[time-nuts] Z3805A Port 2.

Bob Camp lists at rtty.us
Thu Apr 4 16:15:54 UTC 2013


Hi

If it comes out every other second / 30 lines a minute, then indeed it's an
even second message. That would be useful for lining things up in a CDMA
base station. 

You might look and see if the 01 and 06 after the seconds correspond to
anything obvious. The 06 might be sats in view. The 01 might mean locked to
GPS.

Bob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Jim Lux
Sent: Thursday, April 04, 2013 11:29 AM
To: time-nuts at febo.com
Subject: Re: [time-nuts] Z3805A Port 2.

On 4/4/13 7:52 AM, Herbert Poetzl wrote:
> On Thu, Apr 04, 2013 at 02:32:09PM +0000, Mark C. Stephens wrote:
>> I wanted to have a look at what the Z3805A puts out on Port 2.
>
>> I can see the LEDS flickering on the BOB so its saying something.
>> I connected up a terminal program set to 96008N1 and it seems there is
nothing.
>> So I plugged the cable into port one to check the settings:
>> scpi > syst:comm:ser2:pace?
>> NONE
>> scpi > syst:comm:ser2:baud?
>> +9600
>> scpi > syst:comm:ser2:parity?
>> NONE
>> scpi > syst:comm:ser2:bits?
>> +8
>> scpi > syst:comm:ser2:sbits?
>> +1
>> So Serial 2 is definitely 96008N1.
>
>> Nothing displays on the terminal program so I used a serial
>> port monitor program and I see this recurring data:
>
>> 01 03 00 09 04 01 04 02 08 02 06 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 02 08 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 03 00 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 03 02 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 03 04 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 03 06 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 03 08 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 04 00 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 04 02 01 06 00 00 0D
>> 01 03 00 09 04 01 04 02 08 04 04 01 06 00 00 0D
>
>     1  3  0  9  4  1  4  2  8  4  4  = 1309412844
>
>> I can see its transmitting the even second time but what format
>> is this and how can I use it?
>
> $ date +"%s" # unix time (seconds since Jan, 1st, 1970)
> 1365086814
>
> so, my guess is, it is seconds since some point in
> time in decimal.
>

perhaps since week 0  (6 Jan 1980)


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