HP 1920-24G-PoE+ (370W), 1920-8G-PoE+ (65W), 1920-48G, 1920-8G-PoE+ (180W), 1920-16G manual Emi

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Gas	Maximum concentration (mg/m3)
NH3	0.05
Cl2	0.01

EMI

All electromagnetic interference (EMI) sources, from outside or inside of the switch and application system, adversely affect the switch in the following ways:

•A conduction pattern of capacitance coupling.

•Inductance coupling.

•Electromagnetic wave radiation.

•Common impedance (including the grounding system) coupling.

To prevent EMI, use the following guidelines:

•If AC power is used, use a single-phase three-wire power receptacle with protection earth (PE) to filter interference from the power grid.

•Keep the switch far away from radio transmitting stations, radar stations, and high-frequency devices.

•Use electromagnetic shielding when necessary. For example, use shielded interface cables.

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Contents HP 1920 Gigabit Ethernet Switch Series Page Contents Page Safety recommendations Preparing for installationHP 1920 Gigabit Ethernet Switch Series models Dust concentration limit in the equipment room Examining the installation siteTemperature/humidity CleannessEMI Attaching Type-A mounting brackets to the switch Installing the switchAttaching Type-C mounting brackets to the switch Attaching Type-B mounting brackets to the rack post Mounting the switch on a wall Mounting the switch on a workbenchHole spacing Connecting network cable Connecting cablesInstalling the SFP transceiver module and optical fibers Connecting the AC power cord Connecting the console cablePower supply selection criteria Connecting the DC power cordDC input voltage Power supply Connecting the DC power cord to the DC power receptacle Verifying the installationConsole cable Accessing the switch for the first timeSetting up the configuration environment Connecting the console cableConnection procedure Setting terminal parametersSelect File Properties in the HyperTerminal window Setting the serial port parametersHyperTerminal window Verification before power-on Powering on the switchPowering on the switch Press Enter and the system displays the following prompt Contacting HP Support and other resourcesRelated information Convention Description ConventionsConvention Description Network topology icons 1920-16G Appendix a Chassis views and technical specificationsChassis views 1920-8G1920-48G 1920-24G1920-8G-PoE+ 180W 1920-8G-PoE+ 65W1920-24G-PoE+ 370W 1920-24G-PoE+ 180WPorts and interface card slots Physical specificationsChassis dimensions and weights Chassis Dimensions H x W x D Maximum weightPower specifications Environmental specificationsChassis Fixed fans Cooling systemFiber port LEDs Power LEDAppendix B LEDs Copper port LEDsOnly the HP 1920-24G-PoE+ 370W supports the RPS RPS power LED descriptionTroubleshooting methods Appendix C TroubleshootingSymptom Troubleshooting method