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Unexpected Relay Behavior on [c]FP-RLY-42x Modules When I write to one or more channels on a [c]FP-RLY-42x module, other channels on that module or adjacent modules exhibit unexpected behavior. Why is that? URL: http://digital.ni.com/public.nsf/allkb/246152C8859CE715862573C60070728F

Why Does my [c]FP-DO-400/401 Have Channels Stuck in the On Position? My [c]FP-DO-400/401 has channels stuck in the ON position, but the LED functions properly. The module only outputs a high voltage. What happened? How can I avoid this in the future? URL: http://digital.ni.com/public.nsf/allkb/C2CD6CC94089E477862573A60074DADF

[c]FP-PWM-520 Generates Incorrect Frequencies Why does my [c]FP-PWM-520 generate a frequency that is one-third of the expected value? URL: http://digital.ni.com/public.nsf/allkb/1FD9AF7525432D778625735400593807

Can the cFP-DO-401 Generate Square Wave Pulses? I have a cFP-2000 controller and a cFP-DO-401 module. Can I output square waves with the cFP-DO-401 module of a given frequency? URL: http://digital.ni.com/public.nsf/allkb/6AE03CAC3EAF14BE8625727C005697C4

Why did I measure incorrect PWM signal from my [c]FP-PWM-520's Vout? I write 0.5 to the channels of my [c]FP-PWM-520 in Measurement & Automation Explorer (MAX) and the return status of the write operation is 'Success'. However when I measure the output with an oscilloscope I see a large DC component added to my output signal. Why is this? URL: http://digital.ni.com/public.nsf/allkb/E727EEFA438E41C786257264004042F2

[c]FP-PWM-520 의 Vout에서 잘못된 PWM 신호가 측정되는 이유가 무엇입니까? Measurement & Automation Explorer (MAX)에서 [c]FP-PWM-520 모듈의 채널로 0.5를 출력해주었고, 출력 상태는 'Success'으로 나왔습니다. 그러나 출력값을 오실로스코프에서 측정해보면 제 출력 신호에 큰 DC 값이 포함되어 있는 것을 보게됩니다. 무엇이 문제입니까? URL: http://digital.ni.com/public.nsf/allkb/0D44377CF5E5E5B88625726C000D0E03

怎样连接两个同为漏极或源极的Ｉ／Ｏ 我有两个同种类型的Ｉ／Ｏ（例如：两个漏极或两个源极）。我应该怎样连接它们？ URL: http://digital.ni.com/public.nsf/allkb/D8D2B9DB5657180E482571F5000CA061

Using cFP-QUAD-510 for Frequency Measurement Problem: Can I use the QUAD module for FieldPoint to measure frequency? Solution: The short answer to this question is Yes! You can use the QUAD module to measure the frequency of a TTL signal. However the counter modules are better suited for this purpose. URL: http://digital.ni.com/public.nsf/allkb/60DDEA8659D9DDB2862571B700822586

[c]FP-CTR-50x External Power Supply Voltage Specification is Incorrect I recently purchased the [c]FP-CTR-50x and an external power supply of 24 VDC. However, along with this order, I received an addendum saying that the [c]FP-CTR-50x operating instructions incorrectly specify 10-30 VDC external power supply, and it should be 10-20 VDC. Will my 24 VDC power supply URL: http://digital.ni.com/public.nsf/allkb/FAB49B6DCC0727A48625712600773542

Why Does My [c]FP-CTR-50x Module Miss Pulses? Why does my [c]FP-CTR-50x counter module fail to count the first few pulses of my source signal? URL: http://digital.ni.com/public.nsf/allkb/0053D93F4FDDD91B862571220075597E