[time-nuts] Need some help with Motorola Oncore VP BackinBinarymode

[Brian Kirby]

This is a receive only interface, (Bill K8CU web pages) to monitor the 
Oncore receiver (something I designed a while back to play around with).

The program that Randy informed you of, TAC32, will communicate with the 
receiver and you will be able to change the unit to a 6 channel 
operation, which is what the Z3801A expects.

Motorola had several versions of Oncores, and the one used in the Z3801A 
was a 6 channel unit.  The 8 channel unit will work fine in the Z3801A, 
but you have to tell it to be a 6 channel unit.

You do need an interface that will fully communicate with the receiver. 
  Its attached.

Brian N4FMN


Bill Jones, K8CU wrote:
> Don,
> 
> Visit this web page for a description of adding a TAC-32 interface to the
> Z3801A:
> 
> http://www.realhamradio.com/tac32-interface.htm
> 
> Bill, K8CU
> 
> ----- Original Message ----- 
> From: "Don Garlick" <DGarlick at garlickfamily.org>
> To: <randy at geodetics.com>; "Discussion of precise time and frequency
> measurement" <time-nuts at febo.com>
> Sent: Saturday, March 10, 2007 12:07 AM
> Subject: Re: [time-nuts] Need some help with Motorola Oncore VP
> BackinBinarymode
> 
> 
>> I am not sure we are on the same page
>> I cannot get this to work
>>
>> The gps board is inside the Z3801A and my computer serial port
>> is connected to the Z3801A
>>
>> Will this work communicating through the Z3801A ?
>>
>> Don
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Randy Warner
>> Sent: Friday, March 09, 2007 3:33 PM
>> To: 'Discussion of precise time and frequency measurement'
>> Subject: Re: [time-nuts] Need some help with Motorola Oncore VP Back
>> inBinarymode
>>
>> Don,
>>
>> Not a problem.
>>
>> 8 channel VP's are capable of sending out 6 channel messages just fine.
>>
>> Go to Rick Hambly's site:  http://www.cnssys.com/Tac32/ and download the
>> eval copy of SynTaC. Actually, lots of the guys on this group probably
>> have
>> a copy already. Hook up your receiver and start TaC32. If the serial
>> port is
>> Com 1 the TaC32 program should start displaying data as soon as the eval
>> splash screen is gone. If not, go into the <Edit> menu and set up the
>> GPS
>> interface for the right Com Port request the "Mot Bin" protocol, and
>> then
>> press <OK>. Tac32 should automatically poll the VP until it figures out
>> what
>> mode it is in (in your case NMEA) and then flip it to binary. If you
>> have an
>> antenna plugged in you should see satellite tracking, GPS fixes, etc. If
>> you
>> look in the lower right hand corner of the main window you should see
>> something like: Motorola VP, 8 Ch, has DGPS..... I can't remember the
>> actual
>> wording. By default TaC32 enables the 8 channel @@Ea and @@En messages
>> along
>> with the @@Bb messages. To switch to 6 channel mode, click on <Data>,
>> <Set
>> Receiver Parameters>, and under "Special Purpose Modes" select
>> "6-Channel
>> Mode". When you click on <OK> Tac32 will turn off @@Ea and @@En and turn
>> on
>> @@Ba and @@Bn. @@Bb will stay the way it is. The lower right hand corner
>> of
>> the main window should now indicate that you are in 6 channel mode. The
>> Z3801 should now work fine.
>>
>> About the battery: Just dragging down the battery will not clear the
>> message
>> formats on a VP. On the VP's all of the set-up info was stored in
>> EEPROM.
>> The only way to change things was to overwrite (as we just did here) or
>> default the receiver with the @@Cf message.
>>
>> Let me know if you have any problems.
>>
>> Randy
>>
>>
>> -----Original Message-----
>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>> Behalf Of Don Garlick
>> Sent: Friday, March 09, 2007 2:37 PM
>> To: time-nuts at febo.com
>> Subject: [time-nuts] Need some help with Motorola Oncore VP Back in
>> Binarymode
>>
>> Hello I need a little help
>>
>>
>>
>> I bought a Oncore VP board with 8 channels for my Z3801
>>
>>
>>
>> http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250082966589&sspagena
>> me=ADME:L:RTQ:US:1
>>
>>
>>
>> Motorola P/N: B8221Z1116
>>
>>
>>
>> This has a battery in it.
>>
>>
>>
>> It was tested by the seller by placing in the NMEA mode and left it in
>> NMEA mode.
>>
>> Now the board he used to talk to it has failed so he cannot change it
>> back.
>>
>>
>>
>> After I could not get it to work I tried draining the battery down to
>> .07 volts.
>>
>>
>>
>> I still could not get it to work in the Z3801
>>
>>
>>
>> Put the old 6 channel back in and it works again
>>
>>
>>
>> http://gps.garlickfamily.org
>>
>>
>>
>> Can anyone tell me how to get it out of NMEA and back to binary?
>>
>>
>>
>> Thank You
>>
>> Don
>>
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>>
>>
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