RAD Data comm ASM-20 Functional Description, CDD conditional diphase modulation technique

Chapter 1. Introduction ASM-20Installation and Operation Manual

VAC 50V2T		D T E
		X M T	R C V	G N D
-11 5	.2A
100	-0

~230 V/ 0.1A T 250V

Figure 1-5 ASM-20 Rear Panel with V.35 Interface

1.3 Functional Description

This section contains functional descriptions of the circuit blocks in ASM-20, primarily those circuits which are required for configuring the modem (see Figure 1-6).

	Figure 1-6 ASM-20 Block Diagram
Encoder	The encoder receives data from the DTE, then modulates the data using the
	CDD “conditional diphase modulation” technique.

∙4-wire full duplex

∙4-wire half duplex.

1-4 Functional Description