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a 2003 document whose - Institute for Simulation and Training ...

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540<br />

Section 8<br />

Distributed Emission Regeneration family<br />

This section specifies the 8-bit Boolean array <strong>for</strong> the In<strong>for</strong>mation Layer Field in the Fundamental<br />

Operational Data record of the IFF/ATC/NAVAIDS PDU.<br />

Bit Meaning Values<br />

0 Not used 0<br />

1 Layer 1 0 = Not Present<br />

1 = Present<br />

2 Layer 2 0 = Not Present<br />

1 = Present<br />

3-7 Not used 0<br />

8.3.5.3 Layer Header<br />

8.3.5.3.1 Layer Specific In<strong>for</strong>mation<br />

This section specifies the 8-bit enumeration <strong>for</strong> the Layer Specific In<strong>for</strong>mation field in the Layer<br />

Header record of the IFF/ATC/NAVAIDS PDU.<br />

Field Value Layer Specific In<strong>for</strong>mation<br />

0 Other<br />

8.3.5.4 Secondary Operational Data<br />

This section specifies the 8-bit enumeration of the Operational Parameters 1 <strong>and</strong> 2 in the Secondary<br />

Operational Data record of the IFF/ATC/NAVAIDS PDU.<br />

8.3.5.4.1 Operational Parameter 1<br />

Field Value Operational Parameter 1<br />

0 Other<br />

8.3.5.4.2 Operational Parameter 2<br />

Field Value Operational Parameter 2<br />

0 Other<br />

8.3.6 Specific Issuance/Receipt Rules<br />

8.3.6.1 Issuance Rules: System Type 1 (Mark X/XII/ATCRBS/Mode S Transponder)<br />

1) System ID Record: Alternate Mode 4. Any application that transmits Mode 4 shall<br />

always set the Alternate Mode 4 field to the appropriate value in the Fundamental Data<br />

Record <strong>and</strong> shall set the Alternate Mode 4 field in the System ID Record to 1. The<br />

application may also send a "pseudo-crypto" value in the Mode 4 parameter if coordinated<br />

with other sites prior to the exercise.

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