[time-nuts] TBOLT communication
namichie at gmail.com
Wed Sep 24 04:58:24 EDT 2008
I have just spent a week or two trying to talk to a Trimble Thunderbolt.
I have a laptop running VISTA, about which there is little to say.
The laptop has no serial ports, but I have some USB/Serial converters
that successfully run
my HP 3815A and a Samsung GCRU/D, and also communicate with my HOBO
The USB/Serial converters are a little difficult to use, sometimes
unplugging and plugging back in. They get assigned to various Port
numbers but tend to keep
the same number from day to day. The ports can be configured in the
However the TBOLT refuses to talk to the converter, to the extent
that I thought that I must have
damaged the TBOLT.
Today, as a last resort, I remembered an old PC, dragged it out and
stoked it up, and to my delight
the TBOLT monitoring program ran without difficulty under Windows
2000 with a conventional serial port.
Now I vaguely remember talk about RS232 communications and the need
for pull up or down
resistors and supplies, but searching the archives I could find
Can anyone tell me how I could run the TBOLT off a USB/Serial converter?
cheers, Neville Michie
More information about the time-nuts