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Function Generators
CFG253 • CFG280
Features & Benefits
CFG253
- 0.03 Hz to 3 MHz
- Square, Triangle and Sine Waves; TTL Output
- 20 dB Attenuator
- Internal or External Frequency Sweep
- Variable Duty Cycle
- Variable Symmetry (20 to 80%)
- One Year Warranty
CFG280
- 0.1 Hz to 11 MHz (Calibrated)
- 0.01 Hz to 11 MHz (Uncalibrated)
- 1 Hz to 100 MHz Counter
- Square, Triangle and Sine Waves; TTL Output
- 20 dB Attenuator
- External Gate Input
- VCF (FM) Input
- AM 0 to 100% Input for External Sine Wave
- Internal or External Frequency Sweep
- One Year Warranty
Applications
- Product Design
- Training
- Manufacturing Production Test
- Field Repair
- Bench Calibration and Repair
- Laboratory and Research
- Education
CFG253
Function generators produce sine, square and triangle waves and TTL signals for testing amplifiers, filters and digital circuits. Sweep function can be controlled internally or with an external signal. Duty cycle, DC offset, sweep rate, sweep width and amplitude are all operator controlled. The CFG253 has output bandwidth of 0.03 Hz to 3 MHz.
CFG280 11 MHz Function Generator with Counter
The CFG280 combines an 11 MHz function generator with a 1 Hz to 100 MHz frequency counter. The on-board counter allows the operator to set the frequency output of the function generator precisely. This versatile instrument conserves both bench space and budget.
Characteristics
Key Specifications
|
CFG253 |
CFG280 |
---|---|---|
CFG280 Counter Specifications |
||
Waveform outputs |
Square wave, sine wave, triangle wave, TTL pulse, sweep functions for all outputs |
Square wave, sine wave, triangle wave, TTL pulse, sweep functions for all outputs |
Ranges |
1.0 Hz to 3.0 MHz in 7 ranges |
0.1 Hz (calibrated) to 11 MHz in 8 ranges |
Frequency multiplier |
Variable from 0.3 to 3.0 times the selected frequency range |
Variable from 0.1 to 1 (uncalibrated) 1 to 11 (calibrated) |
Dial accuracy |
±5% of full scale |
±5% of full scale from 0.1 Hz to 10 MHz |
Sine wave distortion |
<1% (10 Hz to 100 kHz) |
<1% (10 Hz to 100 kHz), -30 dB at all other frequencies |
Triangle wave linearity |
20 Hz to 200 kHz: ≥99%; 200 kHz to 3 MHz: ≥97% |
0.1 Hz to 110 kHz: ≥99%; 110 kHz to 1 MHz: ≥97%; 1 MHz to 11 MHz: ≥95% |
Square wave response |
≤100 ns rise/fall time, maximum output into 50 Ω load |
≤25 ns rise/fall time, maximum output into 50 Ω load |
Main output amplitude |
0 to 20 Vp-p |
0 to 20 Vp-p |
Attenuator |
20 dB |
20 dB |
SYNC/TTL output |
TTL output level, rise <25 ns (20 TTL load) ≥3 V pk |
<25 ns rise/fall time, maximum output into 50 Ω load |
Main output impedance |
50 Ω ±10% |
50 Ω ±10% |
DC offset (continuously variable) |
±10 V minimum open circuit; ±5 V minimum into 50 Ω load |
±10 V minimum open circuit; ±5 V minimum into 50 Ω load |
Symmetry/duty cycle |
5 to 1 minimum symmetry change |
95/5 fixed (pulse and ramp) |
Internal variable sweep rate |
0.5 Hz to 50 Hz |
0.5 Hz to 50 Hz |
External voltage-controlled variable sweep range (10 kΩ Input) |
100:1 minimum for 0 to +10 VDC input with frequency control set at maximum |
100:1 minimum for 0 to ±10 VDC input with frequency control set at 0.1 or 11 |
VCF (FM) Input |
|
±10 V input shifts frequency ≥100:1 up or down with dial set at 0.1 or 11 respectively |
AM |
|
0 to 100%, DBSC, external sine wave only |
Warranty |
One year |
One year |
Safety |
EN61010-1, UL1244, CSA231 |
EN61010-1, UL1244, CSA231 |
EMC |
Meets 89/336/EEC |
Meets 89/336/EEC |
Frequency range (AC coupled) |
|
1 Hz to 100 MHz |
Sensitivity |
|
30 mVRMS from 1 Hz to 50 MHz; 50 mVRMS from 50 MHz to 100 MHz |
Period range/resolution |
|
1 ms to 60 s/1 ms |
Crystal frequency |
|
10 MHz |
Time base stability |
|
±0.001% (±10 ppm) from 0 ° to 40 °C |
Frequency accuracy |
|
±(time base error + 1 count) |
Period accuracy |
|
±(time base error + 1 count + trigger error) |
Ordering Information
CFG253
3 MHz function generator.
Includes: Operator's manual, US power cord, one year warranty.
CFG280
11 MHz function generator with 100 MHz counter.
Includes: Operator's manual, US power cord, one year warranty.