Installing a link to an MTR2000

[Equinox]

I've got a guy asking me about installing a link to an MTR2000. He cannot locate COR. I see some places on the J5 system plug that might be it, but am not sure. He's also wondering about the part number for the plug to J5. Any help?

[Will]

Everything is available on the DB25 connector except the 13 volts DC.

[wavetar]

The system connector (J5) provides an active 'high' COR on pin B4. If you need it to be active 'low', then run it into a simple transistor switching circuit.

If the station is equipped with a wild card, you can have an active 'low' COR via relay closure on pins B3 or C3, and via open collector on B21.

There is a generic wiring kit for interfacing to the system connector. It consists of a housing shell for connection to the 96-pin backplane connector and 30 wires (24 gauge) with system connector pins on one end, and unterminated on the other. Part# TKN9205A.

Todd

[Astro Spectra]

This paper might be of interest:

http://www.repeater-builder.com/motorol ... tr2000.pdf

[chipjumper]

I see the 96 pin connector on the back but we have our MTR2000 connected to offsite dispatch via a two wires that go into a 6 or 8 pint black connector just above the 96 pin. What is that? Anyone know the pin out for that?

[psapengineer]

I had to look at doing this a couple of years ago. If I'm recalling this correctly, there is an option card that is used to bring things like COR and PTT out to a rear connector. The option card slides into the card bay in the center of the radio. I t hink it's part number starts something like CLN...... The main purpose of the option card is to bring discrete inputs and outputs out to and from the rear of the radio. The option card is not installed in most radios since its not needed for repeater or tone control.

[Dan562]

You've got a few options for interfacing a COR Output on the MTR2000 Base and/or Repeater Station. You should first have the MTR Instruction Manual to refer to, go to the Tab labeled Station Backplane and start reading that section. On the backside of the station, there's a DB25 connector labeled 6809/MRTI for either Trunking or the Telephone Interconnect Interface that provides almost everything except the +14.2 VDC.

Your second alternative would be to use the System Connector J5 and purchase a TKN9205A System Connector Plug with 30 Green wires 24 AWG with the Pins crimped on one end that insert into the P5 Plug. The other ends are designed to be punched down into a Telco Demarc Block, Motorola Part # 0183652P01 or equivalent that allow you interface to the outside world. Watch what may seem like active signal Inputs and Outputs as they could require additional hardware such as the AUX I / O Module. These would labeled either WCO or WCI.

There’s a third alternative by ordering (1) FRU CLN1206A AUX I / O Module, (1) TKN9205A and (1) 0183652P01 Telco Demarc Block. You’ll be required to install the CLN6698 into the top module slot of the mechanical card cage chassis, READ the station’s configuration, enable the CLN6698 in the station’s software configuration and WRITE this info back into the station allowing it to do the Reset and Initialization recognizing the Wild Card module. Once this is accomplished you will be required to Write software scripting tables for the WCO (Outputs) and WCI (Inputs) associated with the System Connector J5 Pins. While scripting do not enable any of the I / O circles with Black dots otherwise you will create major problems associated with the Wild Card. Also watch the Wild Card Action and In Action Table scripting, as it is a little confusing at first till you get the hang of the logic process scripting.

Dan

[wavetar]

I see the 96 pin connector on the back but we have our MTR2000 connected to offsite dispatch via a two wires that go into a 6 or 8 pint black connector just above the 96 pin. What is that? Anyone know the pin out for that?

To answer this question, that connector is the 'wireline' connector for tone remote control. This allows complete station control without using the 96-pin backplane connector for anything. You need a wireline control card in the station to use this, which you obviously have.

Todd

[chipjumper]

I see the wireline connector in the back. I see that two wires coming out of it go into an external "RJ" external surface mount box. The wires from the remote telephone line (from the county dispatch) and the tone remote handset go into it.

I'm assuming that the tone remote and the remote line from the county join together in that little box and then go to the wireline connector at the back of the MTR2000. Can I add a third set to the little box? We would like to put another tone remote handset in a different room.

Would adding a third or forth tone remote to the wireline be dangerous?

[Dan562]

Adding more than 1 TRC Console is perfectly okay just as long as you Jumper the additional Consoles as High Impedance preventing any Telco Line (600-Ohm) loading.