MOTOROLA, INC. 2140 Card Type Modem (synchronous/asynchronous) Chip Set Unidentified Maximum Data Rate 2400bps Data Bus External Data Modulation Unidentified Protocol [Image] CONNECTIONS Function Label Function Label Line out CN1 Talk/data switch SW1 Line in CN2 Power switch SW2 RS-232/422 CN3 Volume R1 AC power in CN4 USER CONFIGURABLE SETTINGS Setting Label Position Chassis ground connected to signal ground JP1 Pins 2 & 3 closed Chassis ground not connected to signal JP1 Pins 1 & 2 ground closed Transmit level set to -9 (permissive) JP3 Pins 2 & 3 closed Transmit level set to programmable JP3 Pins 1 & 2 closed Internal clock source S2/1 Off External clock source S2/1 On 511 scrambler disabled S2/2 Off 511 scrambler enabled S2/2 On 200ms answer-back tone echo suppression S2/3 On enabled 200ms answer-back tone echo suppression S2/3 Off disabled RTS/CTS synchronization delay set to S2/4 On 150ms RTS/CTS synchronization delay set to 25ms S2/4 Off CD signal level set to -30dBm S2/5 Off CD signal level set to -45dBm S2/5 On Modem will disconnect immediately on low S2/6 Off DTR Modem will disconnect after 60 seconds of S2/6 On low DTR Do not squelch receiver during carrier S2/7 Off detection Squelch receiver during carrier detection S2/7 On Auto-answer enabled S2/8 On Auto-answer disabled S2/8 Off Wait for dial tone before dialing; comma S3/1 Off modifier pause time normal Dial without waiting for dial tone; comma S3/1 On modifier pause time set to 2s Modem will not disconnect when CD and RTS S3/2 Off are idle Modem will disconnect after 20 seconds of S3/2 On idle CD and RTS HANDSET POLARITY Setting JP2 Normal Pins 1 & 2, 3 & 4 closed Reversed Pins 1 & 3, 2 & 4 closed COMMAND SET Setting S3/3 S3/4 UDS proprietary Off Off V.25bis Bisync mode On Off V.25bis HDLC mode Off On V.25bis SDLC mode On On DISCONNECT DETECTION TIME Setting S4/1 S4/2 Disabled Off Off 8ms disconnect On Off 90ms disconnect Off On 200ms disconnect On On SPEAKER Setting S4/3 S4/4 On until connection On Off Always off Off Off On 30 seconds after Off On connection Always on On On LINE EQUALIZATION Setting S4/5 S4/6 No equalization Off On Normal equalization Off Off Normal equalization On On Maximum equalization On Off DISCONNECT DETECTION TIME Setting S4/7 S4/8 DSR follows DTR with 120ms On Off delay DSR normal Off Off DSR forced high Off On DSR follows RTS On On DIAGNOSTIC LED(S) LED Color Status Condition MR/RI Red On Power is on MR/RI Red Off Power is off MR/RI Red Blinking Phone is ringing TR Red On DTR signal is high TR Red Off DTR signal is low RS Red On RTS signal is high RS Red Off RTS signal is low CS Red On CTS signal is high CS Red Off CTS signal is low CD Red On Carrier signal has been detected CD Red Off Carrier signal has not been detected RD Red On Modem is receiving data RD Red Off Modem is not receiving data TD Red On Modem is transmitting data TD Red Off Modem is not transmitting data Note: The function of PR/TM is unidentified.