TVT-322 Dual Channel Milivoltmeter Double Needle Millivoltmeter New Design High Quality Pointer voltage measuring instruments
Features:
--Dual needle, totally and tracing size
--Frequency: 5Hz--1MHz
--AC Voltage: 300uV--100V, Max (DC+AC300V)
--dB measurement:-70dB--+40dB
--3600 revolving switch
--10Mohm input impedance
--Internal grounding
--Observation of internal output
Specifications:
Measuring differ
Voltage:300µV-100V in 12 steps
dB:-70dB to +40dB
dBm:-80 to +52dBm (0dB=1Vrms, 0dBm=0)
Measuring mode
traceable
Error
Within 3% at 1KHz, full scale
Frequency reaction
5Hz~1MHz:±10%
10Hz~500KHz::±5%
20Hz~200KHz::±3%
30Hz~100KHz::±2%
Readout at 1KHz as reference
Input impedance
10Mohm:±5%, 45pF
Max input voltage
500V(DC+AC peak) (within in 3V-100V)
300V(DC+AC peak)( within 300µV-1V)
Stability
±5% of complete scale, at 10% style of line voltage
Survival voltage
Less than 200µV at 1mV differ and short-circuit of input
Cross-talk
Independent lower than 80dB connecting 600ohm load
Consistent:less than 50dB connecting 600ohm load
Gain
60dB
Output voltage
0±20% ai full scale with out load
Output resistance
600ohm±20% at 1KHz
Distortion
Less than 1% at complete scale
Signal to noise ratio
More than 30dB at 0 range
Frequency reaction
5Hz~500KHz: within ±3%
ambient
10C~40C85% RH
Power supply
220V/110V±10% 50Hz/60Hz
Dimension
239*140*200mm
weight
About 3Kg