Dual Pointer Millivolt Meter – High Accuracy Dual Channel Voltmeter for Lab
Model: TVT-322
Measurement Range
Voltage: 300 μV–100 V
dB: -70 dB to +40 dB
dBm: -80 to 52 dBm (0 dB = 1 Vrms, 0 dBm = 0.755 V)
Measurement Error: <3% of full scale (at 1 kHz)
Frequency Response
5 Hz ~ 1 MHz: ±10%
10 Hz ~ 500 kHz: ±5%
20 Hz ~ 200 kHz: ±3%
30 Hz ~ 100 kHz: ±2% (1 kHz resolution)
5 Hz ~ 500 kHz: ±3%
Input Impedance: 10 MΩ ±5%, 45 pF
Maximum Input Voltage
3 V — 100 V range: 500 V (DC + AC)
300 μV — 1 V range: 300 V (DC + AC)
Stability: ±5% of full scale
Residual Voltage: Less than 200 μV (1 mV resolution, short-circuited output)
Gain: 60 dB
Output voltage: 0.1 Vms ±20% of full scale (no-load)
Output resistance: 600 Ω ±20% (1 kHz level)
Distortion: Less than 1% of full scale
Signal-to-Noise Ratio: Greater than 30 dB within the 0.3 mV range
Rated Operating Temperature and Humidity: 10°C to 40°C / 85% RH (Note: The value of 100°C listed in the table has been corrected as a typographical error)
Power Supply: 220 V/110 V ±10%, 50 Hz/60 Hz
Dimensions: 239 × 140 × 200 mm
Net Weight: 3 kg