User guide
1
Use the N4915A-004 cable or a 2.4 mm cable (m-m) longer than 350 mm and
connect the pattern generator's Data Out port to the Input port of the N4916A.
2
Mount the SMA 50 Ohm termination on the unused Data Out port of the pattern
generator using the SMA to 2.4 mm adapter.
3
Enable the De-Emphasis Signal Converter as described in “How to Enable/
Disable N4916B De-Emphasis Function” on page 46 and set the levels such
that the DUT will not be damaged.
4
Use a matched pair of 2.4 mm cables to connect the differential outputs of the
N4916A to the DUT. If only one output of the de-emphasis signal converter is
needed, connect a 2.4 mm 50 Ohm termination to the unused output.
Connecting to Pattern Generator and DUT (N4916B)
After the USB port has been configured, you can remove keyboard and mouse and
make the signal connections.
1
Use the N4915A-010 matched cable pair (1x 2.4 mm to SMA for data, 1x SAM-
to-SMA for clock) longer than 350 mm.
2
Connect the pattern generator’s Data Out port to the Data Input of N4916B and
the pattern generator’s Aux Clk Out to the Clock In of N4916B.
3
Mount the SMA 50 Ohm termination on the unused Data Out port of the pattern
generator using the SMA to 2.4 mm adapter.
4
Enable the De-Emphasis Signal Converter as described in “How to Enable/
Disable N4916B De-Emphasis Function” on page 46 and set the levels such
that the DUT will not be damaged.
5
Use a matched pair of 2.4 mm cables to connect the differential outputs of the
N4916B to the DUT. If only one output of the de-emphasis signal converter is
needed, connect a 2.4 mm 50 Ohm termination to the unused output.
Installing the N4876A - Procedure
The N4876A 28 Gb/s Multiplexer 2:1 is an optional instrument that can be
connected to the Serial BERT. For general information see “N4876A 28 Gb/s
Multiplexer 2:1” on page 17.
When you install the N4876A for the first time, you need to configure the USB
interface of the Serial BERT.
For this configuration, you may wish to connect a keyboard and a mouse to the
Serial BERT (see “Connecting Peripherals” on page 529). This is not mandatory
but convenient – the keys provided by the instrument can be used as well for
10 Customizing the Instrument
544 Agilent J-BERT N4903B High-Performance Serial BERT