Total Access
®
3000/3010 System Manual
6TAATP602-1E
TOTAL ACCESS 3000/3010
ATP-602
Page 4 of 6
© 2002, ADTRAN, Inc.
C.
Set the DS-3 pattern generator for a normal test pattern (i.e. QRSS, 2
20
-1,
etc.).
D
Set the DS-3 Network Loopback.
E
Verify RX frequency is
±
20 ppm (
±
895 bits/sec) or better.
7.
Output Jitter Level Test
A.
Connect the test circuit shown in
Figure 5.
B.
Set the DS-3 pattern generator to “Local Timing.”
C.
Set the DS-3 test pattern to QRSS on the pattern generator.
D.
Set the DS-3 MUX to “Loop Timing.”
E.
Set up a Network Loopback on the DS-3 MUX.
F.
Set the LBO to “Long” on the DS-3 MUX.
G.
Verify that the wideband jitter is
≤
5.0 UI and the highband jitter is
≤
0.1 UI, where 1 UI = 22.4 ns.
8.
Pulse Amplitude Test
Use the circuit illustrated in Figure 1 for this procedure.
A.
Select an isolated ones pattern on the pattern generator.
Figure 5. Output Jitter Level Test Circuit
WECO 728A
or
Equivalent
WECO 728A
or
Equivalent
DS-3 Pattern Generator
RX
RX
TX
TX
TTC-310
Total Access 3000/3010
DS-3 Transmission Analyzer
TTC-310
(225 ft.)
(225 ft.)
Figure 4. Line Rate Accuracy Test Circuit
TX
WECO 728A
or
Equivalent
WECO 728A
or
Equivalent
DS-3 Pattern Generator
RX
TX
TTC-310
Total Access 3000/3010
DS-3 Transmission
Analyzer
TTC-310
(<150 ft.)
(<150 ft.)
