I'm installing an XTL 5000 to a tone controlled systems (Zetron 4020). Dip switches seem ok for it's 2 wire ops yet I'm unable to receive radio audio at the control console. Receive and transmit at the radio are fine. Transmit using the control console is fine. The radio is programmed conventional, by frequency or repeater pair, showing the "DIR" indicator on the front panel.
Is there a simple oversight leading to loss of receive audio out on the Accessory 2 port, pins 1, 16 Is it a software programming function?
XTL 5000 Receive out Access 2 Pins 1 16 for Tone Remote Prob
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Re: XTL 5000 Receive out Access 2 Pins 1 16 for Tone Remote
If your talking about the DB25 connector on the radio,
you may be using the wrong pins. Remember that the
audio out of the speaker on this radio is hot on both
sides of the audio. Do not ground either wire point or
you will blow the radio audio output.
Try connecting to pin 20 for the high and pin 26 for the
low. Cap couple it to your tone remote adapter. You
might need to use a transformer to match the
impeadance. Just don't ground either side of the audio.
The radio volume control will set the audio level you
get out on these pins.
Jim
you may be using the wrong pins. Remember that the
audio out of the speaker on this radio is hot on both
sides of the audio. Do not ground either wire point or
you will blow the radio audio output.
Try connecting to pin 20 for the high and pin 26 for the
low. Cap couple it to your tone remote adapter. You
might need to use a transformer to match the
impeadance. Just don't ground either side of the audio.
The radio volume control will set the audio level you
get out on these pins.
Jim
raddoc wrote:I'm installing an XTL 5000 to a tone controlled systems (Zetron 4020). Dip switches seem ok for it's 2 wire ops yet I'm unable to receive radio audio at the control console. Receive and transmit at the radio are fine. Transmit using the control console is fine. The radio is programmed conventional, by frequency or repeater pair, showing the "DIR" indicator on the front panel.
Is there a simple oversight leading to loss of receive audio out on the Accessory 2 port, pins 1, 16 Is it a software programming function?
We have done the same thing (two XTL5000 Consolettes with TRC option attached to a Zetron 4048 with Universal DCC cards, using 2W TRC), so it is doable. I don't have the As-Built or manuals in front of me, but from memory, I would suggest the following:
1. Verify that the Consolette's TRC board is programmed for 2W (vs. 4W). The programming is done by DIP switches on the TRC board, one of which can be accessed without removing the XTL shelf and one of which cannot. The Consolette manual gives the switch information.
2. Unless you have wired a COR lead, verify that the DCC card to which this line is attached is programmed for VOX muting and, if so, check to be sure that someone didn't crank the VOX threshold sky-high. If you have wired a COR lead, verify that the DCC will unmute on COR when programmed as TRC; I'm not sure that it will (since that would be an unusual application).
3. Unlikely, but: verify that the console default volume setting for this line has not been set artificially low. (I think this affects only unselect audio, but without checking, I'm not positive.)
4. In the process, you should verify that the DCC is programmed for 2W, though the Zetron cards will receive on the Tx line even when programmed for 4W (in order to permit paralleled control), so this shouldn't be the cause of the problem.
Edit:
Now that I've glanced at Jim's response, I wonder if my assumption that you are using the Consolette (which is what I inferred from the "Accessory 2" connector reference, as the two DB25s on the back of the Consolette case are called Accessory 2 and Accessory 3), is correct.
If you are using an off-board TRA, then you'd have to make up a connection cable from the TRA to the almost square accessory connector on the back of the XTL radio itself; I'd have to get out the XTL installation manual to figure pinouts.
Which is it?
1. Verify that the Consolette's TRC board is programmed for 2W (vs. 4W). The programming is done by DIP switches on the TRC board, one of which can be accessed without removing the XTL shelf and one of which cannot. The Consolette manual gives the switch information.
2. Unless you have wired a COR lead, verify that the DCC card to which this line is attached is programmed for VOX muting and, if so, check to be sure that someone didn't crank the VOX threshold sky-high. If you have wired a COR lead, verify that the DCC will unmute on COR when programmed as TRC; I'm not sure that it will (since that would be an unusual application).
3. Unlikely, but: verify that the console default volume setting for this line has not been set artificially low. (I think this affects only unselect audio, but without checking, I'm not positive.)
4. In the process, you should verify that the DCC is programmed for 2W, though the Zetron cards will receive on the Tx line even when programmed for 4W (in order to permit paralleled control), so this shouldn't be the cause of the problem.
Edit:
Now that I've glanced at Jim's response, I wonder if my assumption that you are using the Consolette (which is what I inferred from the "Accessory 2" connector reference, as the two DB25s on the back of the Consolette case are called Accessory 2 and Accessory 3), is correct.
