- Original Message -
From: Jason Rabel [EMAIL PROTECTED]
To: 'Discussion of precise time and frequency measurement'
time-nuts@febo.com
Sent: Monday, January 22, 2007 6:14 PM
Subject: [time-nuts] Serial Port Logging Script?
I did some Googling but kept hitting dead ends, so I figured I
Use Kermit. It's free, it runs on any computer, and will log to a disk.
-Chuck Harris
Jason Rabel wrote:
I did some Googling but kept hitting dead ends, so I figured I would hit you
guys up for some help.
I finally got my Shera board working (Thanks to James Miller for helping me
finally
Virtually all the unixen have a program dos2unix that will turn CRLF into LF.
If they don't, there is always sed.
-Chuck Harris
Jason Rabel wrote:
Yeah I think I kind of jumped the gun after doing a little more
investigation... The board is outputting a CR and LF so technically the
logserial
Jason, I have a couple of Perl programs that do that. You pretty much
need to use a serial port module to provide the communications.
I'm not in a position right now to bundle them up for you, but I can do
that tonight.
John
Jason Rabel wrote:
I did some Googling but kept hitting dead
O... conserver looks pretty cool, I can't believe I didn't know about
that before!
Thanks PHK! :)
Jason
-Original Message-
In message [EMAIL PROTECTED], Jason Rabel writes:
I did some Googling but kept hitting dead ends, so I figured I would hit
you
guys up for some help.
I
I just opened up mine and snapped a couple pics, mine doesn't look that
bad...
http://www.rabel.org/archives/Images/LNFA1X4-N/
I *think* tvb (if not him someone else) opened up one of the symmetricom's
and put some pictures online. There should be links *somewhere* in the
archive here.
I'm
I also bought a few of these recently from the dealer in Florida. I
currently have one in use, with all four ports utilized, and it works like a
charm. One of the ports does go to a Z3801A. I am very pleased with it.
Regards - Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell, NJ, 07731
Okay, I *just* swapped out the splitters and have the LNFA1X4-N running...
I just have 3 devices hooked up at the moment, but all 3 locked back on
quickly and the signal strength is the same as before with the Symmetricom.
Sure the paint job is a little cheap (peels off easy), but for the price
Daun,
Thanks for the info. Just for grins I tried to hook the GND on pin 2 to the
GND on pin 4/5. Still nothing.
I'm going to let it cool down then open it back up and start following the
troubleshooting in the manual, hopefully it will be a simple fix like yours
turned out to be. :)
Jason
So I'm looking for some mini switches and can't find them in my usual parts
drawers. I spot a box of random parts that I bought off eBay a lng time
ago and I start digging through the box. It's like I hit gold! I'm finding
all sorts of parts (some that I have recently ordered because I didn't
If all you want to do is copy whatever comes in the serial port to a
file, cat would probably do what you need. Use awk (gawk) if you
want to prepend the current date/time.
Gary
Jason Rabel wrote:
I did some Googling but kept hitting dead ends, so I figured I would hit you
guys up for
Okay, so I've partially disassembled my 10811, I have checked most of the
points in the manual and everything appears okay.
A couple questions though. There are a pair of black wires running from the
top PCB down under the board below it (I haven't removed that board yet to
see what is
It's probably the thermistor. What model are you playing with?
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Jason Rabel
Sent: Monday, January 22, 2007 5:16 PM
To: 'Discussion of precise time and frequency measurement'
Subject: [time-nuts] 10811 Repair
Jason,
Do me (and others) a favor and take some good pictures. Especially if
you can get one with it all unfolded (like page 63) I'll fix/sitch it up in
photoshop.
Jack
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Jason Rabel
Sent: Monday,
What do you mean it's probably the thermistor? You mean the black wires
are for the thermistor, or the problem is probably the thermistor?
It's a 10811-60155 (I think the manual stays it is an untested model).
And to answer your other email, sure I'll take some high-res pictures of it
all if I
Yes, the black wires are the thermistor.
The crystal has three wires. Two are actually connected
to the crystal electrodes. The third is the case. The
case is fastened to the casting with a screw. The only
way the casting gets an electrical ground is by way of the
crystal ground screw and
What voltage goes to the crystal? I may have had my scope scale too high and
just didn't notice, but at first glance I don't think it was getting power.
Jason
-Original Message-
Yes, the black wires are the thermistor.
The crystal has three wires. Two are actually connected
to the
Here is a shell script that sets a serial port, reads data from the
serial port and pipes it to another program (rpm)
#!/bin/sh
# open ttyS1, set to 19200 and raw mode (so as not to choke on checksum)
stty 19200 raw /dev/ttyS1
# Print what comes from ttyS1, filter through rpm
cat /dev/ttyS1
Here's some graphs from last night's data while running mode 3, the time
scale is just 30 second intervals it's not the actual time.
http://www.rabel.org/archives/Images/Misc/Phase_Graph.gif
http://www.rabel.org/archives/Images/Misc/DAC_Graph.gif
How do they look for the first day, Good / Bad?
Jason Rabel wrote:
Here's some graphs from last night's data while running mode 3, the time
scale is just 30 second intervals it's not the actual time.
http://www.rabel.org/archives/Images/Misc/Phase_Graph.gif
http://www.rabel.org/archives/Images/Misc/DAC_Graph.gif
How do they look for the
I have posted the source for the rpm program below (rpm.c). You might
want to use it as a basis to do the formatting and time stamping of the
data received by the serial port. That's what this program was written
for, even though it was intended for data in a specific format for an
application
X units are time in hours minutes. I gave each data entry a 30 second time
offset.
Y units are the converted numbers from the gpslog3 program (phase diff in ns
/ dac has been converted and multiplied by 0.0207)
Jason
How about indicating the X and y axis units.
Bruce
Dr Bruce Griffiths wrote:
Jason Rabel wrote:
What voltage goes to the crystal? I may have had my scope scale too high and
just didn't notice, but at first glance I don't think it was getting power.
Jason
-Original Message-
Yes, the black wires are the thermistor.
The
Dr Bruce Griffiths wrote:
Dr Bruce Griffiths wrote:
Jason Rabel wrote:
What voltage goes to the crystal? I may have had my scope scale too high and
just didn't notice, but at first glance I don't think it was getting power.
Jason
-Original Message-
Yes, the black
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