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Features
1 high frequency resolution: 0.01Hz
2 high frequency accuracy: ± 20ppm
3 low distortion: <1%
4 square wave duty cycle 1%~99% precision adjustable
5 triangle wave modulation duty cycle can output two sawtooth wave
6 variable DC voltage control
7 external frequency measurement
8 preset frequency storage, call function
9 interface function signal output (main signal output) TTL output external count input

Index
1 The main output waveform sine wave, triangle wave, sawtooth wave, square wave 
2 The maximum output amplitude 10Vpp (no load)
3 Output impedance: 50Ω±10%
4 DC offset:±2.5V (no load)
5 Duty ratio range: 1%-99% (Fang Bo)
6 Display LCD1602
7 The output frequency range:

Sine wave 0.01Hz-2MHz (5MHz, 8MHz)
Square wave 0.01Hz- 1MHz (effective range)
Triangle wave 0.01Hz -1MHz (effective range)
Sawtooth wave 0.01Hz ~ 1MHz (effective range)
8 Resolution 0.01Hz
9 Frequency stability: ±1 x 10 - 6
10 Frequency error is plus or minus: ±5 x 10-6
11 Sine wave distortion degree <1% (reference frequency 1kHz)
Triangular wave linear degree:

≥ 98%, 0.01Hz~100kHz
≥ 95%, 100kHz~1MHz
12 Square wave rise and fall time <30ns
13 TTL output TTL level greater than 3 Vp-p
14 Load capacity: 20TTL load

External measuring function
1 Frequency range: 1Hz-60MHz
2 The amplitude of the signal: 0.5Vpp-20Vpp
3 Stored and transferred to storage and out: with 10 groups parameters function.

Shipping list
DDS signal generator * 1
DC5V Power supply * 1