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Old 16-12-2019, 13:34   #1
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Trouble with antenna

Hello all,

I'm using a Garmin GPS 19xHVS antenna, and I'm trying to use Putty to test a communication system. So far all I've been able to get is garbage output through putty no matter which baud rate I choose. I've attached screenshots and images of how everything is connected. Could someone on here recommend to me a possible solution? Thanks in advance.

The wires are setup in the following configuration:

Red - power, connected to a +12.1V power supply
Black/Orange/OrangeWhite - ground, accessory on, RxB, connected to ground
Purple - PPS, NC to anything beyond the terminal block (intentional)
WhiteRed- TxB, NC to anything beyond the terminal block (intentional).
Grey- TxA, connected to a DB9 converter
White- RxA, connected to a DB9 converter

The DB9 converter is then run to a USB serial adapter, which is plugged into the PC. Hopefully this is enough information. I've also attached a link to the manual for the 19XHVS.
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Old 16-12-2019, 14:42   #2
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Re: Trouble with antenna

Grey to DB9 pin 2?
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Old 16-12-2019, 15:02   #3
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Re: Trouble with antenna

Welcome aboard CF, mkomm2021.

Do you have another USB serial adapter to try. I have found just using another brand of USB serial adapter occasionally solves these sort of problems. At one time I used to carry a handful of different USB serial adapters and keep trying them until one would work.

Hope you get it solved.
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Old 16-12-2019, 15:12   #4
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Re: Trouble with antenna

Is that an RS-232 USB/Serial adapter? Looks like the Keyspan. Should really use an RS-422/485 adapter, but a 232 will usually work.

Can't tell from the photo looks like grey/white are connected to 1/2 of the DE9? For RS-232 2=RX and 3=TX, so should be 2 and 3. The GPS19 manual I downloaded has conflicting information, in one place it says gray is Tx in another it says Rx. So, if connected to pins 2/3 of the DE9 is doesn't work then swap the two wires.

[Edit] and you have RxB connected to ground? I'd disconnect from ground, leave free/NC[/edit]Never mind, saw the note you are following in the manual.
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Old 16-12-2019, 15:35   #5
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Re: Trouble with antenna

Quote:
Originally Posted by mkomm2021 View Post
Hello all,

I'm using a Garmin GPS 19xHVS antenna, and I'm trying to use Putty to test a communication system. So far all I've been able to get is garbage output through putty no matter which baud rate I choose. I've attached screenshots and images of how everything is connected. Could someone on here recommend to me a possible solution? Thanks in advance.

The wires are setup in the following configuration:

Red - power, connected to a +12.1V power supply
Black/Orange/OrangeWhite - ground, accessory on, RxB, connected to ground
Purple - PPS, NC to anything beyond the terminal block (intentional)
WhiteRed- TxB, NC to anything beyond the terminal block (intentional).
Grey- TxA, connected to a DB9 converter
White- RxA, connected to a DB9 converter

The DB9 converter is then run to a USB serial adapter, which is plugged into the PC. Hopefully this is enough information. I've also attached a link to the manual for the 19XHVS.
UPDATE EDIT:
Okay, so I figured it out. I took another look at my wiring, and found that I improperly wired my Tx/Rx to the DB9 converter, and was missing the ground wire to the converter (even though the GND wire was already connected to a GND, just not there). Been talking clean ever since.
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Old 16-12-2019, 15:43   #6
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Re: Trouble with antenna

Quote:
Originally Posted by mkomm2021 View Post
UPDATE EDIT:
Okay, so I figured it out. I took another look at my wiring, and found that I improperly wired my Tx/Rx to the DB9 converter, and was missing the ground wire to the converter (even though the GND wire was already connected to a GND, just not there). Been talking clean ever since.
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Old 18-12-2019, 00:27   #7
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Re: Trouble with antenna

there is no need for the 19x RX wire. you are not going to be talking to it.

you should have pin 2 and pin 5 on the serial plug connected. (if it's standard 232) 2 to grey, and 5 to white / red. you might be able to leave pin 5 floating. or you may even need to. if you do, do not connect white / red to the ground.

this gets into rs232 vrs 485 issues.

+12v to red, and ground to black and orange.

I have had issues with usb to serial converters not working. I still have an old win xp laptop with serial port I use for all nmea debugging.

the 19x will run at 38,400 baud by default. and 4800 if you use the resistor as per manual.
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