Hi...
Personally, i take great care about the 1PPS timemark
output from my GPS receivers. First thing of all: My
timemark line drives a single 74ACT04 or 40H69
inverter with short leads to get sure the line is as
little loaded as possible without ringing. What
happens after is far less stressing:
measurement
Subject: Re: [time-nuts] Oncore 1pps driver & LED
> I'd like to put an LED near the Oncore module that blinks on the 1pps.
> What's the best way to wire this up?
Some GPS boxes turn off the PPS signal when they don't have enough good
satellites.
For those,
> I'd like to put an LED near the Oncore module that blinks on the 1pps.
> What's the best way to wire this up?
Some GPS boxes turn off the PPS signal when they don't have enough good
satellites.
For those, a PIC works well as a LED driver: on solid when PPS is flapping,
blinking when PPS i
EMAIL PROTECTED] On
Behalf Of Glenn
Sent: Thursday, May 04, 2006 12:35 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Oncore 1pps driver & LED
Could I just drive the LED off the DCD line?
thanks,
glenn
Randy Warner wrote:
>Glenn,
>
>You "sho
Could I just drive the LED off the DCD line?
thanks,
glenn
Randy Warner wrote:
>Glenn,
>
>You "should" be alright. You're driving a lot of CAT5, but since the
>data is only at 9600 baud you should be OK. The 1PPS on the DCD line
>will be fine too. To blink an LED you just need to buffer the 1P
In message <[EMAIL PROTECTED]>, Glenn writes:
>
> I am hoping someone can help me with some basic electronic questions
>about hooking up the Oncore UT+.
>
>I have a MAX233CPP two channel rs232 driver. I presume I can use the
>second channel to drive the 1pps on DCD line.
Be aware that such drive
AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Oncore 1pps driver & LED
I am hoping someone can help me with some basic electronic questions
about hooking up the Oncore UT+.
I have a MAX233CPP two channel rs232 driver. I presume I can use the
second channel to dr
I am hoping someone can help me with some basic electronic questions
about hooking up the Oncore UT+.
I have a MAX233CPP two channel rs232 driver. I presume I can use the
second channel to drive the 1pps on DCD line. Yes? I'll have a run of
about 30-50' of CAT5, which *should* work. I should
