Hello Arnold,
the current drawn by the Motorola GPS from the backup bat is not linear
versus voltage.
On an M12+, the real time clock takes most of the current, and will stop
operating after about a day or less on a Supercap. The SRAM memory keeps
maintaining it's contents for much longer
Hello Morris,
I am not aware what is the voltage range for the backup battery in the GPS-RX,
but using a super cap or gold cap instead of a (rechargeable) battery
should be ok for short backup times, Synergy does even propose the use
of a SuperCap or UltraCapacitor as a backup power source for c
Tom Van Baak skrev:
>> Hi all,
>>
>> I'm planning to use a HP 53131A for phase measurements.
>> In a limit case, just to understand, suppose that I'm
>> reading, say, 100 degrees, and the next reading gives again
>> 100 degrees, but meanwhile the signal under test jumped 360
>> degrees. Is ther
> Hi all,
>
> I'm planning to use a HP 53131A for phase measurements.
> In a limit case, just to understand, suppose that I'm
> reading, say, 100 degrees, and the next reading gives again
> 100 degrees, but meanwhile the signal under test jumped 360
> degrees. Is there any way to detect such a
[EMAIL PROTECTED] skrev:
> Hi all,
>
> I'm planning to use a HP 53131A for phase measurements.
> In a limit case, just to understand, suppose that I'm
> reading, say, 100 degrees, and the next reading gives again
> 100 degrees, but meanwhile the signal under test jumped 360
> degrees. Is there
Hi Roy,
On Sat, 2008-11-22 at 11:29 +, Roy Phillips wrote:
> at the front of the unit via a connector, and there is a location on this
> PCB for a for a 9-pin D connector!. If this had been used it would have
> made a serial port available at the front panel. More interesting is that
> th
> In the interests of costs, it would seem that there is no RS-232
> facility. There is a sub PCB that carries the LED's at the front of
> the unit via a connector, and there is a location on this PCB for a
> for a 9-pin D connector!. If this had been used it would have made a
> serial port a
Hal
Thanks for your kind help. You are certainly right about the PECL level
signals from the I/O connector, but this is where the similarity stops, as
the Trimble unit is to all intents a substitute for the Z3801A, but
internally its quite different. In the interests of costs, it would seem
tha
check http://www.synergy-gps.com/content/view/42/89/ the article on
battery backup has some info on this
Brian KD4FM
Morris Odell wrote:
> Hi Fellow Nuts,
>
> I've been following the thread on parsing the Motorola receiver code with
> great interest. I have written AVR code to do this b
Hi all,
I'm planning to use a HP 53131A for phase measurements.
In a limit case, just to understand, suppose that I'm
reading, say, 100 degrees, and the next reading gives again
100 degrees, but meanwhile the signal under test jumped 360
degrees. Is there any way to detect such a case?
Thank
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