TVT-322 AC Single-Pointer Dual-Pointer Millivolt Meter High-Accuracy Dual-Channel Voltmeter 50Hz/60Hz

Parameters:
Model: TVT-322
Measurement Range
Voltage: 300μV–100V
dB: -70 dB to +40 dB
dBm: -80 to 52 dBm (0 dB = 1 Vrms, 0 dBm = 0.755 V)
Full-Scale Error: <3% at 1 kHz level
Frequency Response:
5Hz~1MHz: +10%
10Hz~500kHz: +5%
20Hz~200kHz: +3%
30Hz~100kHz: +2%
1kHz Level
Input Impedance:
10 MΩ ±5%, 45pF
Maximum Input Voltage: 500V (DC+AC): 3V-100V range; 300V (DC+AC): 300μV-1V range
Stability: ±5% of full scale
Residual Voltage: <200pV at 1mV level, short-circuit output
Gain: 60dB
Output Voltage: 0.1Vms+20% of full scale (no load)
Output resistance: 600Ω ±20% at 1kHz level
Distortion: <1% at full scale
Signal-to-noise ratio: >30dB within 0.3mV range
Frequency response: 5Hz ~500kHz: ±<3%
Rated operating temperature/humidity: 10°C~40°C/85% RH
Power supply: 220V/110V ±10%, 50Hz/60Hz
Dimensions: 239 x 140 x 200 mm
Weight: 3 kg