Telenetics MIU14.4 Network Card User Manual
Contents
1. 12VDC 24VDC 125VDC 65mA 27mA 7 5mA MIU9 6 12VDC 24VDC 125VDC 115mA 57mA 11mA MIU14 4 12VDC 24VDC 125VDC 160mA 69mA 14mA MIU28 8 12VDC 24VDC 125VDC 205mA 125mA 16mA Surge Protection Power Supply Analog Line Digital Line Operating Temperature Operating Humidity Storage Temperature MIU Installation Operation amp Diagnostics 120VAC 220VAC 6 5mA 5 5mA 120VAC 220VAC 10mA IMA 120VAC 220VAC 12mA IMA 120VAC 220VAC 15mA 11mA 8kVrms SkVac MIU2 4 amp 9 6 3 75kVac MIU14 4 amp 28 8 ESD 10kV 40 to 85 deg C 0 to 90 non condensing 55 to 100 deg C Edition March 30 1998 Page 5 4 POWER MODES Consumption available to the modem Sleep If the modem is on hook for a Approx 6mA predetermined period PE2400 5 seconds PE2496 PE14 4 amp PE28 8 software configured Set S24 to desired delay in seconds it will drop to a low current mode The modem will instantly wake up to full power by either an incoming ring signal or any transmit data TxD signal Power Down If the modem is on hook for 30 seconds Approx 20uA it will automatically turn off The modem will automatically turn on to full power within 400ms of receiving a DTR signal or an incoming call The power mode is set by a dip switch on the Pony Express Modem Module inside the MIU case Factory default is Power On mode Other modes are set at the factory before shipment if requested2. NOTICE The Canadian Department of Communications DOC label identifies certified equipment This certification means that the equipment meets certain telecommunications network protective operational and safety requirements The department does not guarantee the equipment will operate to the user s satisfaction Before installing this equipment make sure you are permitted to connect it to the facilities of the local telecommunications company You must install the equipment using an acceptable method of connection In some cases you may also extend the company s inside wiring for single line individual service by means of certified connector assembly telephone extension cord You should be aware however that compliance with the above conditions may not prevent degradation of service in some situations Repairs to certified equipment should be made by an authorized Canadian maintenance facility designed by the supplier Any repairs or alterations made by a user to this equipment or equipment malfunctions may give the telephone communications company cause to request the user to disconnect the equipment For your own protection make sure that the electrical ground connections of the power utility telephone lines and internal metallic water pipe system if present are connected together This precaution may be particularly important in rural areas Caution Do not attempt to make electrical ground connections yourself contact the appr
3. Other modes can be set in the field call Telenetics for an instruction sheet MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 6 5 MODEM SPECIFICATIONS Standards Modem Line Speed Asynch DTE Rates above Modem Line Speeds Error Correction amp Data Compression MIU2 4 V 22bis V 22 Bell212A Bell 103 2400bps 1200bps 300bps MIU Installation Operation amp Diagnostics MIU9 6 V 22bis V 22 Bell212A Bell 103 2400bps 1200bps 300bps 19200bps 9600bps 4800bps MNP 2 3 5 amp 10 V 42 V 42bis MIU14 4 V 32bis V 32 V 22bis V 22 Bell212A Bell 103 14400bps 9600bps 4800bps 2400bps 1200bps 300bps 57600bps 38400bps 19200bps MNP 2 3 5 amp 10 V 42 V 42bis Edition March 30 1998 V 34 V 32bis V 32 V 22bis V 22 Bell212A Bell 103 28800bps 19200bps 14400bps 9600bps 4800bps 2400bps 1200bps 300bps 115200bps 57600bps 38400bps 19200bps MNP 2 3 5 amp 10 V 42 V 42bis Page 7 6 POWER CONNECTIONS MIU2 4 MIU9 6 MIU9 6L MIU14 4 MIU14 4L MIU28 8 MIU202T MIUS 6FP MIUS 6FPD 3 Pin C omnector Supplied with unit AC live amp neutral G d 2 S DC ve amp ve roun non polarized 1 Connect to any AC or DC Voltage Source in the Range of 48V to 220V MIU Models as above but with suffix LV eg MIU2 4 LV Power Ground GE Connect tor DC Voltage Source in the Range of 9
