Data Sheet
20MHz DDS Sweep Function Generator
Model 4040DDS
Model 4040DDS
FREQUENCY CHARACTERISTICS (STANDARD WAVEFORMS)
Sine 0.1Hz to 20MHz
Square 0.1Hz to 20MHz
Triangle , Ramp 0.1Hz to 2MHz
Accuracy 0.01 % (100 ppm)
Resolution 4 digits or 10mHz
OUTPUT CHARACTERISTICS
Amplitude Range 10mV to 10Vp-p into 50
Resolution 3 digits (1000 counts)
Amplitude Accuracy 2% 20mV of the programmed output from 1.01V- 10V
Flatness 0.5 dB at 1MHz, 1 dB to 20 MHz
Offset Range 4.5V into 50 , depending on the Amplitude setting
Offset Resolution 10 mV with 3 digits resolution
Offset Accuracy 2% 10mV into 50
Output Impedance 50
Output Protection The instrument output is protected against short circuit
or accidental voltage practically available in electronic
laboratories, applied to the main output connector
The model 4040DDS is a low cost, full featured Direct Digital
WAVEFORM CHARACTERISTICS
Synthesis (DDS) generator with a menu-driven front panel
Harmonic Distortion 0-20KHz, -50 dBc, 20KHz-100KHz, -45dBc
interface that includes a large, easy-to-read graphical LCD 100KHz-1MHz, -40 dBc, 1MHz-20MHz, -30 dBc
Spurious DC-1MHz, <-55 dBc
display. Waveform parameter changes and data entry can be
Square Rise/Fall Time < 20ns (10% to 90%) at full amplitude into 50
made using the front panel rotary knob. The unit generates
Variable Duty Cycle 20% to 80% to 2MHz for Square and 10%-90% for Triangle
Symmetry at 50% < 1 %
superb quality waveforms with high signal precision and stability.
OPERATING MODES
It provides sine & square wave outputs over the frequency range
Continuous Output continuous at programmed parameters.
Triggered Output quiescent until triggered by an internal or
from 0.1 Hz to 20 MHz in one extended range (triangle/ramped
external trigger, then one waveform cycle is
wave outputs to 2 MHz). A full range of triggering capabilities is
generated to programmed parameters, up to 2MHz
available, including internal-external trigger source and gated Gate Same as triggered mode, except waveform is executed for the
duration of the gate signal. The last cycle started is completed.
modes of operation.
Trigger Source Trigger source may be internal, external or manual.
Internal trigger rate 10us to 10s.
MODULATION CHARACTERISTICS
20MHz Frequency Range (sine & square only)
Amplitude Modulation
Sine, Square & Triangle
Internal Sine signal of 1000Hz
Variable modulation from 0% to 100% in 1% steps
Modulation in both AM & FM
External 5 Vp-p for 100% modulation, 10K
input impedance, DC to 20KHz bandwidth.
Lin or Log Sweep Function
Frequency Modulation
Adjustable Duty Cycle
Internal Sine signal of 1000Hz
External 5 Vp-p for 100% deviation, 10K input impedance,
Adjustable DC Offset
DC to 20KHz bandwidth.
SWEEP CHARACTERISTICS
Bright Informative LCD
Sweep Shape Linear and Logarithmic, up or down
Sweep Time 10 ms to 50 s.
INPUTS AND OUTPUTS
Trigger In TTL compatible. Max. rate 2MHz. Minimum width 50ns.
Sync Out TTL pulse at programmed frequency, 50 source impedance.
Modulation IN 5 Vp-p for 100% modulation . 10K input impedance.
Dc to >20KHz minimum bandwidth.
GENERAL
Dimensions (WxHxD) 8.4 x 3.5 x 8.3 (213mm x 88mm x 210mm)
Weight 5.5 lbs. (2.5 Kg)
Power 90V-264V, 30 VA max
Temperature
Operating 0C to +50C,
Non-operating -10C to +70C
EMC According to EN55011 for radiated and conducted emissions.
Electrical Discharge Immunity According to EN55082
Safety Specifications According to EN61010
Three Year Warranty
Supplied Accessories: Manual and Power Cord
Optional Accessories: TLFG Kit
Technical data subject to change
www.bk precision.com
B&K Precision Corp. 2012
v032212 Tel.: 714.921.9095X-ON Electronics
Largest Supplier of Electrical and Electronic Components
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