CHAPTER 3: INSTALLATION DIRECT INPUT AND OUTPUT COMMUNICATIONSN60 NETWORK STABILITY AND SYNCHROPHASOR MEASUREMENT SYSTEM – INSTRUCTION MANUAL 3-333Figure 3-40: IEEE C37.94 timing selection switch settingModules shipped since January 2012 have status LEDs that indicate the status of the DIP switches, as shown in thefollowing figure.Figure 3-41: Status LEDsThe clock configuration LED status is as follows:• Flashing green — loop timing mode while receiving a valid data packetCover screwTop coverBottom coverEjector/inserter clipEjector/inserter clipTiming selectionswitchesChannel 1Channel 2FRONTREAR831774A3.CDRTx1Tx2Rx1Rx2Tx1Tx2CH1 Link/Activity LEDCH2 Link/Activity LEDCOMMS2BC37.94SM1300nm single-modeELED2 channelTechnical support:Tel: (905)294-6222Fax: (905)201-2098(NORTH AMERICA)1 800 547-8629Made in CanadaGE MultilinREV. DCH1 Clock Configuration LEDCH2 Clock Configuration LEDFRONT VIEW REAR VIEW 842837A1.cdr