Pearson  8240 电流监测器
型号：8240
Sensitivity 2.0 V/A ±1%
Output resistance 50 
Maximum peak current 500 A
Useable rise time 12 ns (approximate)
Low frequency 3dB point 100 kHz (approximate)
High frequency 3dB point 30 MHz (approximate)
Output connector BNC (UG-290A/U)
Operating temperature 0 to 65 oC
Weight 3.7 pounds (1.7 kg)