XPR 8400 Rear Panel Microphone Wiring

[SpugEddy]

Hello Everybody. It's been a while, which is a good thing because it means either
everything is working just fine for me or everything I've tried has worked without
having to ask for help.
So, I recently purchased a very nice XPR 8400 Repeater. What I'm trying to do is
to wire a microphone and speaker to the rear accessory panel. I have a mint condition
TMN1005B desk mic that I would like to use. In the pictures posted here, here is
my assumption as to the wiring.
The Mic Green (PTT) to Repeater Pin 17 (GP5-1 PTT)
The Mic Black (GND) to Repeater Pin 12 (Audio Ground)
The Mic White (MON) to Repeater Pin 19 (GP5-2 MONITOR)
The Speaker (POS) to Repeater Pin 10 (SPKR +)
The Speaker (NEG) to Repeater Pin 9 (SPKR -)

Here is where I become unsure.
The Mic Brown (MIC HI) to Repeater Pin ?
The Mic Shield (MIC LO) to Repeater Pin ?

I'm posting this for the obvious reasons. It's much smarter to ask the people who know,
rather than use the trial and error method. With a nice piece of equipment, I'm not willing
to find out that my wiring was wrong after seeing the smoke released from some of the
components. Thank you for any help.

 

[mmckenna]

The Mic Brown (MIC HI) to Repeater Pin ? Pin 11
The Mic Shield (MIC LO) to Repeater Pin ? Pin 12

 

[RFI-EMI-GUY]

I may be wrong, but I don't think you can use local mike and speaker in the DMR digital mode..

 

[SpugEddy]

Thank you MMcKenna. As always, you're right there with the answer I seek.

RFI-EMI-GUY, I haven't decided to actually turn on DMR yet. I think I'm gonna
just go Analog for now. But thank you for the heads-up

 

[N1GTL]

There is nowhere to program a talk group ID into the repeater. RFI-EMI-GUY is correct.

 

[SpugEddy]

So last night I wired everything up and gave it a test. What happened was,
as soon as I plugged the connector in the back of the radio, it keyed the
channel. Pressing the PTT button didn't change anything. As soon as
I unplugged it, the radio was un-keyed. What should the setting be in the
Accessory section? Should "Active Level" be set to HIGH or LOW? Should
"Debounce" be checked or unchecked? For me, the help is a bit cryptic with
these options

 

[RFI-EMI-GUY]

There is nowhere to program a talk group ID into the repeater. RFI-EMI-GUY is correct.

Yeah, no VOCODER in the XPR8400. Its just pass through repeater and IPSC link for DMR.

You have to go to HYTera for that level of functionality.

 

[RFI-EMI-GUY]

So last night I wired everything up and gave it a test. What happened was,
as soon as I plugged the connector in the back of the radio, it keyed the
channel. Pressing the PTT button didn't change anything. As soon as
I unplugged it, the radio was un-keyed. What should the setting be in the
Accessory section? Should "Active Level" be set to HIGH or LOW? Should
"Debounce" be checked or unchecked? For me, the help is a bit cryptic with
these options

I would expect active low for the microphone PTT. I assume the radio has a pull up resistor. De Bounce is always good. Maybe something shorted in the mike? Get out the VOM.

 

[SpugEddy]

OK situation solved. Since I had a connector with only 4 conductors,
I tied the Audio Ground and Monitor Shield together. That was the
issue. I split them apart and now the MIC works just fine. Once again,
Thank you everybody for your help and input.

 

[N1GTL]

OK situation solved. Since I had a connector with only 4 conductors,
I tied the Audio Ground and Monitor Shield together. That was the
issue. I split them apart and now the MIC works just fine. Once again,
Thank you everybody for your help and input.

Can you elaborate as to what is working? Analog?

 

[SpugEddy]

N1GTL, right now I have the repeater setup for Analog only. I thought about
getting the "Dynamic Mixed Mode" option, but for $300+, I'll hold off to see
what kind of activity the system gets in Analog mode and what the users want.

 

[Project25_MASTR]

Yeah, no VOCODER in the XPR8400. Its just pass through repeater and IPSC link for DMR.

You have to go to HYTera for that level of functionality.

Should be two of them actually since the 8400 is two mobile bricks minus the control heads strapped together. However, just because the hardware is there doesn't mean the firmware supports it.

 

[RFI-EMI-GUY]

Should be two of them actually since the 8400 is two mobile bricks minus the control heads strapped together. However, just because the hardware is there doesn't mean the firmware supports it.

Yeah. No vocoder functionality . The bricks are simply providing modems for the turbo repeat mode. Hytera on the other hand, was more clever. .

 

[meech93]

Yeah. No vocoder functionality . The bricks are simply providing modems for the turbo repeat mode. Hytera on the other hand, was more clever. .

I have a question I would like to add to this thread. I have pretty much the same setup but with the XPR8400 in digital mode. Digital phone EID enabled for slot activation. It is interfaced with an Algo box using 4 wires: PTT pull to ground and Ground--Tx Audio and Audio ground. It worked great in analog mode. I switched the repeater to digital mode and added preconfigured group calling. It works but there is a 5 second delay in the PTT (pin 17) line before the repeater actually keys up. Is there a way to get that pin to instantly key up the repeater like when it was in analog mode?