4. amp Diagnostics Edition March 30 1998 Page 10 Telenetis 9 LED INDICATOR The MIU has a single LED that will indicate the following conditions gt Blinking POWER ON e Steady MODEM CONNECTED CARRIER DETECT 10 AUTO RESET FEATURE The dial up modem modules inside your MIU include an Auto Reset feature If the modem configuration is lost for any reason it can be restored by dialing the modem and allowing it to ring 4 to 6 times The Auto Reset feature is enabled and disabled by a dip switch on the modem module Your MIU will have been shipped with the Auto Reset mode active unless otherwise specified at the time of ordering Please consult Telenetics if you wish to open up your MIU to disable Auto Reset 11 AUTO DIAL FEATURE The dial up modem modules inside your MIU include a software configured Auto Dial feature Command AT D1 will enable Auto Dial When DTR goes from an OFF to ON condition and D1 is set the modem will auto dial the phone number stored in location amp Z0 up to 45 digits Command D0 default will disable the Auto Dial feature MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 11 12 OUTLINE DRAWING amp MOUNTING Ge Optional Wall Mounting Brackets Part No 56 0002 to be installed by user if required 0 125 inches dia IMPORTANT 4 5 inches WHEN AFFIXING MOUNTING BRACKETS TO BOTTOM OF UNI
5. 0V to 36VDC 1 Positive S DC Voltage 3 Pin Cornector Supplied with unit IMPORTANT NOTES 1 Wire colors shown are for optional Telenetics cable if ordered 2 Customer supplied cable must be suitable for site environmental conditions 3 Surge protection only guaranteed if ground wire gt 18 AWG 4 Solidly earthed ground connection required to guarantee surge protection 5 Screw terminals accept 26 to 16 AWG drb mydocs miumarual power connections 0349 98 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 8 7 SERIAL DATA PORT PIN OUTS RS232C is the most commonly used serial data interface and defines the Physical Functional and Electrical boundaries between two or more communicating devices D SHAPED SERIAL PORT CONNECTORS are usually used to interconnect DTEs computers controllers etc and DCEs modems converters etc 14 3 15 3 16 4 1 i 5 6 18 e 7 2 19 8 3 20 A 9 3 21 5 22 a 23 10 11 24 25 12 13 DBS DB25 Signal Pin Source CD Carrier Detect 8 MODEM RXD Receive Data 3 MODEM TXD Transmit Data 2 TERMINAL DTR Data Term l Ready 20 TERMINAL Signal Ground 7 N A DSR Data Set Ready 6 MODEM RTS Ready to Send 4 TERMINAL CTS Clear to Send 5 MODEM RI Ring Indication 22 MODEM Dial Modems Onhy MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 9 8 DIP SWITCH SETTINGS Not Applicable MIU Installation Operation
6. amp LO amp P0 amp Q0 amp RO amp S0 amp X0 amp YO S00 001 S01 000 S02 043 S03 013 S04 010 S05 008 S06 002 S07 030 S08 002 S09 006 S10 014 S12 050 S14 AAH S16 00H S S18 000 S21 00H S22 76H S23 15H S25 005 S26 001 S27 40H S28 00H STORED PROFILE 0 B1 E1 L2 M1 QO VI X4 YO amp CI amp D0 amp G0 amp J0 amp LO amp P0 amp Q0 amp RO ESO amp X0 S00 001 S14 AAH S18 000 S21 00H S22 76H S23 17H S25 005 26 001 S27 40H S28 00H STORED PROFILE 1 B1 E1 L2 M1 QO VI X4 YO amp C0 amp D0 amp G0 amp J0 amp LO amp P0 amp Q0 amp RO amp S0 amp X0 S00 000 S14 AAH 18 000 S21 00H S22 76H S23 17H S25 005 26 001 S27 40H S28 00H TELEPHONE NUMBERS amp Z0 amp Z1 amp Z2 amp Z3 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 14 14 FACTORY CONFIGURATION MIU9 6 ACTIVE PROFILE B1 El LI MI N1 QOT VI WO X4 YO amp CI amp D2 amp G0 amp J0 amp K3 amp Q5 amp RI amp S0 amp T5 amp X0 amp YO S00 001 S01 000 S02 043 S03 013 S04 010 S05 008 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S25 005 26 001 S36 007 S37 000 S38 020 S44 020 S46 138 S48 007 S95 000 STORED PROFILE 0 B1 El LI MI NI QOT VI WO X4 YO amp CI amp D2 amp G0 amp J0 amp K3 amp Q5 amp RI amp S0 amp T5 amp X0 S00 001 S02 043 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S36 007 S37 000 S40 168 S41 195 S46 138 S95 046 STORED PROFILE 1 B1 El LI MI N1 QOT VI WO X4 YO amp CI amp D2 am
