Tektronix CFG280 0.1Hz-11MHz 函數信號發生器
詳細資料：
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 * Input for External Sine Wave
* Internal or External Frequency Sweep
* One Year Warranty
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.
CFG253
CFG280
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 *, 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
CFG280 Counter Specifications
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）
