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Our Coordinates: Lat 42.75 N, Long 71.85 W |
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INTERFACE CONVERSION CHARTS(Standard Interfaces and Their Relationship to Each Other) This interface provides balanced twisted-pair signaling for data and clock signals, but provides unbalanced single-ended signaling for all other control terms. | PIN | NAME | SIGNAL NAME | CCITT | DIRECTION | A | FG | FRAME GROUND | 101 | N/A | B | SG | SIGNAL GROUND | 102 | N/A | C | RTS | REQUEST TO SEND | 105 | TO MODEM | D | CTS | CLEAR TO SEND | 106 | FROM MODEM | E | DSR | DATA SET READY | 107 | FROM MODEM | F | DCD | DATA CARRIER DETECT | 109 | FROM MODEM | H | DTR | DATA TERMINAL READY | 108.1/108.2 | TO MODEM | J | RI | RING INDICATOR | 125 | FROM MODEM | K/M | F1 | RESERVED FOR FUTURE INTERNATIONAL USE | L/N | F2 | R/T | RX | RECEIVE DATA | 104 | FROM MODEM | V/X | SCR | SERIAL CLOCK RECEIVE | 115 | FROM MODEM | Y/AA | SCT | SERIAL CLOCK TRANSMIT | 114 | FROM MODEM | P/S | TX | TRANSMIT DATA | 103 | TO MODEM | U/W | SCTE | SERIAL CLOCK TRANSMIT EXTERNAL | 113 | TO MODEM | Z/BB | F3 | RESERVED FOR FUTURE INTERNATIONAL USE | CC/EE | F4 | DD/FF | F5 | HH/KK | N1 | RESERVED FOR FUTURE INTERNATIONAL USE | JJ/LL | N2 | MM/NN | F | RESERVED FOR FUTURE INTERNATIONAL USE | Note: Double letters may be indicated by corresponding lower case letters on the connector. |
This interface provides balanced, twisted-pair signaling for all data and clock signals, and for most control item. | PIN | NAME | SIGNAL NAME | EIA | DIRECTION | 1 | FG | FRAME GROUND | AA | N/A | 2/14 | TX | TRANSMIT DATA | BA | TO MODEM | 3/16 | RS | RECEIVE DATA | BB | FROM MODEM | 4/19 | RTS | REQUEST TO SEND | CA | TO MODEM | 5/13 | CTS | CLEAR TO SEND | CB | FROM MODEM | 6/22 | DSR | DATA SET READY | CC | FROM MODEM | 7 | SG | SIGNAL GROUND | AB | N/A | 8/10 | CD | RX LINE SIGNAL DETECTOR | CF | FROM MODEM | 24/11 | SCTE | EXTERNAL CLOCK | DB | TO MODEM | 15/12 | SCT | TRANSMIT CLOCK | DB | FROM MODEM | 17/9 | SCR | RECEIVE CLOCK | DD | FROM MODEM | 20/23 | DTE | DATA TERMINAL READY | CF | TO MODEM | 18 | LL | LOCAL LOOPBACK | | TO MODEM | 21 | RL | REMOTE LOOPBACK | | TO MODEM | 25 | TM | TEST MODE | | FROM MODEM |
This interface provides unbalanced, single-ended signaling for all data, clock and control items. | PIN | NAME | SIGNAL NAME | EIA | CCITT | DIRECTION | 1 | FG | FRAME GROUND | AA | 101 | N/A | 2 | TX | TRANSMIT DATA | BA | 103 | TO MODEM | 3 | RX | RECEIVE DATA | BB | 104 | FROM MODEM | 4 | RTS | REQUEST TO SEND | CA | 105 | TO MODEM | 5 | CTS | CLEAR TO SEND | CB | 106 | FROM MODEM | 6 | DSR | DATA SET READY | CC | 107 | FROM MODEM | 7 | SG | SIGNAL GROUND | AB | 102 | N/A | 8 | DCD | DATA CARRIER DETECT | CF | 109 | FROM MODEM | 9 | | RESERVED FOR DATA SET TESTING | | | | 10 | | RESERVED FOR DATA SET TESTING | | | | 11 | | UNASSIGNED | | | | 12 | (S)CO | SECONDARY CARRIER ON | SCF | 122 | FROM MODEM | 13 | (S)CTS | SECONDARY CLEAR TO SEND | SCB | 121 | FROM MODEM | 14 | (S)TX | SECONDARY TRANSMIT DATA | SBA | 118 | TO MODEM | 15 | SCT | SERIAL CLOCK TRANSMIT | DB | 114 | FROM MODEM | 16 | (S)RX | SECONDARY RECEIVE DATA | SBB | 119 | FROM MODEM | 17 | SCR | SERIAL CLOCK RECEIVE | DD | 115 | FROM MODEM |
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