1/4″ 7.5 IPS MRL IEC1 (250 nwb) Four Frequency Calibration Tape
The Equalization is IEC (IEC1). The tape is 1/4″ on a 7″ plastic reel. The tape is 4 minutes long, with 1 minute for each frequency. This tape will be at +3db (250 nWb/m). The four frequencies of the tape are 1kHz, 10kHz, 16kHz and 50Hz.
