Solid State On-Board Recorder Standard

Solid State On-Board Recorder Standard

10.1 General

A large number of unique and proprietary data structures have been developed lately for specific data recording applications that require unique decoding software programs. Writing unique decoding software, checking the software for accuracy, and decoding the data tapes is extremely time consuming and costly. In addition, the test ranges have seen the implementation of non-tape-based, high data-rate recorders in the late 1990s ― the most predominate being solid-state memory devices. As high-rate digital recorders were fielded, and with solid state on the horizon, the Telemetry Group (TG) formed an ad-hoc committee to research and write a computer compatible, digital data acquisition standard.

b. One or more multiplexed data streams

c. One or more single data streams

d. Read-after-write and read-while-write options

e. Data format definitions

f. Recorder control

Figure 10-1. Functional layout of standard.

Four interface levels are provided in this standard:
1. Data download and electrical interface, which is the physical interface for data access (defined in section 10.4).

2. Interface file structure, which defines the data access structure (defined in section 10.5).

3. Data format definition, which defines data types and packetization requirements (defined in section 10.6).

4. Solid-state recorder control and status, which defines command and control mnemonics, status, and their interfaces (defined in section 10.7).