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Selecting Test Features
Adding Errors & Alarms to the PDH Interface/PDH Payload
DS1 Signal LOS: The output signal is turned off (not available when mapped into
SONET/SDH).
DS1 OOF:- The selected framing is turned off
DS1 AIS: - Unfamed all ones is transmitted
DS1 RAI/YELLOW:
ESF: The 4 kHz data link carries a repetitive 8-zeros/8 ones pattern as
defined in Bellcore TA 194.
D4(SF), SLC-96: Bit 2 of every timeslot is set to ‘0’.
DS3 LOS: - The output signal is turned off (not available when mapped into
SONET/SDH
DS3 OOF: - The F framing bits are set to 0
DS3 AIS: - Generates a 1010....sequence.
DS3 IDLE: - 1100 repeating pattern.
DS3 RAI/X-BIT:- The X1, X2 bits are set to 00. Also known as a Remote
Defect Indicator (RDI)
FEAC Codes: - With CBIT Payload Type selected on the Transmitter
MAIN SETTINGS page the HP 37717C can transmit DS3 FEAC codes.
Refer to the following page for an explanation of FEAC codes and how to
use them with the HP 37717C.
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