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nstek GFG-8219A 3MHz Function Generator with Counter Sweep AM/FM
The GFG-8200A product family offers a complete solution in generating signals at the 3MHz/5MHz ranges. All models are embedded with standard functions such as TTL/CMOS/Ramp output, External Voltage Controlled Frequency (VCF), and built-in 6-digit counter (except for GFG-8215A).
Further versatility of Logarithmic and Linear sweep is added into GFG-8255A/8219A/8217A, while GCV output feature and AM/FM modulation are available in GFG-8255A/8219A. All these integrated functions and user-friendly operations of the GFG-8200A series are made to accommodate the applications in audio response testing, vibration testing, servo system evaluation, ultra sound application, etc.
Switch selector < 35mVrms (5Hz ~ 100MHz)
MAIN
Frequency Range
Amplitude
>10Vpp (into 50Ω load)
Impedance
50Ω±10%
Attenuator
-20dB±1dBx2
DC Offset
<-5V ~ >5V (into 50Ω load)
Duty Control
80% ~ 20%, maximum 1MHz (continuously adjustable)
Display
6 digits LED display
*GFG-8215A does not have a display
Range Accuracy
±5%+1Hz (at 3 positions) *only for GFG-8215A
SINE WAVE
Distortion
THD (Total Harmonic Distortion)
Flatness
< 0.5dB, 300kHz ~ 3MHz
< 1dB, below 5MHz
TRIANGLE WAVE
Linear
> 95%, 100kHz ~ 3MHz
> 95%, 100kHz ~ 5MHz
SQUARE WAVE
Symmetry
Rise or Fall Time
CMOS OUTPUT
Level
4Vpp±1Vpp ~ 14.5Vpp±0.5Vpp adjustable
Rise or Fall Time
< 120nS
TTL OUTPUT
Level
> 3Vpp
Fan Out
20 TTL load
Rise or Fall Time
< 25nS
VCF (Voltage Controlled Frequency)
Input Voltage
0V ~ 10V±1V (100 : 1)
Input Impedance
10kΩ±10%
GCV (Generator Controlled Voltage) (GFG-8219A/8255A)
Output Voltage
Sets the voltage between 0V ~ 2V according to the frequency
SWEEP OPERATION (GFG-8217A/8219A/8255A)
Sweep Selection
Sweep Rate
Maximum 100 : 1, adjustable
Sweep Time
0.5sec ~ 30sec, adjustable
Sweep Mode
Lin/Log switch selector
AMPLITUDE MODULATION (GFG-8219A/8255A)
Depth
0 ~ 100%
MOD. Frequency
400Hz (INT), DC ~ 1MHz(EXT)
Carrier BW
EXT Sensitivity
< 10Vpp for 100% modulation
FREQUENCY MODULATION (GFG-8219A/8255A)
Deviation
0 ~ ±5%
MOD. Frequency
400Hz (INT), DC ~ 20kHz(EXT)
EXT. Sensitivity
< 10Vpp for 10% modulation
FREQUENCY COUNTER (GFG-8216A/8217A/8219A/8250A/8255A)
INT/EXT
Switch selector
Range
Accuracy
Time base accuracy±1 count
Time Base
±20ppm(23° C ± 5° C)after 30 minutes warm up
Resolution
100nHz for 1Hz, 1Hz for 100MHz
Input Impedance
1MΩ // 150pF
Sensitivity
< 45mVrms (100MHz ~ 150MHz)
POWER SOURCE
AC115V/230V±15%, 50 / 60Hz
DIMENSIONS & WEIGHT
Approx. 2.0 kg(GFG-8215A)
Approx. 2.1 kg(GFG-8216A)
Approx. 2.15kg(GFG-8217A)
Approx. 2.2 kg(GFG-8219A)
Approx. 2.3 kg (GFG-8250A)
Approx. 2.4 kg (GFG-8255A)