Power On the Device
NOTE: Before connecting the device to the power supply, attach an ESD strap to an ESD point and place the
other end of the strap around your bare wrist.
1. If you are using the AC model, perform the following steps:
a. Connect the power supply adapter to the power supply point on the device and to a power source. We recommend
using a surge protector. You must allow the device between five and seven minutes to boot after you power it on.
Figure 7: Connecting the Power Cable
b. Secure the power cord to the cable tie holder using a tie-wrap.
2. If you are using the DC model, perform the following steps:
WARNING: Before performing the following procedure, ensure that there is no power in the DC
circuit. To ensure that all power is cut off, locate the circuit breaker on the panel board that services
the DC circuit, switch the circuit breaker to the OFF (0) position, and tape the switch handle of the
circuit breaker in the OFF position.
a. Ensure that the voltage across the DC power source cable leads is 0 V and that the cable leads do not become
active while you are connecting DC power.
b. Verify that the DC power cables are correctly labeled before making connections to the power supply. In a typical
power distribution scheme where the return is connected to chassis ground at the battery plant, you can use a
multimeter to verify the resistance of the -48V and RTN DC cables to chassis ground:
•
The cable with very high resistance (indicating an open circuit) to chassis ground will be connected to the V-
(input) DC power input terminal.
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