中环科仪
采用 DDS 技术，双路独立输出
Adopt Direct Digital Frequency Synthesis technology with dual independent output
3.5 寸 TFT 显示，中/英文界面显示
3.5 inch TFT display, Chinese / English interface display
B 路 32 种内部存储波形，8 种用户任意波形
32 internal storage waveforms on channel B and 8 arbitrary forms
最小输出 1mVpp(高阻)，最高分辨率 1µVpp(高阻)
Minimum output 1mVpp (high impedance), highest resolution 1µVpp (high impedance)
最小输出可到 1mV（50Ω）的稳定波形
Stable waveform with minimum output to 1mV (50Ω)
具有 FM、AM、FSK、ASK、PSK 多种调制功能
With FM，FSK, ASK, PSK，ASK，PSK multiple modulation functions
具有扫频、扫幅、猝发、A 路 B 路相加功能
With frequency sweep, amplitude, burst, A and B add functions
过压、过流、输出短路、反灌电压保护功能
With Over-voltage, over-current, output short-circuit, back-charge voltage protection functions
| 产品型号 Model | SFG3010A | SFG3020A | SFG3040A |
| 频率范围（正弦波） Frequency Range (Sine Wave) | 40μHz~10MHz | 40μHz~20MHz | 40μHz~40MHz |
主要技术指标 Main Specifications
| 指标 Specifications | 通道 A Channel A | 通道 B Channel B |
| 频率特性 Frequency characteristics | ||
| 正弦波频率范围 Sine wave frequency range |
2kHz～频率上限分辨率：40mHz 2kHz ～ frequency upper limit Resolution: 40mHz 40µHz～2kHz 分辨率：40µHz 40µHz ～ 2kHz Resolution: 40µHz |
正弦波 Sine wave：40mHz~1MHz 其它波形 Other waveforms：40mHz~50kHz |
| 方波频率范围 Square wave frequency range | 40µHz～10MHz(≤20MHz) 40µHz～20MHz(>20MHz) |
|
| 脉冲波频率范围 Pulse wave frequency range | 40µHz～10MHz | |
| 频率准确度 Frequency accuracy | ±（5×10 -5 +40mHz） | ±（1×10 -5 +40mHz） |
| 频率稳定度 Frequency stability | ±1×10 -6 /3h (小型温补晶体振荡器 Small temperature compensated crystal oscillator) | |
| 频率分辨率 Frequency resolution | 40mHz | |
| 波形特性 Waveform characteristics | ||
| 波形种类 Wave type | 正弦波，方波，脉冲波，直流 Sine wave, square wave, pulse wave, DC | 正弦波，方波，三角波，锯齿波，阶梯波等 32 种存储 波形，8 种用户任意波形 Sine wave, square wave, triangle wave, sawtooth wave, step wave, etc. 32 kinds of stored waveforms, 8 arbitrary waveforms |
| 波形长度 Wave length | 1024 点 points | 1024 点 points |
| 采样速率 Sampling rate | 180MSa/s | 100MSa/s |
| 波形幅度分辨率Waveform resolution | 10bits | 8bits |
| 正弦波谐波抵制度 Sine wave harmonic cancellation system | ≥50dBc(频率 frequency≤5MHz) ≥45dBc(频率 frequency≤10MHz) ≥40dBc(频率 frequency≤20MHz) ≥35dBc(频率 frequency≤40MHz) |
|
| 正弦波总失真度 Sine wave total distortion | ≤0.1%(20Hz～200kHz) | |
| 方波升降沿时间 Pulse and square wave rising / falling time | ≤20ns | |
| 脉冲波、方波过冲 Pulse and square wave overshoot | ≤5% | |
| 方波占空比 Square wave duty cycle | 50% | |
| 脉冲波占空比 Pulse duty cycle | 0.1%～99.9% | |
| 幅度特性 Amplitude characteristics | ||
| 幅度范围 Amplitude range | 1mVpp～20Vpp (高阻 High resistance) | 100mVpp~20Vpp (高阻 High resistance) |
| 幅度分辨率 Amplitude resolution | 1μVpp (高阻 High resistance) | 20mVpp |
| 幅度准确度 Amplitude accuracy | ±(1%+1mVrms)(高阻，有效值，频率 1kHz） ± (1% + 1mVrms) (high impedance, effective value, frequency 1kHz) | |
| 幅度稳定度 Amplitude stability | ±0.5%/3 hour | |
| 幅度平坦度 Amplitude flatness |
±5%（频率 frequency<5MHz） ±10%（频率 frequency<10MHz） ±20%（频率 frequency>60MHz） |
|
| 输出阻抗 Output impedance | 50Ω | 50Ω |
| 正弦波幅值设置范围 Sine wave amplitude setting range（50Ω） | 1mVpp～10Vpp (频率 frequency≤10MHz) 1mVpp～7Vpp (频率 frequency≤40MHz) |
|
| 正弦波幅值设置范围（高阻） Sine wave amplitude setting range (high impedance) | 1mVpp～20Vpp (频率 frequency≤10MHz) 1mVpp～14Vpp (频率 frequency≤40MHz) |
|
| 偏移特性 Offset characteristics | ||
| 偏移范围 Offset range | 偏移绝对值 Offset absolute value+0.5×幅度峰峰值
Amplitude peak-to-peak)≤2Vdc×衰减系数
Attenuation coefficient(幅度峰峰值 Amplitude
peak-to-peak≤4，衰减器自动 Attenuator
automatic) ; (偏移绝对值 Offset absolute value+0.5×幅度峰峰值 Amplitude peak-to-peak)≤10Vdc×衰减系数 Attenuation coefficient (幅度峰峰值 Amplitude peak-to-peak≥4，衰减器自动 Attenuator automatic) |
|
| 分辨率 Resolution | 20mV（高阻 High resistance） | |
