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Installation, Operation & 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...
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Telenetics Corporation 26772 Vista Terrace Drive Lake Forest, California 92630 (949)455-4000 Fax (949)455-4010 Document No. 49-0002-001 Rev.A...
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 NOTICE: The Canadian Department of Communications (DOC) label identifies certified equipment.
PRODUCT OVERVIEW The MIU2.4, MIU9.6, MIU14.4 & 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.
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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.
MIU case. Factory default is Power On mode. Other modes are set at the factory before shipment if requested. Other modes can be set in the field ~ call Telenetics for an instruction sheet. MIU Installation, Operation & Diagnostics...
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. AUTO DIAL FEATURE The dial-up modem modules inside your MIU include a software configured “Auto Dial”...
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...
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&Tn commands form part of the CCITT V.54 protocol and can be used for diagnostic testing.
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&T0 TERMINATE TEST IN PROGRESS If a V.54 loopback test is in progress as a result of executing an &Tn command, then the &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.
&T2 NO FUNCTION &T3 PERFORM LOCAL DIGITAL LOOPBACK (See Figure 3) The modem must be in the command state with connection established when this command is issued, otherwise an ERROR result code occurs. The AT&T3 command establishes a loopback of received data, after demodulation, and sends it back to the distant end.
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&T5 DENY RDL REQUESTS The modem will not respond to a remote digital loopback request from a distant modem. This will result in an error if the command is given while any V.54 test is active (&T1, &T3, &T6, &T7 or &T8). &T6 INITIATE REMOTE DIGITAL LOOPBACK (See Figure 4) The command is valid only if the modem is in the command state with a...
&T7 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&T4 command so that it will honor a remote digital loopback request.
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&T8 LOCAL LOOPBACK WITH SELF TEST (See Figure 6) The modem should be on hook. Enter AT&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 &S1 is in effect). A self test condition is entered, and an OK result code is sent to the DTE.
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ADDITIONAL TEST / DIAGNOSTICS COMMANDS... 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.
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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;...
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