System Details and Performance Specifications
Serial BERT 12.5 Gb/s User Guide
31
The PRBS output bit stream is amplified by an adjustable gain stage. The
output amplitude ranges from 300 mV pp to 1800 mV pp per output (0.6 V pp to
3.6 V pp differential) in 10 mV pp increments.
The amplified PRBS output signal is available from the single-ended or
differential 2.92 mm K-connector OUT/OUT
¯¯¯connectors on the front panel. The
PRBS generator also generates a pattern trigger output, available from Pat
TrigO on the back panel, which changes state after 32 complete PRBS bit
streams have been generated. Pat TrigO has a frequency equal to
(clock_rate) / (32 * bit_pattern_length). Users of Pat TrigO should verify that
its output is a square wave in order to ensure proper pattern triggering.
Table 6. Parameters for N4962A PRBS generator (OUT, OUT
¯¯¯)
Data rate
0.5 to 12.5 Gb/s
PRBS patterns
2
n
– 1, n=7, 10, 15, 23, 31
Mark space density
1/2, 1/4, 1/8
Pattern invert
available for all patterns
Error injection
selectable uniform rate
Error injection rates
1 x10
n
errors per second, n = 1, 2, 3, 4, 5, 6, 7
Data output amplitude
300 to 1800 mV pp (single-ended)
Data output amplitude resolution
10 mV
Data output jitter
1.1 ps rms typical at 10 Gb/s
Data output rise/fall time (20% to 80%)
18 ps typical, 23 ps maximum
Data output external interface
(May be operated single end without unused output
terminated into 50
Ω.)
TXCKI Clock input frequency range
0.5 to 12.5 GHz
TXCKI Clock input amplitude range
0 to +10 dBm (630 mV pp to 2 V pp)
TXCKI Clock input external interface
AC coupled, 50 Ω nominal, female SMA
The PRBS bit stream consists of data generated by one of five patterns, listed
in Table 7. The pattern length is a system configuration setting, selected by
changing the Config State “PAT xxxx” setting, detailed in Section 4.2.3.
Summary of Contents for N4962A
Page 1: ...Agilent N4962A Serial BERT 12 5 Gb s User Guide...
Page 6: ......
Page 16: ...Getting Started 16 Serial BERT 12 5 Gb s User Guide...
Page 24: ...N4962A System Overview 24 Serial BERT 12 5 Gb s User Guide...
Page 36: ...System Details and Performance Specifications 36 Serial BERT 12 5 Gb s User Guide...
Page 60: ...Operation 60 Serial BERT 12 5 Gb s User Guide...
Page 86: ...Remote GPIB Interface 86 Serial BERT 12 5 Gb s User Guide...
Page 88: ...Copyright Agilent Technologies 2012 Third edition May 2013 Printed in Germany...
