[time-nuts] Z38XX -- Z3816A

Rex rexa at sonic.net
Thu Jul 16 00:27:19 UTC 2009


Ulrich,

First, many thanks for all the delevopment you have done and share 
freely. You and John Miles are both to be commended for so much of this 
kind of  work.

I have a Z3816A and tried your program. Seems it would need to be 
updated to support this GPS receiver.  I think it is pretty similar, in 
commands, to the other Z38xx boxes. I wonder if you would be willing to 
try adding support?

If you are willing to look at it, I have put some details in this 
message. Feel free to contact me -- rexa at xertech.net -- if you need 
more specifics or testing from my Z3816A.

-Rex, KK6MK

There are some possible serial initialization issues. The help section 
from GPSCon, describing this, can be found in the middle of this page:
http://www.realhamradio.com/GPS_Z3816A_Receiver.htm
(something odd happened with one of the pictures on that page.)

The command structure is very close to chapters 4 and 5 in this document:
http://www.leapsecond.com/museum/hp58540a/097-58540-01-iss-1.pdf

with a similar description of the :SYST:COMM commands in this one:
http://www.leapsecond.com/museum/hp58540a/097-58540-01-iss-1.pdf

I used a serial terminal at 9600 baud to talk to my receiver and capture 
the sequence below. I started with the 3816 serial interface in FDUP 
(full duplex) mode so that the commands I sent show in the capture. For 
normal communication it should be turned off, as I did near the end.

--- begin capture --- (viewed best with fixed width font)
:SYST:COMM:SER1:FDUP?
1

scpi > :PTIM:TCOD:CONT?
0

scpi > *IDN?
HEWLETT-PACKARD,Z3816A,3703A00148,4001-A

scpi > :SYST:STAT?
------------------------------- Receiver Status 
-------------------------------
SYNCHRONIZATION ............................................. [ Outputs 
Valid ]
SmartClock Mode ___________________________   Reference Outputs 
_______________
 >> Locked to GPS                              TFOM     3             
FFOM     0
   Recovery                                   1PPS TI +2.8 ns relative 
to GPS
   Holdover                                   HOLD THR 1.000 us
   Power-up                                   Holdover Uncertainty 
____________
                                              Predict  5.4 us/initial 24 hrs
                                               
ACQUISITION ................................................ [ GPS 1PPS 
Valid ]
Tracking: 6 ____   Not Tracking: 0 ________   Time 
____________________________
PRN  El  Az  C/N                              UTC      23:33:11     15 
Jul 2009
  7  27 112   48                              GPS 1PPS Synchronized to UTC
  8  62  83   52                              ANT DLY  60 ns
 11  23  82   49                              Position 
________________________
 15  32 305   51                              MODE     Hold
 17  52 183   51                             
 28  69 356   50                              LAT      N  37:17:43.811
                                              LON      W 121:56:09.784
                                              HGT               +28.99 
m  (GPS)
ELEV MASK 16 deg                             
HEALTH MONITOR ......................................................... 
[ OK ]
Self Test: OK    Int Pwr: OK   Oven Pwr: OK   OCXO: OK   EFC: OK   GPS 
Rcv: OK

scpi > :SYST:COMM:SER1:FDUP 0

( entered :PTIM:TCOD:CONT? )
scpi > 0

( entered *IDN? )
scpi > HEWLETT-PACKARD,Z3816A,3703A00148,4001-A
scpi >
--- end of capture ---


Ulrich Bangert wrote:

>Guys,
>
>I have just uploaded a new version of Z38XX with the following improvements:
>
>1) Displays time AND date in the Nixie clock window
>
>2) Knows how to read date & time from Jackson Labs receivers, so the the
>clock window will function with them too.
>
>3) Has a new "Manual Command Entry" which, well...., allows manual command
>entry. The combobox still needs to be filled with more presets but you can
>actually type in whatever you want. Note that the normal communication
>thread is paused while this window is open. So close it whenever it is not
>used.
>
>Enjoy
>Ulrich Bangert
>
>Ulrich Bangert
>www.ulrich-bangert.de
>Ortholzer Weg 1
>27243 Gross Ippener 
>
>
>
>  
>





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