Magnetic Reference Lab 41J226 1" Multifrequency Calibration Alignment Tape for Open Reel Applications (15"/s, 250 nWb/M)

This multifrequency calibration tape from MRL contains a series of recorded sine-wave signals for general-purpose use for standardizing azimuth, equalization, and sensitivity (usually called "gain" or "level") of open-reel analog audio magnetic tape reproducers. It is not intended for testing tape reproducer speed, flutter, distortion, or track placement.

The signals on this tape can be monitored with a voltmeter - either the program level meter in the tape reproducer or an external voltmeter. Useful auxiliary test equipment includes a loudspeaker or headphones to hear the voice announcements of frequencies and levels, an oscilloscope to observe waveforms, and a level recorder in order to provide a graph of the frequency response.

MRL 41J226 Multifrequency Calibration Tape Specifications:

• Tape Width: 1" (25 mm)
• Playing Time: 10 minutes
• Tape Speed: 15"/s (380 mm/s)
• Equalization Standard: IEC (IEC1)
• Fringing Compensated for narrow-track systems
• Level of Frequency Response Section: 0 dB
• Catalog Number for Reference Fluxivity (250 nWb/M): 41J226