3-28 D60 Line Distance Protection System GE Multilin3.3 DIRECT INPUT AND OUTPUT COMMUNICATIONS 3 HARDWARE3 Figure 3–30: DIRECT INPUT AND OUTPUT SINGLE/DUAL CHANNEL COMBINATION CONNECTIONThe interconnection requirements are described in further detail in this section for each specific variation of type 7 commu-nications module. These modules are listed in the following table. All fiber modules use ST type connectors.Not all the direct input and output communications modules may be applicable to the D60 relay. Only the modulesspecified in the order codes are available as direct input and output communications modules.Table 3–4: CHANNEL COMMUNICATION OPTIONS (Sheet 1 of 2)MODULE SPECIFICATION2A C37.94SM, 1300 nm, single-mode, ELED, 1 channel single-mode2B C37.94SM, 1300 nm, single-mode, ELED, 2 channel single-mode2E Bi-phase, 1 channel2F Bi-phase, 2 channel2G IEEE C37.94, 820 nm, 128 kbps, multi-mode, LED, 1 channel2H IEEE C37.94, 820 nm, 128 kbps, multi-mode, LED, 2 channels2S Six-port managed Ethernet switch with high voltage power supply2T Six-port managed Ethernet switch with low voltage power supply72 1550 nm, single-mode, laser, 1 channel73 1550 nm, single-mode, laser, 2 channels74 Channel 1 - RS422; channel 2 - 1550 nm, single-mode, laser75 Channel 1 - G.703; channel 2 - 1550 nm, single-mode, laser76 IEEE C37.94, 820 nm, 64 kbps, multi-mode, LED, 1 channel77 IEEE C37.94, 820 nm, 64 kbps, multi-mode, LED, 2 channels7A 820 nm, multi-mode, LED, 1 channel7B 1300 nm, multi-mode, LED, 1 channel7C 1300 nm, single-mode, ELED, 1 channel7D 1300 nm, single-mode, laser, 1 channel7E Channel 1: G.703, Channel 2: 820 nm, multi-mode7F Channel 1: G.703, Channel 2: 1300 nm, multi-mode7G Channel 1: G.703, Channel 2: 1300 nm, single-mode ELED7H 820 nm, multi-mode, LED, 2 channels7I 1300 nm, multi-mode, LED, 2 channels7J 1300 nm, single-mode, ELED, 2 channels7K 1300 nm, single-mode, LASER, 2 channels7L Channel 1: RS422, channel: 820 nm, multi-mode, LED7M Channel 1: RS422, channel 2: 1300 nm, multi-mode, LED842013A1.CDRTxTxUR #1Channel #1Channel #2UR #2UR #3RxRxTx1Tx2Rx1Rx2NOTE