Testboy TB 312, Operating Instructions Manual, Page: 39 / 219

Operation
Testboy
®
TB 312 39
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AC voltage measurement / V~
Set the appropriate range (mV or V~) using the selector switch. Press the SELECT but-
ton to set to AC. C
onnect the black test lead to the “COM” jack and the red test lead to
the red V / mV /
Ω jack. Connect test leads to the test specimen. Read off measure-
ment result from the display.
AC voltage
Measuring
range
Resolution
Accuracy
40 Hz
– 1 kHz
1 kHz
– 10 kHz
10 kHz
– 20 kHz
50 mV 0.001 mV
± 0.5 % of
meas. val.
+ 40 digits
± 1 % of
meas. val.
+ 40 digits
± 2.5 % of
meas. val.
+ 40 digits
500 mV 0.01 mV
5 V 0.1 mV
50 V 1 mV
500 V 10 mV
not specified
1000 V 0.1 V
not specified not specified
Accuracy specified only valid for 10 % to 100 % of the measuring range.
-Input resistance: 10 M
Ω.
-Max. input voltage: 1000 V AC RMS, frequency range: 40 Hz- 20 kHz.
Press the SELECT button to switch between the AC and dBm measuring range.