Search
Home > Products > Test & Measurement Instruments > DS360

Function Generator DS360 ... from $2895
DS360 200 kHz low distortion generator
(Click to enlarge)
DS360 Function Generator
  • 10 mHz to 200 kHz range
  • <-100 dBc distortion (to 20 kHz)
  • Sine, square, white & pink noise
  • 20 µVpp to 40 Vpp output range
  • Linear and log sweeps
  • 25 ppm frequency accuracy
  • 10 MHz reference input
  • Balanced & unbalanced outputs
  • RS-232 and GPIB
The performance of a low distortion analog source and the precision of direct digital synthesis (DDS) is combined in the DS360. With less than 0.001 % total harmonic distortion (THD), 25 ppm frequency accuracy, and a broad range of features including sweeps and bursts, the DS360 is the ideal source for audio frequency applications.
   Related Products

> DS345 Function/Arb Generator
> DS340 Function/Arb Generator
Downloads

Datasheet
User's Manual
Prices

DS360 Low Distortion Function Generator

The performance of a low distortion analog source and the precision of direct digital synthesis (DDS) is combined in the DS360. With less than 0.001 % total harmonic distortion (THD), 25 ppm frequency accuracy, and a broad range of features including sweeps and bursts, the DS360 is the ideal source for audio frequency applications.

Ultra-Low Distortion and Noise

Unlike conventional RC oscillators, the DS360 uses digital signal processing and a precision 20-bit D/A converter to provide better than -100 dB distortion over the audio frequency range. With its DDS architecture the DS360 has the features and flexibility of a contemporary synthesized function generator. Careful shielding and board layout keep the output noise to a minimum, making the DS360 the instrument of choice for audio research and development, manufacturing, and automated testing.

Frequency Stability

Low-distortion analog sources have impressive THD specifications but suffer with poor frequency accuracy and resolution. The DS360 delivers 0.0025 % frequency accuracy over its entire frequency range. It has 6-digit frequency resolution from 1 mHz to 200 kHz, and a steady 25 ppm frequency stability. You can actually dial in 123,456 Hz from the front panel and have it mean something!

Waveforms

The DS360 generates clean sine waves 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 wave and a 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 µVpp to 80.0 Vpp (balanced), and 10.0 µVpp to 40.0 Vpp (unbalanced). Chassis ground and output common banana jacks are also provided.

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 10 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 waves 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 computer programmable—a feature seldom found in low-distortion sources. All instrument functions can be controlled or queried through the computer interfaces.

 

 

 

Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com

DS360 Low Distortion Function Generator
Sine
THD (1 Vrms unbalanced, 2 Vrms balanced)
     (<5 kHz) -110 dB (typ.), -106 dB (max.)
     (5 to 20 kHz) -104 dB (typ.), -100 dB (max.)
     (20 to 40 kHz) -100 dB (typ.), -96 dB (max.)
     (40 to 100 kHz) -90 dB (typ.), -85 dB (max.)
     (100 to 200 kHz) -76 dB (typ.), -68 dB (max.)
THD (10 Vrms unbalanced, 20 Vrms balanced)
     (<5.0 kHz) -109 dB (typ.), -105 dB (max.)
     (5 to 20 kHz) -103 dB (typ.), -99 dB (max.)
     (20 to 40 kHz) -98 dB (typ.), -93 dB (max.)
     (40 to 100 kHz) -88 dB (typ.), -83 dB (max.)
     (100 to 200 kHz) -76 dB (typ.), -68 dB (max.)
Square
Frequency range 0.01 Hz to 200 kHz
Rise time 1.3 µs
Even harmonics < -60 dBc (to 20 kHz)
White Noise
Bandwidth DC to 200 kHz
Flatness <1.0 dB, 1 Hz to 100 kHz
Crest factor 11 dB
Pink Noise
Bandwidth 10 Hz to 200 kHz
Flatness < 3.0 dB, 20 Hz to 20 kHz (measured using 1/3 octave analysis)
Crest factor 12 dB
Bandwidth Limited Noise
Bandwidth 100 Hz, 200 Hz, 400 Hz, 800 Hz, 1.6 kHz, 3.2 kHz, 6.4 kHz, 12.8 kHz, 25.6 kHz, 51.2 kHz, 102.4 kHz
Center frequency 0 Hz to 200.0 kHz (200 Hz increments)
Flatness (in band) <1.0 dB
Crest factor
     Baseband 12 dB (0 Hz center frequency)
     Non-baseband 15 dB
Two-Tone
Type Sine-sine, sine-square
Sine frequency 0.01 Hz to 200 kHz
Square frequency 0.1 Hz to 5 kHz
Square resolution 2 digits
SFDR >90 dB
Sine or Square Burst
On cycles 1/2, 1 to 65534 cycles
Repetition rate 1 to 65535 cycles
Triggering Internal, external, single-shot, externally gated
Off level 0.0 % to 100.0 % (of on level)
Off resolution 0.1 %
Max. off attenuation -90 dBc (1 kHz)
-70 dBc (10 kHz)
-50 dBc (100 kHz)
White or Pink Noise Burst
On time 10 µs to 599.9 s
Repetition time 20 µs to 600 s
Triggering Internal, external, single-shot, externally gated
Off level 0.0 % to 100.0 % (of on level)
Resolution 0.1 %
Sine or Square Sweep
Type Linear or logarithmic
Range 0.01 Hz to 200.000 kHz
Rate 0.1 Hz to 3.1 kHz
Resolution 2 digits
Flatness ±0.1 dB (1 %)
Frequency
Resolution 6 digits or 10 mHz (whichever is greater)
Accuracy 25 ppm (0.0025 %) + 4 mHz (20 °C to 40 °C)
Amplitude
Unbalanced outputs 5.0 µVpp to 14.4 Vpp (50 Ω load)
5.0 µVpp to 20.0 Vpp (600 Ω load)
10.0 µVpp to 40.0 Vpp (Hi-Z load)
Balanced outputs 10 µVpp to 28.8 Vpp (50 Ω load)
10 µVpp to 28.8 Vpp (150 Ω load)
10 µVpp to 40.0 Vpp (600 Ω load)
20 µVpp to 80.0 Vpp (Hi-Z load)
Resolution 4 digits or 1 µV, whichever is greater (Vpp or Vrms), 0.1 dB (dBm or dBV)
Accuracy
     Sine, Square, 2-Tone ±0.1 dB (1 %)
     White Noise ±0.175 dB (2 %)
     Pink Noise ±0.35 dB (4 %)
Broadband Noise (for a 1 kHz sine wave into a high impedance, at freq.> 1 kHz)
<12.6 mVpp 
12.6 mVpp to 126 mVpp
126 mVpp to 1.26 Vpp
1.26 Vpp to 10 Vpp
10 Vpp to 40 Vpp
<4 nV/√Hz
<7.5 nV/√Hz
<15 nV/√Hz
<100 nV/√Hz
<500 nV/√Hz
Offset
Unbalanced output 0 to ±7.4 VDC (50 Ω load)
0 to ±10.0 VDC (600 Ω load)
0 to ±20.0 VDC (Hi-Z load)
Balanced output Not active
Resolution 3 digits
Accuracy (all except pink noise)
1 % ± 25 mV (Vp+offset > 0.63 V)
1 % ± 2.5 mV (0.63 V > Vp+offset > 0.063 V)
1 % ± 250 µV (63 mV > Vp+offset > 6.3 mV)
1 % ± 50 µV (Vp+offset < 6.3 mV)

(pink noise)
1 % ± 200 mV (Vp+offset > 0.63 V)
1 % ± 20 mV (0.63 V > Vp+offset > 0.063 V)
1 % ± 2 mV (63 mV > Vp+offset > 6.3 mV)
1 % ± 200 µV (Vp+offset < 6.3 mV)
Outputs
Configuration Balanced and unbalanced
Connectors Floating BNCs, banana plugs and XLR jack
Source impedance
     Balanced 50 Ω ± 3 %
150 Ω± 2 %
600 Ω ± 1 %
Hi-Z (50 Ω ± 3 %)
     Unbalanced 50 Ω ± 3 %
600 Ω ± 1 %
Hi-Z (25 Ω ± 1 Ω)
Floating voltage ±40 VDC (max.)
10 MHz Reference Input (Opt. 03)
Requirements Sine or TTL, 0.4 to 7 Vpp, 10 MHz ± 50 ppm
Stability
     Internal ±25 ppm
     External Same as stability of ext. reference)
Indicators External reference detected, Locked
Other Outputs
Sync TTL level (same frequency and phase as output)
Burst out TTL pulse marks burst (TTL high for ON time)
Trigger/gate in TTL pulse starts sweep or burst TTL high activates gated burst
Sweep TTL pulse marks beginning of sweep
General
Computer interfaces GPIB and RS-232. All instrument functions can be controlled.
Size 17" × 3.5" × 16.25" (WHL)
Weight 17 lbs.
Power 50 W, 100/120/220/240 VAC, 50/60 Hz
Warranty One year parts and labor on defects in materials and workmanship
 
 
 
 
Phone: (408)744-9040 • Fax: (408)744-9049 • email: info@thinkSRS.comwww.thinkSRS.com