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Oscar 250

Oscillator and auto-ranging dB meter suitable for any use involving the distribution or broadcasting of audio level signals
Can be used for fault location and lining up of data/speech networks
Independent operation
Calibration in dBM
True r.m.s. reading
+10 to -50dB range
Provides a d.c. patch for control signals and line hold in telecom applications
Built-in switchable 600Ω termination
Switchable tone source built-in