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Multiple PPC/cradles sync'ing to one desktop LVDave 11-26-2007
Posted by LVDave on November 26, 2007, 5:42 pm
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I've got a conceptual question for the group. We have four Trimble GeoXT
GPS/PocketPC units (WM2005). I've been requested by our GIS manager to set up
a pc with the four cradles connected to the pc for all four GPS/PPC units.
The idea is to allow the device user to place his unit into the cradle for
that unit, then login to the host pc, and copy his sync'ed GPS tracking data
to/from the desktop "MyDocs" shortcut for that GPS/PDA. The only sync'ed
items selected on these units are "files". Since each cradle will be in its
own lockable cabinet, once the user has docked the PDA, copied his data off
the unit, and locked the cabinet for that unit, it can sit and securely
charge until the next user signs it out. Is this doable with ActiveSync?

LVDave


Posted by Sven on November 28, 2007, 1:20 am
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Use ta could. Was a time when you could dock four devices. The first would
sync the others would just charge. When you turned the first off, it would
stay off. Then you could turn another on (or off ,then on, in the cradle)
and it would connect. You could turn it off, leave it off, and repeat with
others. Now, for whatever devious reason, the device thinks it needs to
power up and connect every five minutes. This is WM5/6, AS 4+/WMDC. It still
would work, sort of, if you had access to all four devices. You would have
to turn all four off, and then turn one on. It should connect, but within 5
minutes the others would turn themselves on. They wouldn't connect, but you
would need to turn all four off to sync another one. Since you say they are
in locked cabinets, that presents a problem.

Even in the earlier situation, if one guy doesn't remember to turn his off
after copying files, or an alarm starts the device, you'd have an issue. You
could help this by setting an automatic shutdown time, when on external
power, but you still could have an issue depending on what you set that
timeout too, how long it takes to sync, and how staggered the syncs are.

--
Sven
MS MVP Mobile Devices
> I've got a conceptual question for the group. We have four Trimble GeoXT
> GPS/PocketPC units (WM2005). I've been requested by our GIS manager to set
> up
> a pc with the four cradles connected to the pc for all four GPS/PPC units.
> The idea is to allow the device user to place his unit into the cradle for
> that unit, then login to the host pc, and copy his sync'ed GPS tracking
> data
> to/from the desktop "MyDocs" shortcut for that GPS/PDA. The only sync'ed
> items selected on these units are "files". Since each cradle will be in
> its
> own lockable cabinet, once the user has docked the PDA, copied his data
> off
> the unit, and locked the cabinet for that unit, it can sit and securely
> charge until the next user signs it out. Is this doable with ActiveSync?
>
> LVDave
>


Posted by LVDave on November 28, 2007, 12:16 pm
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"Sven" wrote:

> Use ta could. Was a time when you could dock four devices. The first would
> sync the others would just charge. When you turned the first off, it would
> stay off. Then you could turn another on (or off ,then on, in the cradle)
> and it would connect. You could turn it off, leave it off, and repeat with
> others. Now, for whatever devious reason, the device thinks it needs to
> power up and connect every five minutes. This is WM5/6, AS 4+/WMDC. It still
> would work, sort of, if you had access to all four devices. You would have
> to turn all four off, and then turn one on. It should connect, but within 5
> minutes the others would turn themselves on. They wouldn't connect, but you
> would need to turn all four off to sync another one. Since you say they are
> in locked cabinets, that presents a problem.
>
> Even in the earlier situation, if one guy doesn't remember to turn his off
> after copying files, or an alarm starts the device, you'd have an issue. You
> could help this by setting an automatic shutdown time, when on external
> power, but you still could have an issue depending on what you set that
> timeout too, how long it takes to sync, and how staggered the syncs are.
>
> --
> Sven
> MS MVP Mobile Devices
> > I've got a conceptual question for the group. We have four Trimble GeoXT
> > GPS/PocketPC units (WM2005). I've been requested by our GIS manager to set
> > up
> > a pc with the four cradles connected to the pc for all four GPS/PPC units.
> > The idea is to allow the device user to place his unit into the cradle for
> > that unit, then login to the host pc, and copy his sync'ed GPS tracking
> > data
> > to/from the desktop "MyDocs" shortcut for that GPS/PDA. The only sync'ed
> > items selected on these units are "files". Since each cradle will be in
> > its
> > own lockable cabinet, once the user has docked the PDA, copied his data
> > off
> > the unit, and locked the cabinet for that unit, it can sit and securely
> > charge until the next user signs it out. Is this doable with ActiveSync?
> >
> > LVDave
> >
>
oy vey.. I was kind of afraid of that.. The people using these GPS/PDA units
are
extremely non-techy people, and the idea was to combine security for the $4K
units and make a central sync'ing point for the units. I'm not very
PPC-knowledgable, and especially not familiar with WM2005 which these units
have. If the units feel the need to power up every 5 min, I can see how that
might screw up the works if all four cradles/units are connected to the pc.
To keep it simple for my manager, would I be correct in saying "It can't be
done.." regarding doing all four units on one system??

Posted by Sven on November 28, 2007, 11:08 pm
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That would probably be accurate given normal stuff. I could envision someone
building a dock that has a switch that controls the center two pins of a USB
cable. The two outside are power, the two inside are data. You could label
the switch sync and charge, where charge disconnects the center tabs and
sync connects them. Outside power tabs always connected.

At that point you could teach folks to dock in charge position, switch to
sync, let the system connect, do the transfers, then switch back to charge,
disconnecting the data pins.

If you had some handy hardware guy, this shouldn't be real hard, and you
could even get him to set it up so the sync position flashes a red light,
reminding the users what position they are in. This ought to work. As far as
I know, nothing like this exists commercially, though

--
Sven
MS MVP Mobile Devices
>
>
> "Sven" wrote:
>
> To keep it simple for my manager, would I be correct in saying "It can't
> be
> done.." regarding doing all four units on one system??


Posted by LVDave on November 29, 2007, 4:07 pm
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I'm the only "handy hardware guy" in the company, and what with all the other
hats I wear, I'd have no time to do anything like this.. What I think we're
gonna wind up doing is having the GIS dept order another
cradle/powerpack/cable for the units, and use it outside the locked cabinet,
for actual sync'ing, and save the 4 original cradles in the locked cubbyholes
for PDA storage/charging. I *know* I can
sync all four units individually in a single cradle, as I created a
files-only sync relationship with all four when I was setting them up, got
four diff "mydocs" shortcuts on my test machines desktop.... Thanks for
help...

LVDave

"Sven" wrote:

> That would probably be accurate given normal stuff. I could envision someone
> building a dock that has a switch that controls the center two pins of a USB
> cable. The two outside are power, the two inside are data. You could label
> the switch sync and charge, where charge disconnects the center tabs and
> sync connects them. Outside power tabs always connected.
>
> At that point you could teach folks to dock in charge position, switch to
> sync, let the system connect, do the transfers, then switch back to charge,
> disconnecting the data pins.
>
> If you had some handy hardware guy, this shouldn't be real hard, and you
> could even get him to set it up so the sync position flashes a red light,
> reminding the users what position they are in. This ought to work. As far as
> I know, nothing like this exists commercially, though
>
> --
> Sven
> MS MVP Mobile Devices
> >
> >
> > "Sven" wrote:
> >
> > To keep it simple for my manager, would I be correct in saying "It can't
> > be
> > done.." regarding doing all four units on one system??
>

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