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Midian TRA Instruction Manual

Telephone to radio adapter
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Manual Revision: 2006-10-31
Software Version: 4.2 & Higher
TO ORDER – VISIT
TRA
T
ELEPHONE TO
INSTRUCTION MANUAL
American Communication Systems
Discover the Power of Communications
R
A
ADIO
DAPTER
http://www.ameradio.com
1
™

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  • Page 1 ELEPHONE TO ADIO DAPTER INSTRUCTION MANUAL Manual Revision: 2006-10-31 Software Version: 4.2 & Higher American Communication Systems Discover the Power of Communications ™ http://www.ameradio.com TO ORDER – VISIT...

  • Page 2: Specifications

    1. S PECIFICATIONS General Operating Voltage 11 - 16 VDC Standby Current 22 mA Off-hook Current 50 mA Ringing Current 400 mA Inputs Receive Input Level 50 mV RMS minimum Receive Input Impedance 100 KW Dynamic Range 25 dB Frequency Range 280-2800 Hz Sinad Ratio <8 dB...

  • Page 3: Installation Instructions

    Installation Instructions Midian products utilize CMOS integrated circuits, which are susceptible to damage from high static charges. Be sure to follow standard anti-static procedures when handling, including using grounded work stations and soldering irons and wearing grounding bracelets. Please be careful when selecting wire colors. It is sometimes difficult to distinguish between the grey, black, and brown wire colors under fluorescent lighting.

  • Page 4: Operation

    A dial tone should be heard, unless the building to pick up the line to which the TRA is connected, channel is busy, in which case a busy tone will be heard.

  • Page 5: Programmable Features

    PPLICATIONS connect and disconnect ANI sequences. There is an When a unit is called, the TRA generates a 70V RMS ring entry for Connect ANI, and one for Disconnect ANI. signal that activates the bell on the telephone. The TRA Each location can be programmed with 0 to 8 digits.
  • Page 6 COR Input of the TRA will delay after initial keyup before transmitting TRA. This, in turn, can be used to ring an operator or the ANI to allow the TRA-equipped trunked radio to receptionist.

  • Page 7: System Parameters

    (A channel for a number to be dialed. This feature is generally is considered idle if no carrier is sensed.) If the TRA used for In-Plant Paging systems. The Talk Beep fails to find an empty channel when the user comes feature enables an audible tone after paging tones off hook, the TRA generates a busy tone.
  • Page 8 For example, to program the connect ANI with the number This is a safety feature to prevent the TRA from 12A*, it would be necessary to enter the following tying up the system when a handset is inadvertently sequence: not placed back on hook.

  • Page 9: Theory Of Operation

    27 of the microprocessor. This path, one manufacturer or type of telephone to another. normally disabled, is enabled after the TRA sends its ANI. If the channel is busy, the microprocessor generates a 5.2.
  • Page 10 Horn Period. Channel Scanning. There are two types of channel scanning on the TRA, binary and step scanning. binary scan uses a three line address on P1-2, P1-6 and P1-12. When binary is employed remove Q11 and install a jumper from its base to its collector.

  • Page 11: Programming Tables

    7. P ROGRAMMING ABLES 1: R ABLE ROGRAMMING UNCTION , ANI TANDARD ELEPHONE NSWER TANDARD ELEPHONE NSWER 30 S ECOND EYUP FOR OCATING TOLEN ADIO & C ESET EMINDER EADBEAT ISABLE 2: O & F ABLE IMING EQUENCE ORMAT EQUENCE 1 + 1 Q &...
  • Page 12 4: ANI, D & D ABLE RANSPOND ECODE ODES NUSED NUSED OTOROLA IRST DTMF OTOROLA IRST OTOROLA IRST OTOROLA IRST 04 RTX-C OMPATIBLE OTOROLA IRST OTOROLA IRST ENERAL IRST OTOROLA IRST A† OTOROLA IRST OTOROLA IRST OTOROLA IRST OTOROLA IRST OTOROLA IRST IRST...
  • Page 13 8: GE T 99 T ABLE ABLE ROUP 9: GE Type 99 Table II ABLE 100’ ROUPS 592.5 607.5 712.5 IGIT 757.5 787.5 772.5 802.5 832.5 817.5 847.5 877.5 862.5 892.5 922.5 907.5 937.5 967.5 952.5 547.5 517.5 532.5 727.5 562.5 577.5 637.5...
  • Page 14 Enter Programming Access Code: 2 7 1 8 2 8 1 8 2 8 4 on telephone keypad (see Section 3) For this feature Enter These Codes Decode Number 1 (1-8 digits) plus Ring Code (1 digit) * 01 Enter the desired decode number plus Ring Code. The last digit entered will become the ring code.
  • Page 15 H) Auto Dial Time (0=disabled, 1-9=seconds) This limits the time between manually-entered digits. If enabled & the user pauses for more than this time, the TRA will automatically send the entered sequence. Decoding Parameters (9 digits) * 12 Ring Period (00-99 seconds) Enter a ring period of 00-99 seconds.
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