Today's Message Index:
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1. 05:46 AM - Re: AERA660 RS232 Output Test? (dj_theis)
2. 06:38 AM - Re: AERA660 RS232 Output Test? (dj_theis)
3. 11:30 AM - Re: AERA660 RS232 Output Test? (farmrjohn)
4. 12:09 PM - Re: AERA660 RS232 Output Test? (dj_theis)
5. 07:04 PM - Re: AERA660 RS232 Output Test? (farmrjohn)
Message 1
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Subject: | Re: AERA660 RS232 Output Test? |
John,
if you have a PC and a usb to serial adapter, along with a freeware utility like
Termite, you can monitor the serial port output. A low cost SERIAL TO USB adapter
can be purchased from numerous sources, including Amazon. Ive had good
luck with the StarTech products but I trust Adafruit to supply a good converter
at a reasonable price.
https://www.adafruit.com/product/18?srsltid=AfmBOoo_bZLXZv_gCpq8NnZGhvPIanZlLrROhgZU7QATwnqcJCStl4YE74c
The challenge is (sometimes) the serial cabling, as the rs232 standard has been
very casually followed for many years (wrt the pin conventions on the db9 connector).
https://termite.software.informer.com/3.4/
The terminal software (Termite) can display the data stream from the source aero660.
If you go this path I would first monitor a known working channel on the aero660
to insure wiring and rs232 settings are correct (baud rate, stop bits, etc.).
Dan T.
--------
Dan Theis
Scratch building Sonex #1362
Revmaster Alternator problem solved.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=515597#515597
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Subject: | Re: AERA660 RS232 Output Test? |
John,
After a quick check of the connections you have on the aero660 housing, I think
you might be better off with a serial to USB breakout connector.
https://www.adafruit.com/product/5995?srsltid=AfmBOop_JYaz2XhB0LqsZ5naUVbA8YjZaZFhtZdp9xzlpo6gJzH30jIge8s
Assuming you can get access to the tx and rx wires from the aero660, you can connect
them to the complimentary terminals on the breakout (e.g. tx to rx and rx
to tx).
Then USB to the PC and with Termite, you can monitor the data stream.
Dan T.
--------
Dan Theis
Scratch building Sonex #1362
Revmaster Alternator problem solved.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=515598#515598
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Subject: | Re: AERA660 RS232 Output Test? |
I'm not sure how those connectors would work. In my case the bare wire cable from
the Aera goes to a 9 pin d-sub, pinned as follows:
1-Black (gnd)
2-Red (power)
3-Green (audio common)
4-White (audio R)
5-Brown (Audio L)
6-Purple (232-2 rx)
7-Orange (232-2 tx)
8-Yellow (232-1 rx)
9-Blue (232-1 tx)
It is pin 7 (232-2 tx) that I'm interested in. It does not appear to be sending
to either the engine monitor or elt. Pins 8 and 9 are working correctly with
the GPS175. It would not be a problem to make a pigtail to connect to pin 7.
Pin 6 (232-2 rx) is not connected to anything beyond the d-sub.
If I connected the d-sub to one of those testers/connectors what impact would the
non 232 pins have? Is it possible to see if there is any output from pin 7
using a pigtail and multimeter?
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=515599#515599
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Subject: | Re: AERA660 RS232 Output Test? |
Hi John,
The breakout converter would be best used by segregating the pin of interest (pin
7) and excluding any of the other pins from being connected to the PC (via
the converter). You will also need to include a communication reference (the power/data
common pin) which is the black wire. Its not uncommon for a NEMA signal
to exclude the rx pin as they often do not require any command signal to
transmit GPS data but simply transfer data in the blind.
A multimeter might wiggle a bit but the signal oscillating speed is much to high
to be of much use. It might show some average voltage values, depending on
the character strings being sent.
An oscilloscope would be required to capture the voltage signal. the terminal
emulation software (termite) reads the oscillations and interperets the ASCII
to text so you can read it.
Dan T.
--------
Dan Theis
Scratch building Sonex #1362
Revmaster Alternator problem solved.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=515600#515600
Message 5
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Subject: | Re: AERA660 RS232 Output Test? |
Dan- A couple of questions on how to use the breakout converter. 1. Would I connect
pin 7 (RS232) to the RS232 TX terminal and pin 1 (gnd) to the RS232 GND
terminal? 2. Would a USB port on the panel work to power the converter vs. a
computer?
It might be simpler to switch pins 7-9 on the output side of the d-sub and re-set
the 232 settings appropriately for the Aera to check. Or, would a continuity
test for the output side from terminal 7 be appropriate?
John
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=515601#515601
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