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A-2 OTS9100 User Manual
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.