[time-nuts] HP Z3801 Life time

[ernieperes at aol.com]

Hi,

many thanks to everybody who responded...... now everything is clear...... thanks a lot.

Best regards,
Ernie.







-----Original Message-----
From: Rex <rexa at sonic.net>
To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
Sent: Thu, Nov 4, 2010 2:54 am
Subject: Re: [time-nuts] HP Z3801 Life time


I never saw the original message because, apparently, it was off-topic posted in one of the noisy threads I was deleting. But anyway... 
 
>From the similar GPS 58503B manual: 
 
:DIAGnostic:LIFetime:COUNt? RESPONSE 
Returns the lifetime count, indicating the total powered-on time. 
Range of the integer is 0 to 4,294,967,296 with a resolution of 1. Each count 
represents three hours of operation. 
 
If I did the math right, that allows for about 490,000 years. Probably a bit more than necessary. 
 
The OP said, 
"started at life time 13917 and after 145Hrs it shows 13965" 
So that would be 13965 - 13917 = 48 x3 = 144 hrs 
 
13965 x 3 = 41860 or about 4 3/4 years of on time. 
 
 
On 11/3/2010 5:58 PM, Bob Camp wrote: 
> Hi 
> 
> It is in odd units. It's also sort of a meaningless number. There is no obvious wear out mechanism in a Z3801. If anything they should get better the longer they are on power. 
> 
> Bob 
> 
> 
> On Nov 3, 2010, at 8:22 PM, ernieperes at aol.com wrote: 
> 
>> Hi Time nuts, 
>> 
>> Just recently started my Z3801 in my new location and noticed the following discrepancy.... 
>> 
>> The unit is running more then 145 Hrs from the new start up.....and the "life time" display from the starting time just shows 48 " digit" more time......in other words: 
>> started at life time 13917 and after 145Hrs it shows 13965...... 
>> what is the meaning of the "life time" display / windows/..... 
>> 
>> Please advise. 
>> 
>> Many thanks , 
>> Ernie. 
>> 
>> 
 
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