Identify noise in communication and power lines

Non-contact type voltage sensor
Frequency range measurement between 500 Hz and 30 MHz
Display of level meter using a large LCD
Long-term monitoring by using the logging function

3144-20 Specifications
Input unit configuration 9741 dedicated input terminal, BNC input terminal
( 9741 takes priority)
Measurement range × 1 range 0 dBV( 1V) f.s. ( 0 dBV to -30 dBV)
× 10 range -20 dBV( 0.1V) f.s. ( -20 dBV to -50 dBV)
Frequency range band 500 Hz to 30 MHz, separated into 7 ranges ( -3 dB range)
Detection method RMS value conversion
Detection precision 500 Hz to 1 MHz or less ± 1.5 dBV
1 MHz to 30 MHz ± 2.0 dBV
Monitoring function Display of measurement voltage level of each frequency range in levels on LCD ( 2.5 dBV/ SEG equivalent)
Logging function Measurement data and time saved to internal memory according to specified recording interval
Recording interval 1/ 2/ 5/ 10/ 20/ 30 seconds, 1/ 2/ 5/ 10/ 20/ 30/ 60 minutes
Output function Waveform monitoring : Output of input singnal coming from 9741 dedicated input or BNC input
Audible range monitoring : Output of detection signal envelope Monitoring wiht supplied earphone possible
Power supply AA alkaline( LR6) batteries × 6, Continuous use 5 hours, included AC Adapter
Dimensions, mass 98 mm ( 3.86 in) W × 179 mm ( 7.05 in) H × 46 mm ( 1.81 in) D, 430 g ( 15.2 oz)
Accessories CLAMP ON VOLTAGE SENSOR 9741 ( 1) , AC adapter 9445-02 ( UL) or AC adapter 9445-03 ( CEE) ( 1) , Carrying case( 1) , PC application software CD-R( 1) , USB cable( 1) , strap( 1) , earphone( 1) , AA alkaline( LR6) batteries( 6)