User guide

E1-A and E1-B Tests
Multi Protocol Test Set 237
Facility Results
AIS (Alarm Indication Signal): Occurs when an AIS signal (all 1s) is
detected at the input, and still exists after the LOF alarm is declared
active (caused by the unframed nature of the all 1s signal). The AIS
alarm is cleared when the LOF alarm is cleared.
RAI (Remote Alarm Indication): Indicates that the far-end equipment
has a problem with the signal that it receives from the local equipment.
UAS (Unavailable Seconds): Indicates seconds of SES after 10
consecutive seconds of SES.
³ Events - CNT, BER, ES, EFS, %EFS, or SES: indicates the event types
and allows the selection of the count (CNT), Bit Error Rate (BER),
count of Errored Second (ES), count of Error Free Second (EFS),
percentage of Error Free Second (%EFS), or count of Severely Errored
Second (SES).
CRC (Cyclic Redundancy): Occurs when the error is received in the
payload.
BPV (Bipolar Violation): Occurs when the next successive pulse in
transmission, is of the same polarity at the previous pulse.
Fbits (Framing Bit error): Indicates that an incorrect value appeared in
a bit position reserved for framing.
FEBE (Far End Block Error): Is an alarm signal, which indicates the
transmitting node that the receiver has detected a block error.
Note: When there is no error, event, and bit
error, the NO ERRORS is displayed if
Show NO ERRORS is selected (see
Show NO ERRORS on page 255).