User guide

Understanding the N4916B Clock Multiplier
The clock multiplier option enables error counting and error analysis of devices
using half-rate clocking. The full-rate clock is needed to use the error, eye or jitter
analysis capabilities of Serial BERT.
N O T E
The clock multiplier functionality is only supported by N4916B.
Understanding the N4876A 28 Gb/s Multiplexer 2:1
The Agilent Technologies N4876A is a 2:1 multiplexer with an output data rate of
up to 28.4 Gb/s.
The N4876A multiplexer doubles the pattern generator data rate by multiplexing
two pattern generator channels. It extends the variable generator data rate of J-
BERT N4903B up to 28.4 Gb/s.
The Data In of N4876A has to be connected to Data Out of the PG, Aux Data In to
Aux Data Out of PG and Aux Clk In to Aux Clk Out of PG using the using the matched
cable kit with the part number N4915A-011. Its Data Output has to be connected
to the device under test.
Understanding the M8061A 28 Gb/s Multiplexer with De-emphasis
The Agilent Technologies M8061A is a 2:1 multiplexer to characterize serial
interfaces of up to 28.4 Gb/s with optional de-emphasis to extend the rate of J-
BERT N4903B pattern generator. For the most accurate receiver characterization
results, the M8061A provides four calibrated de-emphasis taps, which can be
extended to eight taps, built-in superposition of level interference and Clock/2 jitter
injection.
Setting up External Instrument(s) 2
Agilent J-BERT N4903B High-Performance Serial BERT 41