If you are using an off-board TRA, then you'd have to make up a connection cable from the TRA to the almost square accessory connector on the back of the XTL radio itself; I'd have to get out the XTL installation manual to figure pinouts.
Which is it?
Re: XTL 5000 Receive out Access 2 Pins 1 16 for Tone Remote
I may have given you some bad info on my first post here. I
went back to some info I have with me on the road.
The DB25 connector should be pins 24 for RX audio high and
pin 25 for RX audio low.
The 26 pin funky mongro connector on the rear of the radio
uses pin 20 for RX audio high and pin 26 for RX audio low.
As with most of the new radios, don't ground either wire.
There is DC voltage on both. You will have to use a
DC blocking capacitor to prevent problems.
Jim
went back to some info I have with me on the road.
The DB25 connector should be pins 24 for RX audio high and
pin 25 for RX audio low.
The 26 pin funky mongro connector on the rear of the radio
uses pin 20 for RX audio high and pin 26 for RX audio low.
As with most of the new radios, don't ground either wire.
There is DC voltage on both. You will have to use a
DC blocking capacitor to prevent problems.
Jim
The correct pin outs by the manual for the base station consolette is to use pins 1 and 16 for Receive+ and Receive - into a balanced 600 ohm line. It was working just fine on the Analog Astro previously installed in the same position.
I had a tech inject signal into the antenna and test that there wasn't a tone guard programming issue and that we got the recommended 775mv output with 1 Khz tone injection between the pins. So, I didn't adjust the tone card pot (I believe R545) and left it at factory default.
I pulled the dual channel tone remote card out of the 4020, checked each jumper and make sure they were for 2 wire ops and that it was VOX, not COR and they were ok.
I'm looking now to find out what the screw faced adjusting pots do (marked RX, 2W, 4W) on the zetron to see if it's just a level issue but haven't verified their function yet with a manual.
If no joy there, I'll have to signal inject at the radio and walk the entire telco line to see what the issue is but what's confounding is that tones to control and audio to transmit work fine and local mic audio goes down the telco lines and are heard in the Zetron console just fine.
I guess there is a remote chance that the 2W 4W dip switch is reversed (I have -7 on, -8 off as recommended for 2 W) but wouldn't expect it in a new radio.
Close, but no joy yet.
I had a tech inject signal into the antenna and test that there wasn't a tone guard programming issue and that we got the recommended 775mv output with 1 Khz tone injection between the pins. So, I didn't adjust the tone card pot (I believe R545) and left it at factory default.
I pulled the dual channel tone remote card out of the 4020, checked each jumper and make sure they were for 2 wire ops and that it was VOX, not COR and they were ok.
I'm looking now to find out what the screw faced adjusting pots do (marked RX, 2W, 4W) on the zetron to see if it's just a level issue but haven't verified their function yet with a manual.
If no joy there, I'll have to signal inject at the radio and walk the entire telco line to see what the issue is but what's confounding is that tones to control and audio to transmit work fine and local mic audio goes down the telco lines and are heard in the Zetron console just fine.
I guess there is a remote chance that the 2W 4W dip switch is reversed (I have -7 on, -8 off as recommended for 2 W) but wouldn't expect it in a new radio.
Close, but no joy yet.
1. If I get a chance, I'll dig out the books and tell you what the pots are for on the DCC, as well as the switch settings on the Consolette TRC board.
2. However, if you say you are hearing the local mike audio on the console, and presumably also talk permit tones and key press tones, that implies that the console is sufficiently wired to Consolette RX audio, and raises the question of whether there is a channelization programming error in the XTL?
(To verify: when Consolette local mike audio is received by the console, does the "Busy" LED come on for that line?)
2. However, if you say you are hearing the local mike audio on the console, and presumably also talk permit tones and key press tones, that implies that the console is sufficiently wired to Consolette RX audio, and raises the question of whether there is a channelization programming error in the XTL?
(To verify: when Consolette local mike audio is received by the console, does the "Busy" LED come on for that line?)
Oddly enough it seems to be the Zetron Dual Tone control card 2W receive pot. I have an adjacent radio that did just fine on a swap. After verifying that open squelch hiss made it down to our Zetron control panel, I swapped DB25 connectors and found that a known working radio was also not getting it's receive audio to be heard on the console. Went back to the operating position and turned the 2W face screw on the dual channel tone control card and finally got the squelch hiss to appear on the console and verified operations. The miscue was that mic audio didn't have this problem leading me to suspect there must be quite a difference between mic audio output and receive audio output but I'll deal with that later. It works finally and got operations going again.
Thanks for the input everyone
Thanks for the input everyone