scope:

Policies and procedures established by DoD-STD-1399 are mandatory. This section and the basic standard (that is, DoD-STD-1399) are to be viewed as an integral single document.

This section establishes interface requirements for shipboard equipment utilizing the Precise Time and Time Interval (PTTI) Platform Distribution System (PDS) in order to ensure compatibility between the user equipment and the PTTI PDS.

The basic characteristics and constraint categories concerned with this interface are shown symbolically in FIGURE 1 (see section 3 "Definitions" of DoD-STD-1399):

The particular interface characteristics and constraints pertinent to this section are described in 5.2 and 5.3.

The criteria of this section are applicable to new ship acquisitions, ship modernizations, and ship conversions wherein a requirement exists for equipment utilizing the outputs of the PTTI PDS. They apply also to ships having equipment to be interfaced in part with the PTTI PDS to the extent indicated (for example, frequency support only).