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ADCP-61-471 • Issue 4 • June 2000 • Section 2: Operation and Maintenance
2-220
© 2000, ADC Telecommunications, Inc.
DLP-570
Page 10 of 18
Table 570-1. RTAU Configuration Fields, continued
FIELD TYPE OPTIONS DESCRIPTION DEFAULT
SIGNAL GENERATOR SETUP FIELDS, continued
Pattern Type,
continued
Toggle 1 in 8 Containing strings of 7 sequential 0’s. It is used to determine
the ability of a circuit to handle payload signals having
minimum 1’s density. Use of this pattern often reveals the
existence of timing recovery problem under conditions of
low signal density.
• Unframed = 1000 0000 1000 0000
• Framed = 0100 0000 0100 0000
DALY Daly Pattern (Modified 55 Octet). This is useful for stressing the
timing recovery circuits of line cards and the preamplifier/
equalizer circuits of repeaters. The pattern stresses a circuit by
introducing rapid transitions from long sequences of low density
octets to high density octets, high density octets to low density
octets, and rapid transitions. The pattern may be transmitted
framed or unframed. When framed, the frame bit shall be inserted
at the octet boundaries and will not overwrite the bits.
User Code For user-defined patterns of 32 bits or less, set the Pattern Type
field to User Code. The 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.
Pattern Bits Display
only
None If the Pattern Type field is configured for User Code, pattern
bits will be displayed to the right of the Pattern type field
parameter. This field’s name is not shown on the screen. If no
User Code is entered in the Pattern Type field, this field
displays 32 dashes.
None
Frame Format Toggle UNFRAMED Unframed data pattern. UNFRAM
ED
Ft ONLY Used for SLC framing.
SF Super Frame
ESF Extended Super Frame
(continued)