固緯SFG-2104數(shù)字合成信號(hào)源的特點(diǎn)：
l 直接數(shù)位合成技術(shù)及FPGA晶片設(shè)計(jì)
l 頻率范圍:0.1Hz~4MHz
l 頻率解析度:100mHz
l 頻率準(zhǔn)確度及飄移度:+/-20ppm
l 低失真正弦波:-55dBc,0.1Hz~200kHz
l 輸出波形:正弦波、方波、三角波
l 具TTL及CMOS OUT
l 前面板可設(shè)定十組儲(chǔ)存及呼叫操作記憶
l 內(nèi)附六位數(shù)150MHz高解析度頻率計(jì)
l 具AM/FM調(diào)變及 LIN/LOG 掃描功能
固緯SFG-2104數(shù)字合成信號(hào)源的技術(shù)參數(shù)：
| MAIN | |
| Frequency Range | 0.1Hz~4MHz |
| Frequency Range | 0.1Hz~1MHz |
| Frequency Resolution | 0.1Hz |
| Frequency Stability | ∮ 20 ppm |
| Frequency Accuracy | ∮ 20 ppm |
| Frequency Aging | ∮ 5 ppm / year |
| Output Function | Sine, Square, Triangle |
| Amplitude Range | 10Vpp（into 50load） |
| Flatness（Sinewave relative to 1kHz） | ≌∮ 0.3dB,0.1Hz°1MHz; ≌∮ 0.5dB,1MHz°4MHz; ≌∮ 2dB, 4MHz°10MHz |
| Impedance | 50∮10 |
| Attenuator | -20dB∮1dB⊙2 |
| DC Offset | ≌-5V°≈+5V（into 50load） |
| Duty Control Range | 20% to 80% below 1MHz （Square wave only） |
| Duty Control Resolution | 1% |
| Display | 9 digits LED display |
| SINE WAVE | |
| Harmonics Distortion | -55dBc,0.1Hz°200kHz; -40dBc,0.2MHz°4MHz; -30dBc,4MHz°10MHz |
| TRIANGLE WAVE | |
| Linear | ≠98,0.1Hz°100kHz;≠95,100kHz°1MHz |
| SQUARE WAVE | |
| Symmetry | ∮ 1% of period +4ns to 0.1Hz°100kHz ;Rise or Fall Time; ∝25ns at maximum output.（into 50load） |
| 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 |
| SWEEP OPERATION | |
| Sweep/Rate | 100:1 ratio max. and adjustable |
| Sweep/Time | 0.5Sec°30Sec adjustable |
| Sweep/Mode | Lin. / Log. switch selector |
| AMPLITUDE MODULATION | |
| Depth & MOD. Frequency | 0°100 ; 400Hz（INT）,DC°1MHz（EXT） |
| Carrier BW | 100Hz°5MHz（-3dB） |
| EXT Sensitivity | ∝10Vpp for 100modulation |
| FREQUENCY MODULATION | |
| Deviation & MOD. Frequency | 0°∮5 ; 400Hz（INT）,1kHz（EXT） |
| EXT Sensitivity | ∝10Vpp for 10 modulation |
| FREQUENCY COUNTER | |
| Range | 5Hz°150MHz |
| Accuracy | Time base accuracy∮1count |
| Time base | ∮20ppm（23∮5） after; 30 minutes warm up |
| Resolution | The maximum resolution is 100nHz for 1Hz and 0.1Hz for 100MHz |
| Input Impedance | |
| Sensitivity | ∝35mVrms（5Hz~100MHz） |
| STORE/RECALL FUNCTION | |
| | 10 groups of Setting memories |
| POWER SOURCE | AC115V, 230V∮15%, 50/60Hz |
| ACCESSORIES | |
| | Instruction manual x 1 |
| DIMENSION & WEIGHT | 107（W）⊙266（H）⊙293（D） m/m |
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