M5300 to ITA2000 Tone Remote cable pin-out

[njtaz76]

Hello...

I am attempting to figure out the wiring to connect an M5300 (via 44-Pin option cable, using the DB25 connector) to an ITA2000 tone remote. I am attempting to connect this to a radio console.

After a few attempts at the wiring, I'm just lost I guess...

I have attached 2 PDFs, one for the M5300 wiring and one for the ITA user guide... any assistance as to which pins need to be tied together... thank you!

 

[motomeso]

What issues are you having? TX or RX? or both?

 

[njtaz76]

Yes! lol

TX and RX.... I really am not sure which pins need to match between the M5300 and ITA2000 Radio port interface...

Thank you

 

[motomeso]

Try this:

Harris Radio ITA2000
PTT Pin 21 PTT Pin 6
COR Pin 22 COR Pin 2
TX Audio Pin 11 Pin 12
RX Audio Pin 13 Pin 3
GND Pin 1 Pin 4

 

[njtaz76]

I will give that a shot.. THANK YOU!

 

[motomeso]

Just know there is no fixed level output on the Harris radio so your receive level will depend on the volume control of the radio. You'll also need to make these programming changes.

1. Under External IO Options, Program External Mute, active high output 1.
2. Program Aux Input 1 for PTT.

 

[motomeso]

You might be able to get a fixed discriminator output on pin 12 or 16 in which case you would put switch SW2-1 down instead of up on the ITA2000.

 

[njtaz76]

Thank you VERY VERY VERY MUCH! I was just doing all the wiring and then realized I would likely have to change the programming some.. and I forgot my programming license fob at home today... but I will be doing the reprogramming tomorrow morning and see how it goes. THANK YOU VERY MUCH!!

Off the wall question.... you don't know of any information on getting the information displayed on the LCD of the radio to be fed over the serial or db25 cable, do you? I've called TAC and have gotten the run around... Thanks again for your help!!

 

[motomeso]

No I don't believe you can anything like that.

Thank you VERY VERY VERY MUCH! I was just doing all the wiring and then realized I would likely have to change the programming some.. and I forgot my programming license fob at home today... but I will be doing the reprogramming tomorrow morning and see how it goes. THANK YOU VERY MUCH!!

Off the wall question.... you don't know of any information on getting the information displayed on the LCD of the radio to be fed over the serial or db25 cable, do you? I've called TAC and have gotten the run around... Thanks again for your help!!

 

[DisasterGuy]

There is a way to get data from the radio via serial. Catalyst Communications has done it but the custom built the programming interface

Sent from my SM-G900V using Tapatalk

 

[njtaz76]

Hi Motomeso,

So I have gotten the radio to transmit audio out to the console via the ITA2000 ... I did have to jumper RX Audio Ground to Pin 4 on the ITA2000.

I am not able to get the radio to transmit though. I have doublechecked M5300 Pin 21 to ITA Pin 6, External IO is has Aux Input 1 to PTT, I put the jumper (JU2) on the ITA2000 to the A position and back to B. Nothing seems to be working, as the radio will not go into PTT mode.

Any other thoughts? I have to check the voltage output still from the ITA, as that will be my next step once I get a volt meter handy.

THANK YOU!


DisasterGuy, I know there is a way over the serial, and that's what I was trying to figure out. More of a fun project for me, but I cannot seem to figure out the command to activate it. Thanks

 

[motomeso]

Hi njtaz76,

When you PTT on your console do you see the PTT light come on the ITA2000? If you jumper pin 21 of the M5300 to ground does the radio PTT?

 

[njtaz76]

I'm not even utilizing the console to TX ... using a mic attached to ITA2000.

Yes, when I jumper 21 to ground, it goes into TX mode..

 

[njtaz76]

So, in testing:

with JU2 set to B on the ITA, it is always outputting 13v and when keys up, it drops to near 0. If I switch it to A, then its 0v and jumps to 13v.... but will not key up radio...

 

[njtaz76]

I think I narrowed it down to a bad wire between the ITA and the radio DB25. I'll report back once I replace all of that. THANK YOU!

 

[njtaz76]

Just an update, on Friday I have it mostly working except that I am not getting audio out yet to the radio. I'm going to check all that this morning and will send an update. THANKS AGAIN!!!!

 

[motomeso]

Try pins 15 or 24 and see if either of those work.

Just an update, on Friday I have it mostly working except that I am not getting audio out yet to the radio. I'm going to check all that this morning and will send an update. THANKS AGAIN!!!!

 

[njtaz76]

I ended up going with pin 24. Everything is working now. I will post my final pinout. I also had to ground the RX and TX audio. I am hoping it is the same on the XG-25M as I need to get that working next. I will test the cabling on there tomorrow. Thank you again !!

 

[motomeso]

Excellent! The ITA2000 is suppose to tie the TX & RX low to Pin 4 internally but I guess that wasn't the case. I'm glad you got it up and running.

I ended up going with pin 24. Everything is working now. I will post my final pinout. I also had to ground the RX and TX audio. I am hoping it is the same on the XG-25M as I need to get that working next. I will test the cabling on there tomorrow. Thank you again !!