ADTRAN Total Access 3000 - Page 253

Total Access
®
3000/3010 System Manual
6TAATP602-1E
TOTAL ACCESS 3000/3010
ATP-602
Page 3 of 6
© 2002, ADTRAN, Inc.
C. Set the DS-3 pattern generator for an unframed all ones pattern (AIS).
D. Set the DS-3 Network Loopback option to “Looped” in the DS-3’s Test Menu.
E. Set the DS-3 pattern generator to “Local Timing.”
F. Set the DS-3 MUX to “Loop Timing.”
G. Verify that the wideband power measurement of the DS3 signal is between
-4.7 dBm and +3.6 dBm.
6. Line Rate Accuracy Test
A. Connect the test circuit shown in Figure 4.
B. Set pattern generator to “Local Timing.”
Figure 2. DS-3 Output Signal Mask
Time Slots Normalized to Peak Location
Amplitude Normalized to Peak Location
-1.0 -0.5 0.5
0.5
1.0
1.0 1.50
Figure 3. Power Level Test Circuit
WECO 728A
or
Equivalent
WECO 728A
or
Equivalent
DS-3 Pattern Generator
RX TX
TTC-310
75
Total Access 3000/3010 DS-3 Transmission Analyer
TTC-310
(450 ft.)