developer, maintenancecenter, writer
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====DC POWER SUPPLY AND POWERING ON==== | ====DC POWER SUPPLY AND POWERING ON==== | ||
O4 instrument is DC power | O4 instrument is powered by DC power through USB 3.0 Power Delivery protocol, which can be provided through a USB computer port or external DC supply. | ||
When computer | When the computer can power O4 (8 W) with a single cable, the LEDs on the back panel are lit as shown below: | ||
[[File:O4_power_1.png|100px]] | [[File:O4_power_1.png|100px]] | ||
=====OLD PC===== | =====OLD PC===== | ||
When the computer port is not powerful enough to supply O4, this could happen with old | When the computer port is not powerful enough to supply O4, this could happen with old PCs without a USB 3.0 port. Then a backup power source is required, with a maximum of 5 volts and 2 amps. | ||
* | * | ||
In case of back-up powering, please follow the instructions: | In case of back-up powering, please follow the instructions: |