Atec Rohde-Schwarz-DS360 - Manual (Page 2)

Waveforms
The DS360 generates clean sine and square waves as well as
a two-tone signal for IMD testing. The two-tone signal is
defined as either two sine waves or a sine and square wave.
Both frequency and amplitude are independently set for the
two waves allowing standard two-tone formats like SMPTE,
DIM and CCIF to be generated. In addition to standard
waveforms, the DS360 outputs white noise, pink noise and
band-limited white noise.
Audio Outputs
All functions and parameters are easily set using the front-
panel keypad and spin knob. A wide variety of amplitude units
including Vrms, Vpp, dBV, dBm and dBrel can be selected.
Front-panel outputs including XLR, BNC and dual banana
jacks assure compatibility with any system. The outputs can
be configured as balanced or unbalanced, with amplitudes
from 20.0
µ Vpp to 80.0 Vpp (balanced), and 10.0 µ Vpp to
40.0 Vpp (unbalanced). Chassis ground and output common
banana jacks are also provided. Rear-panel digital outputs
conform to AES-EBU and SPDIF/EIAJ formats. An XLR jack
is provided for the AES-EBU output, and both fiber optic and
coaxial connectors are provided for the SPDIF/EIAJ output.
Sweeps and Bursts
Unlike single frequency analog sources, the DS360 generates
low-distortion frequency sweeps over its entire frequency
range. Linear and log sweeps are set between 1 mHz and
200 kHz with sweep times between 0.3 ms and 100 s. Sweeps
can be single-shot or repetitive and the instrument can sweep
both up and down in frequency. The DS360 provides
outstanding amplitude flatness (0.5 % up to 20 kHz) during
frequency sweeps and has a TTL level sweep marker output
for synchronizing external equipment.
The DS360 also creates tone bursts of sine and square waves.
The number of ON cycles, repetition rate, and the OFF
amplitude level can all be adjusted. Sweeps and bursts may be
triggered from the internal rate generator or an external
trigger, or they can be externally gated.
Computer Control
The DS360 is designed for benchtop use as well as automated
testing. With standard IEEE-488.2 (GPIB) and RS-232
interfaces, the DS360 is fully programmable  a feature seldom
found in low-distortion sources. All instrument functions can
be controlled or queried through the computer interfaces.
DS360 Low Distortion Function Generator
Stanford Research Systems phone: (408)744-9040
www.thinkSRS.com
DS360 rear panel
0.0 2.00k 4.00k 6.00k 8.00k 10.0k 12.0k 14.0k 16.0k 18.0k 20.0k
-100.0
-105.0
-110.0
-115.0
-120.0
-125.0
-130.0
-135.0
-140.0
-145.0
-150.0
20 100 1k 10k 20k
-110.00
-120.00
-100.00
-90.00
-80.00
-70.00
-60.00
THD vs. Frequency (Hz)
Residual distortion for a 1 kHz, 28 Vrms (balanced) sine
wave after passing through a non-distorting notch filter
to attenuate the fundamental.
THD+N vs. Frequency (Hz)