Physical Description NetVanta 4660/5660 Series18 Copyright © 2014 ADTRAN, Inc. 617004660F1-34AThe GIG 0/2 through GIG 0/5 ports consist of one RJ-45 and one SFP slot for connectivity over fiber.(Use either the RJ-45 connector or the SFP slot. The fiber slot has precedence.) See Table A-3 on page36 for the Ethernet interface pinouts. The status LEDs, are located above each interface.1 PPS 50 ohm Phase Synchronization Measurement InterfaceThe phase synchronization interface, labeled 1 PPS OUT, provides a one pulse per second outputwhich can be used to connect to measurement equipment.• Period: 1 second +/-1 ppm• Pulse Width: 200 ns (minimum), 500 ms (maximum), 10 us (typical)• Rise Time: 5 ns (maximum)• Voh: 5.5 V (maximum), 1.2 V (minimum)• Vol: 0.3 V (maximum), -0.3 V (minimum)Timing InterfaceThe RJ-45 interface, labeled T4, is provided for timing output in both T12 and E12 modes.Option SlotThe option slot accepts a variety of network modules (refer to Option Modules on page 23).LED DescriptionsThe following table describes LED activity for the NetVanta 4660/5660 Series.Table 1. Front Panel Status LED BehaviorsLED Color IndicationSTAT Off Unit is not receiving power.Green (flashing) The unit is powering up. On power up the STAT LED flashesrapidly for five seconds, during which time the user can escapeto boot mode from the CONSOLE port.Green (solid) The power is on and self-test passed.Red (solid) The power is on, but the self-test failed or the application codecould not be booted.STAT Off Unit is not receiving power.FAN Green (solid) Both fans are functioning properly.Amber (solid) Only one fan is functioning.Red (solid) Neither fan is functioning.GIG 0/1 throughGIG 0/5Off Port is inactive or administratively disabled.Green (solid) The link is up.Amber (flashing) There is activity on the link.