Framing: Options are PCM31, PCM31C, PCM30, and PCM30C per G.704 and G.706 recommendations same as E1 described
above.
Note: Unframed signal types are not supported in the Nx64 fractional mode because framing is required to determine the location
of timeslots.
Unused: AIS, Broadcast, Unequipped used to fill up the unused (idle) timeslots
Timeslot Selection: Select the timeslot by tapping the applicable box. Deselect the timeslot by tapping the box again.
Note: Timeslots 1-31 correspond to channels 1-31 when using PCM-31 framing. When using PCM-30 framing, timeslots 1-15
correspond to channels 1-15, while timeslots 17-31 correspond to channels 16-30. Timeslot 16 is used for the Multi Frame
Alignment Signal.
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18.1.4 Pattern
Tap on the pattern box to access this feature. The test patterns can be applied to all PDH/DSn rates; however, ITU-T
recommends certain sequences dependent on the bit rate under test.
Coupled Pattern
Pattern: Use the pattern drop down box to select the test pattern which will be inserted into the transmitted signal. Pseudo
Random Bit Sequences (PRBS) defined by ITU-T 0.150 and 0.151 standards, fixed words and 24-bit or 32 bit user defined
patterns are available.
Note: If the 32 bit user pattern entered is incorrect, the default pattern will be 0xFFFFFFFF.
Invert: Inversion of polarity is available.
Out of Service (Rx only): Should be selected if the incoming signal is expected to contain a known test pattern. Deselect this
option if signal is expected to contain live network traffic, this will disable the pattern detection process and will enable the
reporting of LSS.
Note: ITU-T specification 0.150 recommends the following test patterns:
TX130M+_e-manual_D07-00-051P_RevD00
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