Electrical measuring and control instruments for electric circuits and networks

3804001 Local area network (LAN) test systems
3804002 Analysers, network
3804004 Phase fault monitors
3804005 Analysers, mains sequential harmonic
3804007 Voltage conditioners, AC, power line
3804008 Analysers, transfer function
3804012 Underground cable locators
3804013 Frequency synthesizers
3804014 Standing wave ratio measuring instruments
3804015 Spectrum generators, random
3804018 Impedance meters
3804021 Fault indication equipment, electric circuit, portable
3804022 Fault location equipment for underground electric cables
3804028 Transmitter monitors
3804029 Transmitter output meters
3804031 Test equipment for electromagnetic susceptibility
3804034 Acoustic shock suppressors