7. ATE LOCAL ANALOG LOOPBACK Edition March 30 1998 Page 24 aen Gol e RS232 DARIO Unit Figure 3 PERFORM LOCAL DIGITAL LOOPBACK Remote Modem Modem Under Test in RDL Telco Line Controller Data Pump rta AT amp T6 Figure 4 INITIATE REMOTE DIGITAL LOOPBACK MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 25 Remote Modem inRDL Mode Loop Bak Controller pa Data Pump d si w Unit nl Rx Digital In Local Modem in Self Test Mode Trans mit Self Test Circuit Modem Controller Taleo Data Purnp bee ine E k Unit der Unit Receive Self Test Circuit Figure 5 REMOTE DIGITAL LOOPBACK WITH LOCAL SELF TEST Trans mit Self Test Circuit Modem Controller RIA AT amp T8 Data Pump k ae ine ee Unit Monae Connected Receive Self Test Circuit Figure 6 LOCAL ANALOG LOOPBACK WITH SELF TEST MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 26 Telenetis ADDITIONAL TEST DIAGNOSTICS COMMANDS L Q S86 RECEIVED SIGNAL LEVEL Returns a value dBm which indicates the received signal level at modem DATA PUMP interface This value is determined by the loss gain of modem Telco Interface circuit dB at the Tip Ring input to the modem Typical value should be 25dBm to 35dBm for most Telco connections RECEIVED LINE SIGNAL QUALITY Reports the line signal quality at the modem DATA PUMP interface This signal is also dependent on the
8. DAA circuit Telco Interface Returns the higher order byte of the EQM Eye Quality Monitor is the filter squared magnitude of the error vector Typical value should be below 10 The lower the number the better the performance from the modem ERROR response if NO connection to remote modem In amp T1 modem Q will be 0 CONNECTION FAILURE CAUSE S86 can help determine the cause of a connection failure When the modem issues a NO CARRIER result code a value is written to this register To read this register following the connection failure issue ATS86 lt CR gt The modem will report one of the following values MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 27 10 11 12 13 14 15 Normal hang up no error occurred Physical carrier loss Loss of Carrier Feature negotiation failed to detect presence of another V 42 error control modem at other end Other error control modem did not respond to feature negotiation message sent by this modem Other modem is synchronous only this modem is asynchronous only Modems could not find a common framing technique Modems could not find a protocol in common Feature negotiation message sent by other modem incorrect Synchronous information data of flags not received from other modem Normal disconnect initiated by other modem Other modem did not respond after many transmissions of the same message Modem made 10 attempts then hung up P
9. T DO NOT REMOVE ALL 4 SCREWS FROM BASE OF UNIT AT ONE TIME IF BASE SEPARATES FROM TOP COVER INTERNAL PARTS MAY BE DAMAGED 53 inches haee 4inches 4 5 inches Pa 5 inches Telenetics Corporation 1995 drb mwydocs manuals miu mount 328 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 12 Telenetis 13 MODEM CONFIGURATION Telenetics dial and leased line modems are based upon Rockwell chipsets These chipsets contain Rockwell s AT command set A summary of the Rockwell command set for your MIU modem is provided in Book 2 Unless otherwise specified at the time of order your modem will have left the Telenetics factory in the configuration detailed on the following pages The Telenetics factory configuration differs from the Rockwell default configuration as follows amp C0 Rockwell Default Carrier Detect CD always ON amp C1 Telenetics Factory Carrier Detect CD only ON when modem connected on hook S0 0 Rockwell Default Auto Answer OFF S0 1 Telenetics Factory Auto Answer on first ring You can review the configuration of your modem by entering AT amp V lt CR gt You can restore the Rockwell factory configuration by entering AT amp F amp W MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 13 14 FACTORY CONFIGURATION MIU2 4 ACTIVE PROFILE B1 E1 L2 M1 QO VI X4 YO amp CI amp D0 amp G0 amp J0
10. Teleneic Installation Operation amp Diagnostics for the MIU2 4 MIU9 6 MIU14 4 MIU28 8 Industrial Grade Dial Modems Book 1 of 2 See Book 2 for AT Commands Document No 49 0002 001 Rev A Teleneic Telenetics Corporation 26772 Vista Terrace Drive Lake Forest California 92630 949 455 4000 Fax 949 455 4010 Document No 49 0002 001 Rev A TABLE of CONTENTS k STANDARDS elia ee Page 2 25 PRODUCEOVERVIEW acacia Page 3 3 GENERAL PRODUCT SPECIFICATIONS er Page 5 d POWER MODES ege rai Page 6 5 MODEM SPECIFICATIONS siii Page 7 Gr POWER CONNECTIONS e a e E ele Page 8 7 SERIAL DATA PORT PIN OUTS eerrrrrrrrerereieecenze nine Page 9 5 SOUP SWE Hes pellerossa Page 10 Ee DN OR H AT EE Page 11 10 AUTO RESET FEATURE iii Page 11 11 AUTO DIAL BEAT URE aiestncnsivercoetsancesccsbevideesedbeorseiessiacheecrnaesns Page 11 12 OUTLINE DRAWING amp MOUNTING inn Page 12 13 MODEM CONFIGURATION rec rrerrrrreereeereeicezinzeene Page 13 14 FACTORY CONFIGURATION ceccssccsseceeeeeeceescesseeeees Page 14 17 15 keete dE ie Page 18 28 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 1 Telenetis 1 STANDARDS All Telenetics dial up modems are designed to meet the following Standards USA FCC Part 15 Class A and Part 68 Canada DOC Standards CS 01 CS 02 and CS 03 CANADIAN DEPARTMENT OF COMMUNICATION NOTICE
