DS345 Function / Arbitrary Waveform Generator0 pages

Synthesized Function Generators
DS345 — 30 MHz function and arbitrary waveform generator

DS345 Function/Arb Generator
· 1 µHz to 30.2 MHz frequency range
· 1 µHz frequency resolution
· Sine, square, ramp, triangle & noise
· Phase-continuous frequency sweeps
· AM, FM, burst and phase modulation
· 16,300 point arbitrary waveforms
· 10 MHz reference input
· RS-232 and GPIB interfaces (opt.)

· DS345 ... $1595 (U.S. list)

Stanford Research Systemstt
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The DS345 is a full-featured 30 MHz synthesized function
generator that uses an innovative Direct Digital Synthesis
(DDS) architecture. It generates many standard waveforms
with excellent frequency resolution (1 µHz), and has versatile
modulation capabilities including AM, FM, Burst, PM and
frequency sweeps. It also generates arbitrary waveforms with
a fast 40 Msamples/s update rate.
Functions and Outputs
The DS345 generates sine waves and square waves at
frequencies up to 30.2 MHz, and triangle and ramp waveforms
up to 100 kHz. The frequency resolution for all functions is
1 µHz. In addition to the standard waveforms, the unit also
provides a wideband (10 MHz) white noise source.
Both the function output and a TTL SYNC output are
available through floating, front-panel BNC connectors. Both
outputs have 50 Ω output impedances and may be floated
up to ±40 V relative to earth ground. The amplitude of all
function outputs is adjustable from 10 mVpp to 10 Vpp with
3-digit resolution, and can be displayed in Vp, Vpp, Vrms or
dBm. In addition, standard TTL and ECL output levels can
be selected.
Additional useful connectors are provided on the rear panel.
A trigger input is used to trigger arbitrary waveforms,
modulation patterns, sweeps and bursts, while a TTL trigger
output is provided to allow synchronization of external

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