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| 23rd November 2008
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Function Generator
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DDS Function and sweep generator
DDS Function and sweep generator
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This series of function generators uses Direct Digital Synthesis (DDS) combined with Field-Programmable Gate Array (FPGA) technology to give a versatile range of high quality yet affordable test equipment.
DDS uses a single source fixed frequency to digitally create arbitrary waveforms and frequencies
Sine, square and triangle wave generation
Frequency range from 0.1Hz up to 4, 7 or 10MHz
9 digit LED display
High frequency accuracy
High frequency stability
High frequency resolution
Low distortion sine wave generation
Front panel setting save/recall with 10 groups of setting memories
Built-in 6 digit, 150MHz, high resolution frequency counter (
85-2154/2155/2156
only)
Lin/log mode sweep generator (
85-2154/2155/2156
only)
Int/ext AM/FM modulation (
85-2154/2155/2156
only)
Supplied with instruction manual, power lead and BNC/croc. clip test lead
GW Instek SFG series
View full technical specification
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Order Here
Exc. Vat
Inc. Vat
Unit of Sale
Each
Description
Order Code
Price
Qty
FUNCTION GENERATOR 4 MHZ (RE)
85-2151
93.00
85-2151 Call 01206751166 for availability
1+
3+
10+
FUNCTION GENERATOR 7 MHZ (RE)
85-2152
229.00
217.00
206.00
FUNCTION GENERATOR 10 MHZ (RE)
85-2153
258.00
244.00
232.00
FUNCTION GENERATOR 4 MHZ WITH SWEEP (RE)
85-2154
296.25
280.00
266.25
FUNCTION GENERATOR 7 MHZ WITH SWEEP (RE)
85-2155
265.00
249.00
237.00
FUNCTION GENERATOR 10 MHZ WITH SWEEP RE
85-2156
297.00
281.00
268.00
85-2156 Call 01206751166 for availability
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Technical Specification
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Frequency range
Order code
Manufacturers part number
Sine/square wave
0.1Hz ~ 4MHz
85-2151
SFG-2004
85-2154
SFG-2104
0.1Hz ~ 7MHz
85-2152
SFG-2007
85-2155
SFG-2107
0.1Hz ~ 10MHz
85-2153
SFG-2010
85-2156
SFG-2110
Triangle wave
0.1Hz ~ 1MHz
Main
Resolution
0.1Hz
Stability
±20ppm
Accuracy
±20ppm
Aging
±5ppm/year
Output functions
Sine, square, triangle
Amplitude
10V p-p (into 50Ω load)
Flatness
±0.3dB
0.1Hz ~ 1MHz
(sinewave relative
±0.5dB
1MHz ~ 4MHz
to 1kHz)
±2dB
4MHz ~ 10MHz
Impedance
50Ω ±10%
Attenuator
–20dB ±1dB x2DC offset
–5V ~ >+5V (into 50Ω load)
Duty control
Range
20% to 80% below 1MHz (square wave only)
Resolution
1%
Sine wave
Harmonic distortion
–55dBc
0.1Hz ~ 200kHz
–40dBc
0.2MHz ~ 4MHz
–30dBc
4MHz ~ 10MHz
Triangle wave
Linear
>= 98%
0.1Hz ~ 100kHz
>= 95%
100kHz ~ 1MHz
Square wave
Symmetry
±1% of period +4ns to 0.1Hz ~ 100kHz;
rise or fall time =25ns at maximum output (into 50Ω load)
CMOS output
Level
4V p-p ±1V p-p ~ 14.5V p-p ±0.5V p-p adjustable;
rise or fall time =120ns
TTL output
Level
>=3V p-p; fan out; 20 TTL load; rise or fall time =25ns
Sweep operation
Sweep/rate
100:1 ratio max., adjustable
Sweep/time
0.5s ~ 30s adjustable
Sweep/mode
Lin/log switch selectable
Amplitude modulation
Depth & mod. frequency
0 ~ 100%; 400Hz (INT), DC ~ 1MHz (EXT)
Carrier bandwidth
100Hz ~ 5MHz (-3dB)
EXT sensitivity
=10V p-p for 100% modulation
Frequency modulation
Deviation & mod. frequency
0 ~ 5%; 400Hz (INT), 1kHz (EXT)
EXT sensitivity
=10V p-p for 10% modulation
Frequency counter
Range
5Hz ~ 150MHz
Accuracy
Time base accuracy ±1 count
Time base
±20ppm (23°C ±5°C) after 30 mins warm-up
Resolution
10nHz 1Hz, 0.1Hz 100MHz
Input impedance
1MΩ/150pF
Sensitivity
=35mV rms (5Hz ~ 100MHz)
=45MHz rms (100MHz ~ 150MHz)
Power source
115/230V ±15%, 50/60Hz
Dimensions w x h x d (mm)
107 x 266 x 293
Weight (kg)
3.1 (3.2 for sweep generators)
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