9-50G2 A
 a SINAD meter consists of a multi-range audio frequency voltmeter:
A. Calibrated in decibels with a sharp internal 1000 Hz bandstop filter. 
B. Calibrated in millivolts with a medium 1000 Hz bandpass filter.
C. Calibrated in decibels with an internal 1000 Hz highpass filter. 
D. Calibrated in decibels with an internal 1000 Hz lowpass filter. 
