It is a Nortel, but no cables inside -- everything is on 1 board.
On 7/6/2013 1:36 PM, EB4APL wrote:
Is this "Trimble Thunderbolt" the Nortel-Trimble NTGS50AA board? I
had a problem with the com port of my unit upon removing it from the
cabinet for some improvements. After driving me nuts the problem was
caused by the internal com cable which had a factory reversed
connector that was unnoticed before. I had put the full story
recently on this list.
Regards,
Ignacio EB4APL
On 06/07/2013 18:56, Jim Sanford wrote:
All:
This is still not going well.
I have tried 3 different computers, 2 running Win7 and one running
XP. the XP machine successfully controls an Icom radio on the same
port, so I know the port is good. I have tried a new serial cable. I
have tried with and without a null modem.
No matter what I do, Lady Heather reports no serial communications on
comm/x.
/Thanks & 73,
Jim
[email protected]
/
/
On 7/6/2013 10:44 AM, Ed Palmer wrote:
Certainly if you need a full implementation with various control
leads you might have to dig out the breakout box and figure it out.
But the volts / no volts idea is still useful for connecting pairs
like RTS/CTS or DSR/DTR. But I'm surprised how many devices don't
use the control leads. Most of the devices I work with don't even
use software flow control.
Ed
On 7/5/2013 10:06 PM, Chris Albertson wrote:
On Fri, Jul 5, 2013 at 7:03 PM, Ed Palmer <[email protected]>
wrote:
I always cursed when I tried to figure out how to wire an RS232 cable
until I realized that transmit had a voltage on it while receive
was close
to zero volts. So now I just remember that volts on one end
connects to no
volts on the other end. Works every time and I don't have to
think about
straight or cross-over.
That only works if there are only three wiresand no handshaking.
What if
there is DTE/DCE and so on?
But I think in this case it is just a three wire connection but
still there
is room for errors like for example is one of them a TTL level and the
other RS-232. Some times you can mix the two, sometimes not.
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