Specifications

Transmitter Specifications

Clock Source

Internally generated clock:

9953.28 MHz +/- 4.6ppm

Thru mode clock:

Derived from clock recovered from received signal

External Clock:

155.52MHz +/- 100ppm

Signal Generation

Internal Mode

This mode requires no external test equipment to generate a valid 9.95238 Gb/s output.

Data: 9.95238 Gb/s output with PN7 scrambled NRZ format; in BERT mode, unframed and unscrambled PRBS data

 

Table A-1: SONET Default Overhead

 

 

Section

A1 and A2 are set to (hexadecimal) F6H and 28H, respectively.

 

The J0 byte is set to the 16-byte string “Tektronix/BTT”. The first byte of this

 

string is the CRC.

 

B1 contains computed BIP-8.

 

191 Z0 bytes are set to 0xCC.

 

All other Section OverHead (SOH) set to 00H.

 

 

Line

For each channel, the first H1 is set to 62H and the first H2 is set to 0AH.

 

For concatenated structures, subsequent H1’s are set to 93H and H2’s are set to

 

FFH filling the remaining pointer values for the structure before repeating first

 

H1, H2.

 

H3’s are all set to 00H.

 

B2 contains (192) computed BIP-8.

 

All other Line OverHead (LOH) set to 00H.

 

 

Path

B3 contains computed BIP-8

 

The J1 byte is set to the 16-byte string “Tektronix/BTT”. The first byte of this

 

string is the CRC.

 

All other Path OverHead (POH) set to 00H.

 

 

A-2

OTS9100 User Manual

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Tektronix 071-0855-05 user manual Transmitter Specifications, Clock Source, Signal Generation, Internal Mode