11. amp T3 amp T6 amp T7 or amp T8 ERROR If not in on line command state ERROR If the RDL signal is not acknowledged MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 22 a Telenet amp T8 LOCAL LOOPBACK WITH SELF TEST See Figure 6 The modem should be on hook Enter AT amp T8 to configure the modem for analog loopback and self test The test timer is started at the time indicated by S18 DSR is turned off if amp S1 is in effect A self test condition is entered and an OK result code is sent to the DTE During the test the modem sends a test message and counts errors in the looped back signal The test is terminated when the timer times out S18 or the amp TO HO or Z command is issued When the test is terminated the three digit error count is sent to the DTE An OK result code follows the error count RESULT CODE DESCRIPTION OK If a test state is entered OK After error count is sent to DTE ERROR If any other V 54 test is active amp T1 amp T3 amp T6 amp T7 or if on line MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 23 Data Interface R5232 or TTL Data Interface R5232 MIU Installation Operation amp Diagnostics Figure 1 Modem Modem Controller Data Pump Figure 2 Telco Line Controller Telco Data Pump dee Interface Unit TYPICAL MODEM CONFIGURATION Telco Line Tel Interface HH Interface Not Connected INITI
12. command state with connection established when this command is issued otherwise an ERROR result code occurs The AT amp T3 command establishes a loopback of received data after demodulation and sends it back to the distant end The modem is configured for local digital loopback DSR is turned off if amp S1 is in effect the test timer is started with the value in S18 and an OK result code is sent to the DTE If S18 contains a 0 the test must be terminated by a amp TO HO or Z command The latter two result in the modem going on hook If S18 does not contain 0 the test is terminated after the number of seconds stored in S18 RESULT CODE DESCRIPTION OK After 2 second delay ERROR If any other self test is active amp TI amp T6 amp T7 or amp T8 or if in idle state When test is terminated GRANT REMOTE DIGITAL LOOPBACK RDL REQUESTS When in the on line state the modem will honor a remote digital loopback request from a distant modem if it occurs This will result in an ERROR if the command is given while any V 54 test is active amp T1 amp T3 amp T6 amp T7 or amp T8 NOTE There are data patterns that may cause a Remote Digital Loopback conditions Care should be given to the type of data being received so that no RDL modes will be initiated MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 20 amp T5 amp T6 DENY RDL REQUESTS The modem will not respond to a remote digital loo
13. in on line command state ERROR If the RDL signal is not acknowledged MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 21 amp T7 ee Telenetic INITIATE RDL WITH LOCAL SELF TEST See Figure 5 This is a system test end to end The command is valid only if the modems are in the command state with a connection established Configure the remote modem with an AT amp T4 command so that it will honor a remote digital loopback request Enter AT amp T7 at the local modem and it will send a digital loopback request to the remote modem After the RDL acknowledgment signal is received from the remote modem DSR is turned off if amp S1 is in effect the on line state is entered an OK result code is sent to the DTE and the test timer is set to the value in S18 While the test is active the local modem sends a test message to the remote modem and counts the errors in the received looped back signal The modems stay in the command state during the test When the test is terminated except by a loss of carrier the local modem sends the release signal to the remote modem as in amp T6 and reports the three digit error count to the DTE The information text is followed by an OK result code The test is terminated by loss of carrier or an HO amp TO or Z command and by the S18 timer running out RESULT CODES DESCRIPTION OK When command executed is started OK After error count is sent to DTE amp T1
