Tektronix 071-0855-05 user manual Description of Status Window Virtual LED Indicators, Sef Oof

	Operating Basics: User Interface
Table 2-1: Description of Status Window Virtual LED Indicators
LED name	Description
Signal Present	The Signal indicator will light green when the receiver senses an incoming signal.
LOS	The Loss of Signal indicator is activated when a LOS condition has been detected.
LOF	The Loss of Frame indicator is activated when a Loss of frame condition has occurred.
SEF (OOF)	The Severely Errored Frame (Out of Frame) indicator is activated when an Out of frame
	condition has occurred.
FAS	The Frame Alignment Sequence indicator activates when errors have been detected in the
	A1/A2 framing bytes.
B1	The B1 indicator will activate when SDH Regenerator (SONET Section) parity errors have
	occurred.
TIM-S (RS TIM)	The TIM indicator activates when a J0 trace is received that does not match the expected trace.
AIS-L (MS AIS)	The AIS indicator activates when the overhead and SPE are set to all ones for a user-selected
	time.
B2	The B2 indicator activates when SDH Multiplex Section (SONET Line) parity errors have been
	detected.
RDI-L (MS RDI)	The RDI indicator activates when bits 6, 7, and 8, of the K2 byte have been a binary 110,
	respectively, for five or more consecutive frames.
MS REI (REI-L)	The REI indicator activates when a non-zero value in the M1 byte is detected.
AIS-P (AU-AIS)	The Path AIS indicator activates when the pointer is set to hex 3FF for five consecutive frames.
LOP-P (AU-	The LOP (Loss of Pointer) indicator is activated when a Loss of Pointer condition has occurred.
LOP)	A LOP condition exists when ten consecutive pointer errors are received.
B3	The B3 indicator activates when Path parity errors have been detected.
RDI-P (HP-RDI)	The RDI indicator activates when bits 5, 6, and 7 of the K3 byte have been a binary 1xx,
	respectively.
REI-P (HP-REI)	The Path REI indicator activates when bits 1-4 of G1 are decimal values between one and
	eight.
TIM-P (HP-TIM)	The TIM indicator activates when a J1 trace is received that does not match the expected trace.
	The trace setup is explained later in this section.
UNEQ-P (HP-	The unequipped path indicator activates when C2 equals zero.
UNEQ)
PLM-P (HP-	The Path Label Mismatch occurs when the received C2 does not match the expected C2.
PLM)
LSS	The Loss of Sequence indicator activates if BER is greater than or equal to 0.20 during an
	interval of one second or if the test sequence and reference sequence are out of phase.
Bit Error (TSE)	The Test Sequence Error indicator activates when a bit error occurs in the payload.

OTS9100 User Manual 2-21