MIL-STD-188-164 Interoperability Of Shf Satellite Communications TerminalsThis standard establishes mandatory Radio Frequency/Intermediate Frequency RF/IF and associated interface requirements applicable to Satellite Communications SATCOM Earth Terminals ET operating over military X-band and Ka-band Super High Frequency SHF channels. Military unique requirements for ET that may operate over commercial C-band, Ku-band, and Ka-band are included. Equipment developers may exceed the requirements herein to satisfy specific program requirements, provided that interoperability is maintained. Thus, incorporating additional standard and nonstandard capabilities and interfaces is not precluded. Existing SHF SATCOM terminals need not conform to this MIL-STD unless they undergo a modernization program.

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MIL-STD-188-164B

4.  GENERAL REQUIREMENTS

4.1 General. Unless a specific band is identified in a paragraph, each paragraph in this section applies to all bands of operation.

4.2 Transmission function.  The transmission function shall perform in accordance with 4.2.1 through 4.2.19.

4.2.1 Transmit chain alignment.  Transmit chain alignment functions (attenuators) shall be provided between all active components in the transmit chain.  These transmit chain alignment functions (attenuators) shall be physically separate and distinct from transmit power control functions.  Transmit chain alignment shall be determined with the following conditions:

gain.

a.  All power control functions shall be set to maximum

b.  Any single modem Tx function shall be set to maximum output power with all other modem Tx functions disabled.

With the above conditions set, transmit chain alignment functions shall be adjusted/enabled to cause the following device states:

c.  HPA operates at Plinear.

d.       All other active devices operate at or near their individual PSAT-10 dB points to within the tolerances specified in section 4.2.8 nTransmit Amplitude Response."

Compliance with transmission function requirements sections

4.2.2 through 4.2.19 shall be maintained.

4.2.2 RF frequency bands.  The transmission function shall be tunable in one or more of the SHF frequency bands listed in table I.

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