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Differential voltage probe - LB-DP9030-Z

The LB-DP9030-Z is an important accessory for any laboratory involved in power electronics. It allows isolated and floating measurements with any oscilloscope - and the oscilloscope can remain grounded. Using a LB-DP9030-Z probe, differential and floating measurements can be made on a variety of ac power systems like 230V/110V ac input power supplies, chopped and switching power supplies, thyristor controllers, variable speed motor drives (PWM signals), motor inrush current and measurement across current shunts. The isolated input is made via two 4mm/banana safety sockets. The BNC output allows easy connection to an oscilloscope. The LB-DP9030-Z is powered from a 9V battery.
  • 2 attenuation ratios: 1/20 and 1/200 (1000Vpk)
  • Safe low voltage output ±3.0V for display on a standard oscilloscope
  • Differential input impedance 2Mohm / 6pF
  • Output impedance 1Mohm
  • Electrical safety in compliance with IEC 61010-1 Cat.IV - 600V
  • Power supply: 9V battery operated for added isolation & safety
  • Complete with case, 2 x safety type cables, 2 x crocdile clips, 1 x insulated BNC-BNC cable, 9V battery, user manual
LB-DP9030-Z general specifications
Bandwidth DC to 30MHz (-3dB)
Accuracy ±3%
Maximum input 1000Vpk max differential
600V / CAT IV max voltage any input terminal to ground
Differential input impedance 2Mohm / 6pF
Output voltage ±3.0V
Output impedance 1Mohm
Rise time 11.7nS
Noise <2mV, <4mV x 20
Common mode rejection 50Hz >80dB  1MHz >50dB
Power supply 9V battery - typical period of operation 18 hours
Electrical safety IEC 61010-1, double insulation to CAT IV, degree of pollution 2 - assigned 600V
CE marking In conformity with EN50081-1 and EN50082-1
Dimensions 163 x 62 x 40mm  250g
 
Attenuation x 200   x 20
Range of input voltage 600Vpk 60Vpk

Vertical deviation on the oscilloscope in V/div

Real deviation in V/div

1 200   20
0.5 100 10
0.2 40 4
0.1 20 2
50m 10 1
20m 4 0.4
10m 2 0.2
5m 1 0.1
2m 0.4 40m
The real vertical deviation in V/div is equal to the attenuation factor multiplied by the vertical deflection range selected on the oscilloscope