SR542 — 低抖动光学斩波器
0.4 Hz 至 20 kHz 频率范围
灵活同步
低相位抖动
0.01° 相位分辨率
20 ppm 频率精度
长寿命无刷电机
USB电脑接口
SR542 精密光学斩波器提供稳定和灵活的光学斩波。 斩波频率在很宽的范围内可调，并且可以从各种输入源控制频率和相位，包括与外部基准的同步。 前面板提供整个配置的直观视图，一目了然，而远程 USB 通信允许从远程 PC 进行完全控制。
SR542 Specifications | |
Frequency | |
Shaft (fshaft) | 0.2 Hz to 200 Hz |
Chop (nslots × fshaft) | 0.4 Hz to 400 Hz (2 slot blade) |
Sources | Internal clock, VCO, AC line, or Ext Sync |
Accuracy | ±20 ppm |
Stability | ±20 ppm per year |
Resolution | 6 digits |
Multiplier, n | integer, 1 to 200 |
Divisor, m | integer, 1 to 200 |
Phase | |
Resolution | 0.01 °C |
Jitter (°opt, rms) | [jitter (µs) / chop period (µs)] × 360° |
Slot count | at fmin | at 10× fmin | at fmax |
2 | 0.2° (0.4 Hz) | 0.2° (0.1 Hz) | 0.4° (400 Hz) |
5 | 1.0° (1 Hz) | 0.5° (10 Hz) | 0.2° (1 kHz) |
6 | 0.9° (1.2 Hz) | 0.4° (12 Hz) | 0.2° (1.2 kHz) |
10 | 1.0° (2 Hz) | 0.8° (20 Hz) | 0.5° (2 kHz) |
25 | 1.3° (5 Hz) | 0.7° (50 Hz) | 0.5° (5 kHz) |
30 | 1.4° (6 Hz) | 0.7° (60 Hz) | 0.6° (6 kHz) |
100 | 2.4° (20 Hz) | 1.2° (200 Hz) | 1.0° (20 kHz) |
