Verilink PRISM 3002 (34-00277) Product Manual - Manual (Page 35)

Maintenance Screen 4-13
causes the unit to transmit in-band V.54 fractional loop code toward the network in
the port’s bandwidth.
Port Unloop Pressing Enter takes down the specified loop from the currently selected port.
FP Buttons This field allows enabling or disabling the Test and Loop buttons on the unit front
panel.
BERT This field selects the interface and direction for the test pattern transmission. The
choices are T1 NET, One NET, One DTE, Channel 1-24, and IDLE. The internal
BERT may also be activated through the front panel test switch as specified in
Controls and Indicators on page 3- 1.
Pattern Specifies the pattern to be transmitted during a test. Modifying this field does not
cause the pattern to be transmitted (refer to on page 4- 14). The choices are QRSS,
63, 511, 2047, 2
15
, 2
20
, 2
23
, 1:8, 3:24, ALT, and Clear.
Test
Length
Defines the run- time of test pattern generation and error accumulation. The
choices are 15 min, 30 min, 60 min, 24 Hour, and Continuous.
Pattern
Sync
This field displays the current state of pattern sync during a test. If no test is in
progress, No Test is displayed. If a test is active, but the receiver is not in pattern
sync, No Sync is displayed. If the receiver is in pattern sync, In Sync is displayed.
Elapsed
Time
Displays the amount of time elapsed since a timed test began or, if completed, the
total test time.
Bit Errors Displays the total number of bit errors detected since the test began or since error
statistics were cleared (up to 999,999).
Errored
Seconds
This field displays the number of asynchronous errored seconds that have been
detected since the test began or since error statistics were last cleared. This
parameter includes bit error seconds and sync loss seconds.
Network Interface Framer/Deframer multiplexer Receivers /Drivers
Receivers/Drivers
BERT Generator /
Detector
EIA-530 or V.35
(100' max.)
Framer /Deframer
To
NET
From
NET
To Network
From Network
RJ48C
5
4
2
1 To
Ports
From
Ports
DTE
Near/Far
Port Loop (bidirectional)