Hi everyone,
I'm not sure if this is the right forum to post this, but I need some help and decided to give it a try.
I have some technical questions regarding the new Multifunction-IO device, mioDAQ USB-6451, and would greatly appreciate any assistance.
1. Galvanic Isolation for USB Type-C
The USB-6451 is powered via a USB Type-C connection to the PC, which connects the device's ground to the building ground and, subsequently, to other components within the testing system. To avoid potential interference or ground loops, we're looking for a way to galvanically isolate the ground of the USB-6451.
- Q1: Is there an isolating adapter for USB Type-C cables that provides galvanic isolation? For example, in our measurement applications with USB Type-B cables, we use the USB isolator from Delock. Are there similar solutions available for USB Type-C?
2. Input Impedance in the "Device Off" State
During wiring planning, we noticed the USB-6451 specifications indicate a high input impedance (>10 GΩ) in the "Device On" state, but a low input impedance (1.290 Ω) in the "Device Off" state. I have the following technical questions about this:
- Q2: Why is the input impedance so low in the "Device Off" state? A brief technical explanation would be greatly appreciated for better understanding.
- Q3: Does this imply that all input signal sources (devices) must be turned off before the USB-6451 enters the "Device Off" state to prevent overloading the analog inputs? This is particularly important for safety considerations.
Thank you in advance for your support!
