ADC Broadband System 244

ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance

				DLP-570
				Page 11 of 18
		Table 570-1. RTAU Configuration Fields, continued

FIELD	TYPE	OPTIONS	DESCRIPTION	DEFAULT
SIGNAL GENERATOR SETUP FIELDS, continued
Loop Code	Toggle	OVERVIEW: The Mode field must be set to a SPLT option before the Loop Code		NONE
		field can be configured. Loop codes will be transmitted until the RTAU detects a
		change in the signal being received. At that time, the pattern selected before the loop
		code was set will be transmitted. For example, when sending a Loop Up code, the
		RTAU will restore the original pattern after it receives the loop code it is transmitting,
		indicating that the circuit is looped up. Note that the Loop Code bits are displayed in
		the Loop Code bit field as each code is selected. This is provided as a convenience to
		the operator who may not know the name chosen for the loop code but does know
		the pattern.

		Line Loop Up	10000

		Line Loop	100
		Down

		4-Bit Loop Up	1100

		4-Bit Loop	1110
		Down

		5-Bit Loop Up	11000

		5-Bit Loop	11100
		Down

		ESF CSU	0EFF (0000 1110 1111 1111)
		Loop Up

		ESF CSU	38FF (0011 1000 1111 1111)
		Loop Down

		ESF NI* Loop	12FF (0001 0010 1111 1111)
		Up

		ESF NI* Loop	24FF (0010 0100 1111 1111)
		Down

		ESF CSU	14FF (0001 0100 1111 1111)
		Payload Loop
		Up

		ESF CSU	32FF (0011 0010 1111 1111)
		Payload Loop
		Down

		User Loop Up	Enter a 16-value expression using only 1’s, 0’s, or “-”. The
		(toggle and	bits can be entered by typing a string of 0’s or 1’s in the bit
		input)	field located to the right of the designated entry.

		User Loop	Enter a 16-value expression using only 1’s, 0’s, or “-”. The
		Down	bits can be entered by typing a string of 0’s or 1’s in the bit
			field located to the right of the designated entry.

		NONE	Disables any active loop code selected for this field. When
			NONE is selected, the Loop Code field displays 16 dashes.

*Note: “NI” means Network Interface device.

(continued)