NIC Quick Reference Guide
1
SONET/SDH Testing Quick Start
The following steps outline the basic procedure for setting up a
Bit Error Rate test on a SONET or SDH interface. A number of
different modules support SONET/SDH testing (MSA, NGMR,
OMR, etc.). The basic procedure is the same for all but certain
steps, names of menu items and indications differ depending
upon which module is being used. Also, certain specialized
functions are not included in this Quick Start. For full informa-
tion on test setup, see the Online Help User’s Guide.
Note: This Quick Start assumes that the test set is fully booted
up and that the device or system under test is connected.
1. Select the SONET, SDH tab at the top of the screen, or for older
module types select OC-12, STM-4, OC-48, etc.
2. It is a good idea to restore the unit to factory defaults before begin-
ning any test. Select Save/Restore, then select Restore This Test Set
and choose either of the two following options:
3. Select Transmit, then Set, then Interface and choose required inter-
face, e.g. STM-64, OC-192, STM-16, OC-48, etc.
4. Select Mapping and choose required mapping type to match the
device or system under test.
5. Select Payload and choose required pattern.
6. Select Clock Reference and choose one of the following settings for
the transmit clock:
• Internal (OK when the unit is looped on itself, usually not
appropriate for actual testing)
• Recovered (Sets the transmit clock to match the incoming
SONET or SDH signal)
• External (Some modules will have several options including
BITS/SET, External 8KHz, External 10MHz, etc.; If external
timing is chosen, then a valid clock signal must be connected to
the appropriate clock input port on the NIC.
7. Turn on laser. The button is located in the upper left of the screen.
8. Confirm Rx power level is within the NIC’s specifications. Power
level is indicated just below the Laser is On button in the upper left
To Next Page
Loading...