THM420 Specifications
4
Handheld and Benchtop Instruments Basic Service
Table 2: Measurement Characteristics (Cont.)
Characteristic Description
Accuracy (By range)
100 Hz, 1 kHz, 10 kHz, 100 kHz ±(0.1% of reading + 4 counts)
1 MHz ±(0.5% of reading + 4 counts)
Sensitivity
100 Hz, 1 kHz, 10 kHz 40 mV
RMS
100 kHz, 1 MHz 400 mV
RMS
Lowest Measurable Frequency 10 Hz
Continuity
Threshold Beeper sounds when resistance is approximately 30 W or less
Diode Test
Test Current 1.0 mA
Test Voltage 5 V maximum
Table 3: Waveform Display Characteristics
Characteristic Description
Display Region 8 Horizontal divisions and 4 vertical divisions (16 dots/division)
Vertical
Voltage Input Bandwidth
20 mV to 1 V/div DC to 5 MHz
2 V to 200 V/div DC to 3 MHz
Current Inputs Rise Time Limits
400 mA Connector >500 ns
8 A Connector >5 ms
Voltage Ranges 20 mV/div to 200 V/div
Current Ranges
mA 2 to 500 mA/div
A 200 mA/div to 10 A/div
Sample Rate 16 MS/s
Resolution 6 bits
Coupling DC and AC (–3 dB at 15 Hz)
Input Impedance 1 MW
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