Other Parts Discussed in Thread: FDC2214, LP2985
Hello,
I observed different LED indicator statuses , but have difficult to understand them, there is no explanation about LED indicator in the manual. Can someone provide me a description about the LED indicator staduses?
I noticed different indicator behaviors when an off-board oscillator is used.
Case 1: with the 40 MHz on-board external oscillator
1. The green was on when no sensor was connected to any channel,
2. The green was on when channel 0 and/or 1 was connected to a sensor and channels 2 and 3 are free,
3. The red was on whenever channel 2 and/or 3 was connected to a sensor, regardless channel 0 and/or 1 was connected to a snsor or not.
Case 2: with Off-Board oscillator: CB3L-5I-40M0000 (CTS-Frequency Controls)
The red was on when channel 2 and 3 were connected to sensors and channel 0 and 1 were free.
Case 3: with Off-board oscillator O 40.0-JT32C-A-K-3.3-LF (Jauch Quartz)
The green was on when channel 2 and 3 were connected to sensors and channel 0 and 1 were free.
I am confused by the LED indicator statuses. Could someone help?
PS: All sensors are the same having approximately 60-70 pF. All test results look reasonable.
Regards,
Gu