14. ing an amp Tn command then the amp T0 command will cause that test to be terminated provided that the modem is in the command state or a V 54 state that accepts commands from the DTE See specific amp Tn command descriptions for termination actions amp T1 INITIATE LOCAL ANALOG LOOPBACK See Figure 2 When the AT amp T1 command is entered the modem goes on hook and configures itself for analog loopback DSR is turned off if amp SI is in effect the analog loopback state is entered and the test timer is set to the value in S18 A connect result code is sent to the DTE and the test timer then begins its count down The test terminates when the test timer expires If S18 equals 0 then the test must be terminated by an amp T0 HO or Z command While any command may be entered while the modem is in this test state the modem response is not specified except for HO amp TO and Z any of which will terminate the test Upon termination of the test the modem enters the command state RESULT CODE DESCRIPTION CONNECT When local analog loopback state is entered ERROR If any other amp Tn test is active except amp TO or if in the on line command State OK After test is stopped by test timer the HO command or the amp T0 command MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 19 amp T2 amp T3 amp T4 NO FUNCTION PERFORM LOCAL DIGITAL LOOPBACK See Figure 3 The modem must be in the
15. mp YO S00 001 S01 000 S02 043 S03 013 S04 010 S05 008 S06 002 S07 030 S08 002 S09 006 S10 014 S11 255 12 050 S18 000 S25 005 26 001 S36 007 S37 000 S38 020 S46 138 S48 007 S95 000 STORED PROFILE 0 BO El LI MI N1 QOT VI WO X4 YO amp CI amp D0 amp G2 amp J0 amp K3 amp Q5 amp RI amp S0 amp T4 amp X0 S00 001 S02 043 S06 002 S07 030 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S36 007 S37 000 S40 105 S41 003 S46 138 S95 000 STORED PROFILE 1 BO El LI MI N1 QOT V1 WO X4 YO SCT amp D0 amp G2 amp J0 amp K3 amp Q5 amp RI amp S0 amp T4 amp X0 S00 001 S02 043 S06 002 S07 030 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S36 007 S37 000 S40 105 S41 003 S46 138 S95 000 TELEPHONE NUMBERS 0 2 3 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 17 Telenetis 15 DIAGNOSTICS The following pages provide software and hardware techniques for diagnosing communication problems and thereby isolating the problem at either the local modem the remote modem or the interconnecting line The following AT amp Tn commands form part of the CCITT V 54 protocol and can be used for diagnostic testing Note amp Tn commands can only be used when the modem is configured for SOU lt CR gt unbuffered direct asynchronous mode MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 18 amp T0 TERMINATE TEST IN PROGRESS If a V 54 loopback test is in progress as a result of execut
16. opriate electric inspection authority or an electrician NOTICE The load number LN assigned to each terminal device denotes the percentage of the total load to the telephone loop used by the device to prevent overloading The termination on a loop may consist of any combination of devices subject to the requirement that the total of the load numbers of all the devices does not exceed 100 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 2 Telenetis 2 PRODUCT OVERVIEW The MIU2 4 MIU9 6 MIU14 4 amp MIU28 8 are industrial grade dial modems for connection to the Public Switched Telephone Network They can be powered from a wide range of AC and DC power supplies they are internally surge protected on both the power and analog lines and they will operate in temperatures from 40 to 85 deg C Internally each unit consists of a baseboard and a communication module The baseboard includes the power supply regulation and surge protection The communication module is a Telenetics Pony Express Dial Modem Module The MIU is packaged specifically for the harsh environments found in utility substations and industrial facilities Though functionally similar to commercial modems the MIU includes special features that make it particularly well suited for utility and industrial applications Environment The MIU has been designed specifically for use in harsh environments In addition to an extended tempera
