02 | Keysight | 81133A and 81134A, 3.35 GHz Pulse Pattern Generators - Data Sheet

81133A and 81134A

3.35 GHz Pulse Pattern Generators

The need for pulse and pattern generation is fundamental to

digital device characterization tasks. The ability to emulate the

pulse and pattern conditions to which the device will encounter

in its final application, is essential. This emulation should include

both typical and worst case conditions. Accurate emulation

requires superlative signal integrity and timing performance

along with full control over parameters that allow specific worst

case testing.

Setting Standards

The Keysight Technologies, Inc. 81133A and 81134A 3.35 GHz

Pulse Pattern Generators provide programmable pulse periods

from 15 MHz (66.6 ns) to 3.35 GHz (298.5 ps) on all channels.

With frequency ranges this fast, the transition time performance

becomes critical; the Keysight 81133A and 81134A perform at

less than 60 ps transition. The Delay Control Input and the Vari-

able Crossover Point functionalities allow fast and easy Signal

Integrity measurements, including emulation of real world signals

by adding jitter to clock or data signals or by distorting the ‘eye’

for eye diagram measurements.

Key Features

– Pulse, Data Pattern and PRBS generation from 15 MHz

up to 3.35 GHz

– Data formats NRZ, RZ and R1

– 12 Mbit pattern memory per channel

– Low jitter, high accuracy

– Fast transition times

– PRBS generation from 25 -1…231 -1

– Delay control input for pre-defined jitter input

– Jitter emulation up to ± 250 ps

– Easy-to-use graphical user interface

– 50 mV to 2 Vpp output amplitude

– Differential outputs

– 1 or 2 channels

Connectors

Front panel connectors

All signal outputs and inputs are accessible at the front panel.

These are:

– 2 (or 4) output connectors for the 1 (or 2) differential

channel(s)

– Trigger output

– Clock input

– Start input

– 1 (or 2) delay control input(s) for the 1 (or 2) channel(s)

Rear panel connectors

Remote programming interfaces: GPIB, LAN, USB 2.0 (see also

‘Additional Features’)

Clock Source

Selecting the clock source determines the origin of the time base.

All other timing parameters are derived from it.

There are two choices:

Internal

The Clock is derived from the internal oscillator.

External

The Clock is derived from the external input. The ext. frequency is

measured once and is thereafter used to maintain the calculated

frequency dependant values including the pulse width or phase if

set to duty cycle mode or phase mode respectively.

External 10 MHz reference

A 10 MHz reference clock can be applied to the clock input. This

clock is used as a reference for all timing parameters.

Direct mode (direct internal/ direct external)

The direct modes allow changes of frequency without dropouts

in the range of 1:2. This can be used for applications, where drop-

outs would make a measurement impossible (e.g.: PLL frequency

sweep, micro processor clock sweep). In both direct modes, the

delay and deskew of all channels is set to zero (deskewed at the

connectors) and can’t be changed. Square mode, data mode

(NRZ only) and PRBS mode (NRZ only) are available. In ‘Direct

External’ mode the PLL is bypassed and the instrument exactly

follows the externally attached frequency.