| 偏移准确度 Offset accuracy | ±（1%+20mVdc）(幅度 Amplitude<4Vpp) | |
| 扫描特性 Scanning characteristics | ||
| 扫描类型 Scan type | 频率扫描、幅度扫描 Frequency sweep, amplitude sweep | |
| 扫描范围 Scan range | 起始点和终止点任意设定 Arbitrary setting of starting point and ending point | |
| 扫描时间 Scan time | 100ms～600s | |
| 扫描方向 Scanning direction | 正向扫描，反向扫描，往返扫描 Forward scan, reverse scan, round-trip scan | |
| 扫描模式 Scan mode | 线性或对数 Linear or logarithmic | |
| 控制方式 control method | 自动扫描或手动扫描 Scan automatically or manually | |
| 调频特性 FM characteristics & 调幅特性 AM characteristics | ||
| 载波信号 Carrier signal | 波形为正弦波或方波，频率范围同主波形 The waveform is a sine wave or a square wave, and the frequency range is the same as the main waveform | |
| 调制方式 Modulation | 内或外 Inside or outside | |
| 调制信号 Modulated signal | B 路信号或外输入信号 B signal or external input signal | |
| 调制信号频率 Modulation signal frequency | 同 B 路信号 Same as signal B | |
| 调频频偏 FM frequency offset | 0%~20% | |
| 外输入信号幅度 External input signal amplitude | 20Vpp (-10V~ +10V) | |
| 外调频 Outside FM | 载波频率精确度≤10-3 ，频偏误差≤±20% Carrier frequency accuracy ≤10-3, frequency deviation error ≤ ± 20% | |
| 调幅特性 AM characteristics | ||
| 载波信号 Carrier signal | 波形为正弦波或方波，频率范围同主波形 The waveform is a sine wave or a square wave, and the frequency range is the same as the main waveform | |
| 调制方式 Modulation | 内或外 Inside or outside | |
| 调制信号 Modulated signal | B 路信号或外输入信号 B signal or external input signal | |
| 调制信号频率 Modulation signal frequency | 同 B 路信号 Same as signal B | |
| 失真度 | ≤2% | |
| 调制深度 | 0%~120% | |
| 相对调制误差 | ≤±5% | |
| 外输入信号幅度 | 20Vpp (-10V~ +10V) | |
| 键控特性 Keying characteristics | ||
| FSK | 载波频率和跳变频率任意设定 Arbitrary setting of carrier frequency and hopping frequency | |
| ASK | 载波幅度和跳变幅度任意设定 Arbitrary setting of carrier amplitude and transition amplitude | |
| PSK | 跳变相位：0～360°，分辨率：11.25° Transition phase: 0 ～ 360 °, resolution: 11.25 ° | |
| 交替速率 Alternating rate | 10ms~60s | |
| 谐波特性（B 路频率为 A 路的谐波）Harmonic characteristics (frequency of channel B is harmonic of channel A) | ||
| 谐波次数 Harmonic order | 0.1～250.0 次 times | |
| 谐波频率 Harmonic frequency | <1MHz | |
| 相位调节 Phase adjustment | 1°/步 step | |
| 猝发特性（B 路作为猝发输出信号）Burst characteristics (B channel is used as burst output signal) | ||
| B 路频率 B frequency | 40mHz～1MHz | |
| 猝发频率 Burst frequency | 10mHz～50kHz | |
| 猝发计数 Burst count | 1-65000 个周期 Cycles | |
| 触发方式 Burst mode | 内部触发，单次触发，TTL 触发 Internal trigger, single trigger, TTL trigger | |
一般指标 General Specifications
| 电源 Power supply | 电压 Voltage：AC200V~ AC240V 50Hz
AC100V~ AC127V 60Hz（注意输入电压转换开关位置 Note the position of the input voltage changeover
switch） 功耗 Power consumption：＜45VA |
| 环境条件 Environmental conditions | 温度 temperature：0～40℃ 湿度 humidity：＜80% |
| 操作特性 Operating characteristics | 全部按键操作，菜单显示，旋钮连续调节 All button operations, menu display, knob continuous adjustment |
| 显示方式 Display method | 3.5 寸 TFT 显示，简体中文、繁体中文、英文菜单 3.5-inch TFT display, Simplified Chinese, Traditional Chinese, English menu |
| 制造工艺 Manufacturing process | 表面贴装工艺，大规模集成电路，可靠性高，使用寿命长。 Surface mount technology, large scale integrated circuit, high reliability and long service life. |
| 尺寸 Dimensions | 机器尺寸 Machine size：385(D)×260(W)×110(H)mm 机箱尺寸 Case size：415(D)×295(W)×195(H)mm |
| 重量 Weight | 4kg |
配件 Accessories
| 频率测量范围 Frequency measurement range | 1Hz～200MHz |
| 输入信号幅度 Input signal amplitude | 100mVpp～20Vpp |
| 低通滤波器 Low-pass filter | 截止频率 Cut-off frequency 100kHz |
| 测量时间 measure time | 10ms～60.0s |
程控特性 Programmable Characteristics
程控接口 Program-controlled interface： 标配 USB 通用串行总线接口、RS232 串行接口 Standard USB universal serial bus interface, RS232 serial interface
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