A digital combo set.
Available in four modifications.
 
A digital combo set for maintenance and repair of carrier channels and data transmission equipment of information structures.
 
Functions
    Sine-wave generator
    Broadband rms voltmeter
    Narrowband (selective) rms voltmeter
    Frequency meter
    Waveform monitor
    Spectrum analyzer
 
Measured parameters
    measurement of root-mean-square AC voltage and frequency of single-ended or differential signals
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