus wave forms, small measurement er-
rors can occur compared with conventional measurement procedures.
Sinus-form and non-sinus form signals can be accurately measured using the True RMS function.
24
/ ". Press the "SEL" button x 3. Connect the black test lead
Resolution
10 pF
100 pF
1 nF
10 nF
100 nF
1 µF
10 µF
Accuracy
± 4 % + 3 digits
®
Testboy TB 4000