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ADCP-61-743 • Issue 3 • September 2004
Page 20
2004, ADC Telecommunications, Inc.
Table 3. 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. UNFRAMED
Ft ONLY Used for SLC framing.
SF Super Frame
ESF Extended Super Frame
(continued)