Hi Didier,
When the 50 ohms termination is switch on the oscilloscope there is
a tiny positive dot deflecting every second, it appears to have a
very low output.
Best regards,
Sal C. Cornacchia
Electronic RF Microwave Engineer (Ret.)
________________________________
From: Didier Juges<did...@cox.net>
To: Time-Nuts<time-nuts@febo.com>
Sent: Sun, February 7, 2010 11:51:15 AM
Subject: Re: [time-nuts] No 1 PPS output on a Tbolt
The pulse is narrow, but it should be a full 5V amplitude. The driver
is pretty beefy, the amplitude does dot drop appreciably when loaded
with 50 ohms on mine.
Didier KO4BB
------------------------ Sent from my BlackBerry Wireless thingy
while I do other things...
-----Original Message-----
From: SAL CORNACCHIA<salc...@rogers.com>
Date: Sun, 7 Feb 2010 08:42:49
To: Discussion of precise time and frequency
measurement<time-nuts@febo.com>
Subject: Re: [time-nuts] No 1 PPS output on a Tbolt
Hi Bob,
The pulse is barely visible on the Tektronix 485 it appears to be a
very low output.
Best regards,
Sal C. Cornacchia
Electronic RF Microwave Engineer (Ret.)
________________________________
From: Bob Camp<li...@cq.nu>
To: Discussion of precise time and frequency
measurement<time-n...@febo..com>
Sent: Sun, February 7, 2010 11:26:16 AM
Subject: Re: [time-nuts] No 1 PPS output on a Tbolt
Hi
The 5345 should see it if it's set to 50 ohm termination and DC
coupling.. A
sweep of the trigger from about 1.5 to 3.5 volts should show it there
over
most of the sweep.
Bob
--------------------------------------------------
From: "SAL CORNACCHIA"<salc...@rogers.com>
Sent: Sunday, February 07, 2010 11:06 AM
To: "Discussion of precise time and frequency measurement"
<time-n...@febo..com>
Subject: Re: [time-nuts] No 1 PPS output on a Tbolt
Oscilloscope and 5345A Counter, the Tbolt software shows all green.
Best regards,
Sal C. Cornacchia
Electronic RF Microwave Engineer (Ret.)
________________________________
From: "Stan, W1LE"<stanw...@verizon.net>
To: Discussion of precise time and frequency measurement
<time-nuts@febo.com>
Sent: Sun, February 7, 2010 10:47:42 AM
Subject: Re: [time-nuts] No 1 PPS output on a Tbolt
Hello Sal,
What are you monitoring the PPS output with ??
It is a short duration pulse.
What does the TboltMON software (available at the trimble website)
show ?
What does Lady Heather indicate ?
(She is just waiting to massage your numbers.)
Stan, W1LE
