Agilent N5980A
3.125 Gb/s Serial BERT
Data Sheet
Version 1.0
Key Benefits
• Standard measurement rates between 125 Mb/s and
3.125 Gb/s
• Electrical and optical (SFP) interfaces (generator:
concurrently)
• PRBS, K28.5 pattern or clock generation and integrated
clock data recovery
• Smallest BERT available today
• Easy-to-use and cost efficient
• Controlled from user software running on an external
Windows 2000 or XP PC connected by a USB 2.0
interface
• BERT can be fully programmed
The Agilent N5980A 3.125 Gb/s Serial BERT is ideal
for manual or automated manufacturing test of electrical and optical devices running at speeds between
125 Mb/s to 3.125 Gb/s. It addresses all common standard speeds via selectable bit rates.
Easy-to-use and cost efficient
The software user interface has one standard or one
advanced screen to ensure intuitive use for operators.
It makes the instrument easy to use and easy to learn.
Twice the measurement throughput
By using both the electrical and optical (SFP) interfaces concurrently, you can double your measurement
throughput (electrical in/optical out and vice versa).
Automation made easy
The remote programmability of the user interface,
using SCPI - syntax, makes it simple to integrate the
N5980A into other programs.
PRBS, K28.5 pattern or clock generation and integrated clock
data recovery
The N5980A can generate standard PRBS polynomials,
K28.5 (‘Comma’) characters and different sub-rate
clocks ( /2 to /20). It can also inject errors with an
adjustable error ratio. The receiver has a clock-data recovery (CDR) built-in and differential inputs (SMA)
for signals from 50 mVpp to 2 Vpp amplitude.
Standard (SFP) optical module plug-in
The instrument has a standard SFP- female connector.
This enables all different kind of user-selectable optical modules (e.g for multi-mode/single-mode fiber at
850nm, 1310nm and 1550nm for the test set-up).
Small size
Its very small size allows the N5980A to fit on any
bench and in any automated setup. The dimensions
are, W x H x D, 228mm x 59mm x 246mm (Bench top
dimensions.)
System Specifications
Data rate
The same data rate applies for pattern generator
electrical out and optical out, and for error detector
electrical in and optical in.
Data rates
Fast Ethernet
OC-3
OC-12
OC-48
OC-48 with FEC
1 x FC
2 x FC
1 x Gigabit Ethernet
XAUI
Accuracy
Out/Out
Output type
Amplitude, selectable
ECL:
125 Mb/s
155.52 Mb/s
622.08 Mb/s
2.48832 Gb/s
2.66606 Gb/s
1.0625 Gb/s
2.125 Gb/s
1.25 Gb/s
3.125 Gb/s
± 50 ppm
Operating system
The software supplied runs on Windows 2000 or XP
with .NET v2.0, by a USB 2.0 interface.
LVDS:
Jitter peak-peak
Connector
differential, AC-coupled,
external 100 Ω
differential termination
850 mVpp typ., single-ended
1700 mVpp typ., differential
400 mVpp typ., single-ended
800 mVpp typ., differential
0.05 UI typ. @ OC-12
0.08 UI typ. @ GbE
0.15 UI typ. @ OC-48
SMA, front panel
Pattern generator optical out
A standard SFP housing is provided. Minimum number of insertion/deinsertion cycles: 200.
Trigger output
A single-ended, electrical output is provided on the
front-panel.
Trigger out
Output type
Impedance
Amplitude
Clock rate, selectable
data rate
Connector
single-ended
50 Ω nominal, AC-coupled
850 mV typ.
divided by n, n=2,4,8,10,16,20
SMA, front Panel
Error Detector
Figure 1: User interface-advanced mode
A differential electrical input is provided on the frontpanel. Data rate is the same as pattern generator.
Pattern Generator
Pattern
The following patterns are supported:
PRBS: 27-1, 215 - 1 , 2 23 - 1 , 2 31-1.
Pattern
The following patterns are supported:
PRBS: 27-1, 215 - 1 , 2 23 - 1 , 2 31-1.
Data pattern: K28.5.
Clock pattern: data rate divide by n, n=2,4,8,10,16,20
The pattern can be individually adjusted for pattern
generator electrical out and optical out.
Error injection
Fixed electrical and optical error inject: Fixed error
ratios of 1 error in 10n bits, n=3,4,5,6,7,8,9.
Single error injection. Separate error ratios can
be adjusted for pattern generator electrical out and
optical out.
In/In
Input type
Max. input amplitude
Impedance
Sensitivity
Clocking mode
Synchronization
Connector
differential, AC-coupled
1 Vpp, single-ended
2 Vpp, differential
100 Ω nominal
< 50 mV
internal CDR
automatically on level, polarity,
phase, bit and pattern
SMA, front panel
Pattern generator electrical out
A differential electrical output is provided on the
front-panel.
2
N5980A 3.125 Gb/s Serial BERT Data Sheet
Measured parameters (here: splitted in two pictures)
Remote or other
programm control
Tx... output mask test (on DCA and Powermeter)
(ER, OMA, average power, Tj, partly Tr/f)
SCPI over LAN
Rx ... sensitivity (via attentuated Tx) BER over average
power level and (partly) at three temperatures
GUI running on
external PC
+ independent patterns for Tx and Rx tests possible
Optical multimeter
sensitivity
Att PM
Test-board
USB 2.0
SFP-module
Rx
Tx
10%
DCA
(mask test)
Differential electrical
Trigger
90%
optical
Concurrent test of Tx- and
Rx- side of a SFP-module
Optical multimeter
sensitivity
Att PM
Test-board
SFP-module
Rx
Tx
‘golden’ SFP-module
90%
DCA
Differential electrical
(mask test)
optical
Figure 2: Typical manufacturing tests of SFP-modules
General
General
Power supply
Power consumption
Operating temperature
Operating altitude
Storage temperature
Interface
Language
Dimensions (W x H x D)
Bench top (with bumper)
Rack mount (without bumper)
Weight
Safety designed to
EMC tested to
Warm-up time
Warranty
100 V to 240 V ~, 50-60 Hz
50 VA max
0°C to 55°C
up to 2000 m
-30°C to 70°C
USB 2.0 standard
SCPI syntax
228 x 59 x 246 mm
1/2 * 19” width, 1U height
(213 x 44.5 x 245 mm)
1660 g
IEC61010-1
IEC61326
10 min
1 year standard
Figure 3: Typical eye diagram at 2.66 Gb/s
N5980A 3.125 Gb/s Serial BERT Data Sheet
3
Ordering Information
www.agilent.com
Accessories Included
User Software and Demo CD includes:
• Application Presentation
• Data Sheet
• User documentation (User Guide with
programming reference)
• User Software including offline demonstration
Local power cord, USB cable, SFP loopback connector
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© Agilent Technologies, Inc. 2006
Printed in the USA, May 18th, 2006
5989-4752EN