Input (continued):
Gain Accuracy ± 2% typical for digital outputs; ± 6% typical for analog outputs
Gain Stability 200 ppm/°C typical

Signal Channel Filters
High-pass Signal Channel Filter
-3 dB frequency 1 Hz, 10 Hz, 100 Hz or 1 kHz
Low-pass Signal Channel Filter
-3 dB frequency 50 Hz, 500 Hz, 5 kHz or 50 kHz
Frequency Accuracy ± 10%

Reference Channel
Mode TTL or Analog
Frequency Range 5 Hz to 20 kHz
Analog Impedance 1 MΩ // 30 pF
Phase Set Resolution 0.1° increments
Phase Set Accuracy ± 1°
Phase Noise ≤ 0.015° rms @ 1 kHz, 100 ms, 12 dB
TC ≤ 0.007° rms @ 10 kHz, 100 ms, 12 dB TC
Phase Drift < 0.05°/°C
Orthogonality ± 1°
Acquisition Time 1 s + 2 cycles max

数字锁相放大器7280/7265/7225性能卓越，采用直接数字解调，而且操作简单。不同与其它的锁放，它也能工作在传统的音频频率范围。模拟锁相放大器5210/5209满足您在模拟应用方面的苛刻需要。