Textron Greenlee Communications DataScout 10G, Руководство пользователя

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Users Manual
DataScout 10G & 10Gx
89
►
All-
0’s –
used to verify zero coding and stress signal and clock recovery cir-
cuits
►
Alt, 1:1
– 101010 a fixed pattern with no BPV’s
The test set will display the industry standard DDS/DataCom errors (AS,%AS, UAS,
DGRM, Blk Size, BLK’s, BLK Error and BLK rate) along with BERT pattern in Green if
in Sync and
Bit errors “ 0”
next to the BERT pattern. A user can change the Bit count
display by tapping on the Count pull-down menu and selecting one of the following:
►
BER
– View the bit error rate (bits in error/total bits) since the start of the test
►
ES (Errored Seconds)
– displays the number of seconds in which one or more
errors occurred
►
EFS ( Error Free Seconds)
– displays the number of total seconds that a test
has run error free
►
%EFS (Percent Error Free Seconds)
– displays the current ratio of EFS to to-
tal test seconds
►
SES (Severely Errored Seconds)
– the total number of seconds with an error
rate >= 1.0e-3
►
%SES (Percent Severely Errored Seconds)
– the current ratio of SES to total
test seconds
Bit Error Insertion
To insert a Bit Error into the transmit data stream, tap the Insert Error button. The test
set will insert one error with each press of the Insert Error button and can also inject
errors at a predefined rate.
CLEAR Errors
To clear Errors, tap the CLEAR button. The Bit errors will be cleared to zero and the
“ET: xxx” will be cleared and restarted.
Receive Byte and Control Code Decode
Real-time Received data is displayed (below the bit
#’s) in binary and hex formats
along with a real-time decode of all defined data and control codes. The test set will
also display an Invalid Bipolar Violation Code (BPV) if detected. These typically occur
when one side of Tip or Ring is not connected.