Hi
Since you asked, pinouts:
Standard numbering on all connectors. The P connector is numbered “backwards”
from the J connectors as viewed from the front of the unit. If that does not
make sense, check a DB-9-M and DB-9-F diagram. The numbers are on the parts in
*really* small print if you really want to go crazy.
P1, Power
pin 1 + supply into the unit
pin 2 supply return out of the unit
all other pins - no connect
Supply is 18 to 36V. After warmup the pair of units pull about 1A at 28V. At
turn on they pull more than 2A. The supply inputs are fully floating at DC
relative to the chassis.
J8 - Diagnostics
Pins 3 and 7 ground
Pin 4 RX+
Pin 8 RX-
Pin 5 TX+
Pin 9 TX-
all others no connect
J6 PPS
Pins 3 and 7 ground
Pin 4 RX+
Pin 8 RX-
Pin 5 TX+
Pin 9 TX-
Pin 1 PPS+
Pin 6 PPS -
all others no connect
J3 Alarm
all pins no connect
All signals for RX and TX are RS-422. Data on J8 is at 9600 baud 8N1. RX is
into the box, TX is out of the box.
Data format on the Diag connector looks like the older RFTG’s:
byteuse values
1 talker 0 = ref 0, 1 = ref 1
2 status 0 = active, 1 = inactive
4 mode0 = warmup, 1 = gps, 2 = holdover, 3 =
fault
9,10timehours in this mode
11 to 18GPS timeseconds since GPS start in 1980
19 to 22FirmwareRom version
23,23 checksum
The string starts with a :
All the bytes not listed above read as zero
No idea about the diag port. I haven’t gotten that far.
One hint:
If you have “GPS” trouble on the slave unit, wiggle the interface cable.
Apparently the 15 year old cable contacts aren’t quite as shiny as they should
be.
Bob
On Oct 31, 2014, at 2:09 PM, n2lym n2...@optonline.net wrote:
I have modified Ulrich's executable for the Z3811 and it works fine. Email me
if you want a copy. Does anyone have pinout information for these?
Mike
73 DE N2LYM
Message: 1
Date: Thu, 30 Oct 2014 21:49:06 -0400
From: Bob Camp To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A,
Z3810A, Z3811A, Z3812A GPSDO system
Message-ID: 7c7537c3-d3cb-490f-99f3-d54af04e9...@n1k.org
Content-Type: text/plain; charset=utf-8
Hi
I wonder if anybody has a copy of Ulrich’s source code? If so, there might
be somebody on the list willing to rework it for the 3810 series and the
more modern operating systems.
Bob
On Oct 30, 2014, at 1:25 PM, Götz Romahn wrote:
and here comes another trick:
Ulrich's Z38XX can be persuaded to accept the Z3811 instead of an Z3805.
For this to happen search with an Hex-editor in Z38XX twice for the string
z3805 and replace this z3805 with z3811, save the changes and enjoy the
various Views Ulrich provided.
Götz
Am 30.10.2014 18:13, :
Just a hint: I tried successfully Ulrichs Z38XX software
(http://www.ulrich-bangert.de/html/downloads.html)
in Windows7-32. At least the Manual Command Entry and the Debug
Window should work.
regards Götz
Am 29.10.2014 23:55, :
Hi
One thing that might help others who are having issues with these units:
Which pins did power go to?
Which pins do you see RX (and maybe TX) data on?
Which cables went where (and their pinout) to interconnect this or that?
What software are you using?
Yes, One could make some pretty quick guesses at most of this. It’s
often a quick guess gone wrong that messes people up …
Bob
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