17. p G0 amp J0 amp K3 amp Q5 amp RI amp S0 amp T5 amp X0 S00 001 S02 043 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S36 007 S37 000 S40 168 S41 195 S46 138 S95 000 TELEPHONE NUMBERS 0 2 3 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 15 14 FACTORY CONFIGURATION MIU14 4 ACTIVE PROFILE B1 E1 LI MI NI QO T V1 WO X4 YO amp CI amp D2 amp G0 amp J0 amp K3 amp Q5 amp RI amp S0 amp T5 amp X0 amp YO S00 001 S01 000 S02 043 S03 013 S04 010 S05 008 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S25 005 S26 001 S36 007 S37 000 S38 020 S44 020 S46 138 S48 007 S95 000 STORED PROFILE 0 B1 El LI MI N1 QOT VI WO X4 YO amp CI amp D2 amp G0 amp J0 amp K3 amp Q5 amp RI amp S0 amp T5 amp X0 S00 001 S02 043 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S36 007 S37 000 S40 168 S41 195 S46 138 S95 046 STORED PROFILE 1 B1 El LI MI N1 QOT VI WO X4 YO amp CI amp D2 amp G0 amp J0 amp K3 amp Q5 amp RI amp S0 amp T5 amp X0 S00 001 S02 043 S06 002 S07 050 S08 002 S09 006 S10 014 S11 095 12 050 S18 000 S36 007 S37 000 S40 168 S41 195 S46 138 S95 000 TELEPHONE NUMBERS 0 I 2 3 MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 16 14 FACTORY CONFIGURATION MIU28 8 ACTIVE PROFILE BO El LI MI NI QO T VI WO X4 YO amp CI amp D0 amp G2 amp J0 amp K3 amp Q5 amp RI amp S0 amp T4 amp X0 a
18. pback request from a distant modem This will result in an error if the command is given while any V 54 test is active amp T1 amp T3 amp T6 amp T7 or amp T8 INITIATE REMOTE DIGITAL LOOPBACK See Figure 4 The command is valid only if the modem is in the command state with a connection established Configure the modem under test with an AT amp T4 command so that it will honor a remote digital loopback request Enter AT amp T6 at the local modem and it will send a remote digital loopback request to the remote modem After the RDL acknowledgement signal is received from the remote modem DSR is turned off if amp S1 is in effect the on line state is entered a CONNECT result code is sent to the DTE and the test timer is set to the value in S18 If the local modem does not receive the RDL acknowledgment signal from the remote end in three seconds it sends an ERROR result code to the DTE and returns to the command state The local modem sends the signal to release the remote digital loopback when the test is terminated The test may be terminated by the HO Z or amp TO command The test will also terminate when the test timer expires sending the modem to the command state or carrier is lost causing a NO CARRIER result code and the modem to go on hook in the command state RESULT CODE DESCRIPTION CONNECT When on line state is entered ERROR If any V 54 test is active amp T1 amp T3 amp T6 amp T8 ERROR If not
19. rotocol violation occurred Compression failure Note Multiple occurrences may contribute to a NO CARRIER message S86 records the first event that occurred MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 28 NOTES MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 29
20. ture range 40 to 85 C the MIU includes surge shock vibration and safety features superior to those of conventional commercial modems Power Supply The MIU can be powered from a broad range of AC and DC power supplies such as an auxiliary supply eg 12VDC from another piece of equipment 125VDC from a station battery or a standard 120VAC Low Power The MIU dial modem can be configured to enter into a power down mode In this mode an MIU will consume only a small fraction of its active power while waiting for either controller or telephone activity MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 3 Telenetis Industrial The MIU is packaged in a rugged compact non metallic ABS enclosure Designed for unmanned locations the MIUs do not include the array of pushbuttons and LEDs normally associated with consumer type modems Configuration is by dip switches and or software AT commands Standard industrial connectors for data analog and power interfaces allow reliable interconnection to other industrial components MIU Installation Operation amp Diagnostics Edition March 30 1998 Page 4 Telenetis 3 GENERAL PRODUCT SPECIFICATIONS Dimensions Weight Voltage Supply Standard Model 5 3 x 4 0 x 1 375 inches 1 lb 40 to 270VDC 40 to 270V AC 50 60Hz LV Model Suffix LV 9 to 36VDC Current Requirements See Section 4 for Power Down Modes MIU2 4
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