Tektronix cts710 Manual de usuario descargar pdf (Pagina 147)

Checking Signal Status

CTS 710 SONET Test Set User Manual

3–57

Figure 3–19: Viewing Tributary Signal Structure

Determining the Payload Pattern and Framing (Add/Drop/Test Option

Only)

To search for a pattern in the data of the received signal or determine

the framing, select Analyze VT. After you select Analyze VT, the

CTS 710 scans the selected VT in the received signal to see if it

there is a pattern within the data and if the signal is framed. If a

pattern is found, it is displayed below the payload map on the Pattern

line (for example, PRBS 2^23–1). If the CTS 710 is unable to find a

pattern within the signal, it displays Unknown on the Pattern line.

The CTS 710 will display Unframed or Framed on the Framing line.

To scan every VT in the received signal, select Scan All VTs. As the

CTS 710 scans the signal, it will indicate for each VT whether it has

detected an alarm, whther the VT is equipped, and whether a test

pattern was found in the VT. The key which describes each of the

indicators is located in the lower, right corner of the AutoScan dialog

box (see Figures 3–19 and 3–20).

Checking Signal Status

CTS 710 SONET Test Set User Manual

3–57

Figure 3–19: Viewing Tributary Signal Structure

Determining the Payload Pattern and Framing (Add/Drop/Test Option

Only)

To search for a pattern in the data of the received signal or determine

the framing, select Analyze VT. After you select Analyze VT, the

CTS 710 scans the selected VT in the received signal to see if it

there is a pattern within the data and if the signal is framed. If a

pattern is found, it is displayed below the payload map on the Pattern

line (for example, PRBS 2^23–1). If the CTS 710 is unable to find a

pattern within the signal, it displays Unknown on the Pattern line.

The CTS 710 will display Unframed or Framed on the Framing line.

To scan every VT in the received signal, select Scan All VTs. As the

CTS 710 scans the signal, it will indicate for each VT whether it has

detected an alarm, whther the VT is equipped, and whether a test

pattern was found in the VT. The key which describes each of the

indicators is located in the lower, right corner of the AutoScan dialog

box (see Figures 3–19 and 3–20).

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