Agilent 81140A Series
81141A / 81142A
Serial Pulse Data Generators
7 GHz and 13.5 GHz
Data Sheet
The smart way to measure – Quality Stimulus Solution
Delivering the confidence you demand for your signal
integrity in the next speed class
Version 1.1
Key Benefits
• Pulse, Data Pattern and PRBS generation up to 7 GHz and 13.5 GHz
• Differential outputs for data, clock and trigger
• Trigger and external clock input
• Fastest transition times < 20 ps
• Data formats: NRZ, R1 and RZ
• Low jitter, high accuracy signals with Jitter < 1ps RMS
• 1GHz jitter modulation bandwidth
• PRBS generation from 2
5
-
1 to 231-
1
• 32 Mbit Memory for long, “real world” patterns
• Sequencing and looping for protocol based data
• Event trigger capabilities
• Subrate clock for easy generation of reference clock
All timing parameters are measured at ECL levels.
Table 1: 81140A series specifications at a glance.
Frequency 150 MHz to 7 GHz / 13.5 GHz
Output channels Single channel data and clock,
differential or single ended
Triggering Aux In (Trigger In) and Trigger Out
Data formats RZ, R1, NRZ
Duty cycle 70ps to period
-
70ps
35ps to period -35ps (Pulse for 81142A only)
Clock/data delay range ±0.75ns with a 100 fs resolution
Delay modulation range
-
100 ps to 100 ps
Transition times (10/90) < 25 ps
Jitter (clock mode) 1ps rms typical
Jitter (data mode) 9 ps pptypical
Jitter modulation bandwidth DC - 1 GHz
Data output amplitude/resolution 0.1V to 1.8V with 5 mV resolution
Output voltage window
-
2V to 3V
Sequencing and looping 1 level of up to 4 blocks
Memory 32 Mbit
Channel Output Connector 2.4 mm
Interfaces GPIB, LAN, parallel printer, VGA,
4 x USB 2.0, 1x USB 1.1
2 Agilent 81141A 7 GHz serial Pulse Data Generator Data Sheet
81140A Series Serial Pulse Data Generator at a glance
Sub Clock Out:
Provides a reference clock
at subrates of the data rate.
Trigger Out:
Lets you provide a trigger for
another device
AUX In:
Lets you connect a signal to switch between Pattern A and B, or to
suppress the output signal
Error Add:
Allows you connect an external trigger
to insert a single bit error in the output
Data Out:
Stimulus signal compatible with a wide variety
of logic families and signals RZ, R1 …
Clock Out:
Frequency reference, can be set
according to the logic family
Clock In:
Offers you to connect a clock signal from another device
Delay Control In:
Lets you use an external
signal to control jitter
in the data output.
Agilent 81141A 7 GHz serial Pulse Data Generator Data Sheet 3
Table 2: Key requirements for physical layer testing (Addressed by 81141/2A)
High-Speed Serial Buses
PCI Express I, II S-ATA II, III Fiber Channel …
Up to 5 GHz Up to 6 GHz 4 GHz
Low voltage differential signal
Receiver tests
• Jitter tolerance
• Receiver sensitivity
• Timing skew
• PLL loop bandwidth
500 MHz jitter modulation bandwidth
Sequencing for protocol data
Multiple pattern generation for protocol-like data
High-quality waveform for ultimate characterization
Keeping pace with technology and increasing speeds –
Are you ready for the next generation of applications?
The transfer of large amounts of data and spiraling transmission rates, needed for services
such as video on demand and to ensure ever
increasing Internet bandwidth, are driving speed
increases in infrastructure and components.
Signals break through one performance barrier
after another. As electrical signals start competing with laser-generated ones, it is no longer
necessary to convert to optical to reach high
speeds.
High-speed protocols rely on a solid physical
layer and dependable signal integrity. The next
generations of protocols such as PCI Express,
which in its second-generation doubles both
clock rate and data throughput, raise the standards for jitter and sensitivity. Validation and
Applications in education and research Ultra Wide Band Radio
e.g. control of particle accelerators
Fast transition times
Ultra-small pulses
Trigger capabilities
characterization become critical in ensur-ing
effects such as reflection and crosstalk are kept
within allowable limits.
As a developer you strive to keep pace with
faster and more complex bus standards.
Accelerated development cycles make proprietary test solutions less attractive. Instead you
need standard instruments you can rely on to
accomplish the job you need to get done. There
can be no compromise on data quality, timing,
synchronization and control.
4 Agilent 81141A 7 GHz serial Pulse Data Generator Data Sheet
Agilents Offering of Leading Product Ranges
Agilent provides the most comprehensive po rtfolio of digital stimulus solutions to generate current and emerging digital waveforms and data
signals. Agilent instruments cover a frequency
range from 1 mHz to 13 GHz, with pulse pattern and data generators and output amplitudes
from 50 mV to 100V.
The Agilent 81140A series serial Pulse Data
Generator provides the smart way to measure –
delivering the confidence you demand for your
signal integrity in the next speed class.
• High-speed frequency up to 13 GHz
• High-quality waveforms with best transition
times and lowest intrinsic jitter
• High flexibility data streams for stress test
and application in education and research
•Jitter insertion
•Trigger capability
•Sequencing and looping
•Versatile pattern generation
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