Operation Manual

ARGUS
A
RGUS 125 117
The meaning of the individual displays:
Signal The ARGUS has received the correct signal sent from the remote end
(access or terminal depending on the operation mode TE or NT
simulation) and indicates this by a + . If Rx and Tx are connected
normally a "=" will be shown after the signal; in the event that they are
inverted (swapped) an " X" will be displayed.".
FAS (Frame Alignment Signal)
Indicates whether the ARGUS could correctly synchronize with the
incoming 2 Mbit data stream’s alternating frame identification word or
message word and the, perhaps present, CRC4-superframe structure.
CRC4 det If CRC4-monitoring is active for the access or the terminal and the
ARGUS is able to synchronize itself to the CRC4 superframe, it will
indicate this by displaying ”CRC det +”. If ”CRC det –” is displayed
together with ”Signal +” and ”FAS +”, this indicates that no CRC4 is
active. To prevent power up effects (transients), we recommend that
you set the display and counter to a defined initial state with a RESET.
Code HDB3 Display the transmission code used (currently set to HDB3)
noA-Bit The remote end uses the A-Bit to signal whether the circuit is available
on their receive side.
noA-Bit + means A=0: Idle state
noA-Bit - means A=1: Return direction is not available
noAIS (Alarm Indication Signal)
AIS will be set if a component on the transmission line determines that
the signal they have received is faulty (e.g., in the event, that they lose
frame synchronization) and has sent a Time –1 (=AIS) to indicate this.
noAIS = + : No AIS occurred.
Sa5-Bit (Rx ,Tx) The Sa5-Bit (Rx) sent by the ARGUS can be configured in the
Configuration menu (see “Sa5 bits settings” on page 122. )
Sa6-Bit (Rx ,Tx) The Sa6-Bit (Rx) sent by the ARGUS can be configured in the
Configuration menu (see “Sa6 word settings” on page 122. )
E-Bit With the two E-Bits, E1 and E2, the remote end will report any CRC4-
errors that it finds on its receive side in the first or
second.submultiframe (the E-Bit will be set to 0).
E-Bit11+ : if both E-Bits are set to 1, no error occurred
E-Bit11+! : A CRC4-error was found (indicated by the “!”), however the
circuit is in largest part OK (see the E-Bit counter Ecnt or the CRC4
error counter CRCErr)