1/4" 3.75ips Full Track Test Tape with Dolby

The RTT-2D is a 3.75ips full track master recording test tape that contains all the signals necessary to verify essential tape parameters such as Head Azimuth, Playback Level and Frequency Response to ensure that your machine is performing at its best and within factory specifications. The RTT-2D includes a 400 Hz Dolby tone recorded Dolby level and is perfect for recorders with built-in Dolby noise reduction as well as with external Dolby noise reduction units made by Teac , Sony, Panasonic, Advent, and many others.

The tape includes our exclusive Toggle Tone test signal for easy high frequency adjustment. Our high accuracy process insures consistency and conformity to NAB standards. A convenient usage tally is provided to track play back passes. Each tape is serial numbered and has an associated QC report. This QC report is not simply a frequency chart, but contains actual measurements from the tape ensuring adherence to the NAB standard. Printed instructions are included.

Features:

• All signals recorded with equalization and levels in accordance with NAB standards.
• Full track recording for use with mono, stereo (2 track & 4 track) and quad tape machines.
• All signals on this tape are original master recordings made in real time directly from calibrated sources.
• A graph of the frequency response of each tape is included.
• Our exclusive ToggleTone test signal for easy high frequency adjustment.
• A convenient usage tally is provided to track play back passes.
• Detailed printed instructions are included.
• A new high quality small hub 7" reel

The tape contains the following signals:

500hz @-10db

12.5khz Azimuth

(these tones are at -10db)

500hz/7.5khz ToggleTone (our exclusive tone for high freq adjustments)

7.5khz
5khz
2.5khz
1khz
500hz
250hz
100hz
50hz

500hz @0db (185 nWb/m)
400hz @Dolby level

Tolerances:
Level: +/- 0.25db
Frequency: +/- 1db (0.25db at medium frequencies)
Azimuth Angle: +/- 2 min to 90deg

Reference Fluxcivity:
185 nWb per meter

Equalization:
3180/90 uSec (NAB Standard)

Tape speed:
3.75 in./s

Made in the U.S.A.