Paradise P300 specifications MIL-STD-188-114A Interface, With older equipment

MIL-STD-188-114A INTERFACE

The P300 Series terrestrial interface is compliant with the interfaces defined in MIL-STD-188-114A when set in RS422 mode.

This MIL-STD document specifies three types of `balanced generators`

Type 1	Low offset voltage, for <100kbps. Defined in this 1985 document for compatibility
	with “older equipment”.
Type 2:	3V offset maximum, for 100kbps to 10Mbps. MIL-STD-188-114A actually
	specifies this “corresponds to the EIA RS-422A balanced generators”
Type 3:	New terminated voltage generator for >10Mbps

Strictly the P300 Series is compliant with the Type 2 interface, defined for use from 100kbps to 10Mbps, however in the P300 Series this interface will also operate down to 4800bps. The low offset voltage Type 1 generator is not supported, but as specified for use with “olderequipment” in 1985, should not be an issue today. The Type 3 is for data rates beyond the P300 Series operating range, and also is not supported.

A few notes from MIL-STD-188-114A

“Connectors, pin assignments and communication protocols are not standardised in this MIL-STD document”

FED-STD-1030A may be considered equivalent to EIA RS423A and CCITT V.10 FED-STD-1020A may be considered equivalent to EIA RS422A and CCITT V.11

P300H P300 Series Modem Installation and Operating Handbook Page 175