a. Touch the Sub-rowSub-row field to set the sub-row.
b. Insertion ModeInsertion Mode is fixed to "Single".
Touch the Error InsertError Insert icon. The error is inserted once by touching the
icon.
For O.182 Poisson, refer to the white paper on Anritsu homepage:
FEC Efficiency New Test Method - Required by ITU-T New Rec. O.182 -
OTLOTL
1. Select the TypeType.
2. Select the Alarm ItemAlarm Item or Error ItemError Item.
3. Select the Insertion ModeInsertion Mode. When setting to "Burst", touch BurstBurst field and set
value. When setting to "Alternate", touch Error lengthError length, Normal lengthNormal length fields
and set values.
4. Touch the buttons of LaneLane, the dialog box will appear.
5. Touch the buttons to select/clear lanes. The errors will be inserted to selected
(orange) lanes.
77..11..44..22 OTN OTL skewOTN OTL skew
1. Touch the field below the port selection to set the number of skew bits. The
calculated skew time is shown below the field.
2. When the output signal is set to OTU4, select the Lane typeLane type.
3. Touch the buttons of Insertion LanesInsertion Lanes, the dialog box will appear.
4. Touch the buttons to select/clear lanes. The skew will be inserted between
selected (orange) lanes and non selected (gray) lanes.
Setting to "0" means that inserting no skew.
77..11..44..33 OTN frequencyOTN frequency
Touch the field to set Frequency OffsetFrequency Offset. If setting a positive value, the frequency
will shift higher side.
Example:
If setting 100 ppm to the frequency offset for OTU2 output signal, the bit rate
of output signal will be
10 709 225.316 * (1+100*10
-6
) = 10 710 296.239 (kbit/s).
Nominal bit rates defined in ITU-T are shown below.
OTU typeOTU type OTU nominal bit rate (kbit/s)OTU nominal bit rate (kbit/s)
OTU1: 255/238 * 2 488 320 = 2 666 057.143
OTU2: 255/237 * 9 953 280 = 10 709 255.316
OTU1e: 255/238 * 10 312 500 = 11 049 107
OTU2e: 255/237 * 10 312 500 =11 095 730
OTU1f: 255/238 * 10 518 750 =11 270 089
OTU2f: 255/237 * 10 312 500 =11 317 642
OTU3: 255/236 * 39 813 120 =43 018 413.559
OTU3e1: 255/236 * 4 * 10 312 500 = 44 570 974.576
OTU3e2: 243/217 * 16 * 2 488 320 =44 583 356
OTU4: 255/227 * 99 532 800 = 111 809 973.568
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