Hello, NI Community,
Intend to measure ±10 Volt at 6212's 15 Analog Inputs (ai's) simultaneously.
Overvoltage at 15 ai's is possible also simultaneously.
To protect the ai's, I would bridge them with Zener Overvoltage Transient Suppressors of the following performances:
- no conduction: 0 to ±10 Volt;
- significant conduction begins, but still voltage can increase further 12.3 Volt;
- clamping voltage 17 Volt = full protection (35 Amperes through the bridge at this voltage).
But is 17 Volt is harmless for the 6212, if applied to all ai's simultaneously?
Tried to read NI's USB-6212 Specifications:
"Overvoltage protection for all analog input and sense channels when 6212 is OFF: ±20 V for up to two AI pins."
Why for only two ai's?
And what happens if ±17 Volt applied to all ai's?
Please help.
Thank you very much
