scope:

This standard covers the magnetic tape recorder configurations to be used to record and reproduce ASW sensor and system data.

This standard is required for the acquisition of new or updated magnetic tape recorder/reproducers format for ASW systems which record and reproduce any quantity of data in any of the following formats:

(a) Analog direct (wideband, 2 megahertz (MHz)).

(b) Analog frequency modulation (FM) (wideband - group II).

(c) Single-track or multi-track serial high density digital (HDDR).

(d) Parallel HDDR.

(e) Mixed analog/digital.

(f) Rotary HDDR.

This standard is applicable to and includes all new air, surface, subsurface, and land-based ASW recording systems. In addition, it applies to all new acquisitions of any quantity of analog FM, analog direct, serial or parallel high density electronics to retrofit existing magnetic tape systems for acquisition and reconstruction of ASW sensor and system data.

This standard covers 28-track longitudinal recording using 1-inch (25.4 millimeter (mm)) wide tape and rotary recording using 19 mm magnetic tape. Fourteen-track longitudinal systems are also covered as a subset of 28-track systems.

This standard defines the terminology, standardizes the recorder/reproducer configuration, and defines certain performance limits to assure crossplay compatibility between tapes recorded at one ASW facility or platform and reproduced at another.