Frequency; Duty Cycle; Relative Value Measurement - TESTBOY TB 312 Bedienungsanleitung

Operation

Frequency

Set the selector switch to "Hz". Connect the black test lead to the "COM" jack and the
red test lead to the V / mV / Ω jack. Connect test leads to the test circuit. Read off
measurement result from the display.
Measuring range
Logic frequency (2.5 ~ 5 Vp)
5 Hz ~ 2 MHz
Linear frequency (500 mV ~ 1000 V, only in the AC measuring range!)
5 Hz ~ 60 kHz
- Input impedance: 3 kΩ

Duty cycle

Set the selector switch to "Hz". Press the SELECT button to switch to the duty cycle
measurement range. Connect the black test lead to the "COM" jack and the red test
lead to the V / mV / Ω jack. Connect test leads to the test circuit. Read off measurement
result from the display.
Measuring range
Duty cycle (2.5 ~ 5 Vp at 5 Hz ~ 60 kHz)
5 % ~ 95 %
- Input impedance: 3 kΩ

Relative value measurement

Press the "REL" button to enable the relative value measurement method. Pressing the
button retains the last measured or displayed value and deducts the subsequent value.
The "REL" button can also be used to compensate for test lead resistance.
44
Resolution
0.001 Hz
0.001 Hz
Resolution
0.01 %
Accuracy
± 0.006 % + 4 digits
± 0.006 % + 4 digits
Accuracy
± 2 % + 5 digits
®
Testboy TB 312