Specifications
For more product information please visit www.bkprecision.com
41
Function Generators
Model 4040DDS
20MHz DDS Sweep
Function Generator
The model 4040DDS is a low cost, full featured Direct Digital
Synthesis (DDS) generator with a menu-driven front panel
interface that includes a large, easy-to-read graphical LCD
display. Waveform parameter changes and data entry can be
made using the front panel rotary knob. The unit generates
superb quality waveforms with high signal precision and
stability. It provides sine & square wave outputs over the
frequency range from 0.1 Hz to 20 MHz in one extended range
(triangle/ramped wave outputs to 2MHz). A full range of
triggering capabilities is available, including internal-external
trigger source, gated and burst modes of operation.
■ 20MHz Frequency Range (sine & square only)
■ Sine, Square & Triangle
■ Modulation in both AM & FM
■ Lin or Log Sweep Function
■ Adjustable Duty Cycle
■ Adjustable DC Offset
■ Bright Informative LCD
F
F
R
R
E
E
Q
Q
U
U
E
E
N
N
C
C
Y
Y
C
C
H
H
A
A
R
R
A
A
C
C
T
T
E
E
R
R
I
I
S
S
T
T
I
I
C
C
S
S
(
(
S
S
T
T
A
A
N
N
D
D
A
A
R
R
D
D
W
W
A
A
V
V
E
E
F
F
O
O
R
R
M
M
S
S
)
)
Sine 0.1Hz to 20MHz
Square 0.1Hz to 20MHz
T
riangle , Ramp 0.1Hz to 2MHz
A
ccuracy 0.01 % (100 ppm)
Resolution 4 digits or 10mHz
O
O
U
U
T
T
P
P
U
U
T
T
C
C
H
H
A
A
R
R
A
A
C
C
T
T
E
E
R
R
I
I
S
S
T
T
I
I
C
C
S
S
A
mplitude Range 10mV to 10Vp-p into 50Ω
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 50Ω, depending on the Amplitude setting
Offset Resolution 10 mV with 3 digits resolution
Offset Accuracy ± 2% ± 10mV into 50Ω
O
utput Impedance 50Ω
O
utput Protection The instrument output is protected against short circuit
or accidental voltage practically available in electronic
laboratories, applied to the main output connector
W
W
A
A
V
V
E
E
F
F
O
O
R
R
M
M
C
C
H
H
A
A
R
R
A
A
C
C
T
T
E
E
R
R
I
I
S
S
T
T
I
I
C
C
S
S
Harmonic Distortion 0-20KHz, -50 dBc, 20KHz-100KHz, -45dBc
100KHz-1MHz, -40 dBc, 1MHz-20MHz, -30 dBc
Spurious DC-1MHz, <-55 dBc
Square Rise/Fall Time < 20ns (10% to 90%) at full amplitude into 50Ω
Variable Duty Cycle 20% to 80% to 2MHz for Square and 10%-90% for Triangle
Symmetry at 50% < 1 %
OOPPEERRAATTIINNGG MMOODDEESS
Continuous Output continuous at programmed parameters.
Triggered Output quiescent until triggered by an internal or
external trigger, then one waveform cycle is
generated to programmed parameters, up to 2MHz
Gate Same as triggered mode, except waveform is executed
for the duration of the gate signal. The last cycle started is completed.
Trigger Source Trigger source may be internal, external or manual.
Internal trigger rate 10us to 10s.
MMOODDUULLAATTIIOONN CCHHAARRAACCTTEERRIISSTT IICCSS
Amplitude Modulation
Internal Sine signal of 1000Hz
Variable modulation from 0% to 100% in 1% steps
External 5 Vp-p for 100% modulation, 10KΩ
input impedance, DC to 20KHz bandwidth.
Frequency Modulation
Internal Sine signal of 1000Hz
External 5 Vp-p for 100% deviation, 10KΩ input impedance,
DC to 20KHz bandwidth.
SSWWEEEEPP CCHHAARRAA CCTTEERRIISSTTIICCSS
Sweep Shape Linear and Logarithmic, up or down
Sweep Time 10 ms to 50 s.
IINNPPUUTTSS AA NNDD OOUUTTPPUUTTSS
Trigger In TTL compatible. Max. rate 2MHz. Minimum width 50ns.
Sync Out TTL pulse at programmed frequency, 50Ω source impedance.
Modulation IN 5 Vp-p for 100% modulation . 10KΩ input impedance.
Dc to >20KHz minimum bandwidth.
GGEENNEERR AALL
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 0ºC to +50ºC,
Non-operating -10ºC to +70ºC
EMC According to EN55011 for radiated and conducted emissions.
Electrical Discharge Immunity According to EN55082
Safety Specifications According to EN61010
Specifications
model
4
040DDS
Two Year Warranty
SUPPLIED: Manual, Line Cord
OPTIONAL: TLFG Kit
Accessories