Textron Greenlee Communications DataScout 10G, Руководство пользователя

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Users Manual
DataScout 10G & 10Gx
47
In the example above the unit is currently in Loss of Signal, the LOS is RED and No
Signal detected is displayed at the bottom left.
Reported Alarms & Events:
LOS
– Loss Of Signal
CRC
– Error is received in the payload
OOF
– Out Of Frame
BPV
– Bipolar violation has occurred
AIS -
unframed all 1’s
F-Bit
– Framing Bit error
Yellow - RAI sent by far end device
1’s Den – 1’s density has been violated
UAS
– Unavailable seconds, seconds of SES after 10 consecutive seconds of SES.
ExZ
– Excessive Zero’s has been received, 15 zero’s for AMI and 7 for B8ZS.
Active alarms and events cannot be cleared until the condition itself goes away. For
the example above, LOS (inverse video) will not be cleared until valid DS1 pulses are
received. To clear the user must press the
CLEAR button.
Frequency, Level and Slips
Signal frequency and level measurement is at the bottom of the LCD. The frequency is
displayed in Hz and the level is displayed in dB-DSX and Vp-p. If no signal is received
the Freq & level will display “
No Signal detected
”. Slips are displayed under the fre-
quency and level. Note: a reference clock must be plugged into the DS1-B RCV (Ref)
jack. Slip compares the DS1-A clock to the reference (DS1-B RCV) clock and displays
the difference in frequency deviation (Hz) and slips (count).