[time-nuts] LPRO-101 Status; Part Deux

[Richard W. Solomon]

The time it takes to Lock has seemed to settle down to 20 minutes. That
seems excessive if I read the manual correctly. How have other folks made
out with theirs ?

73, Dick, W1KSZ

-----Original Message-----
>From: "Richard W. Solomon" <w1ksz at earthlink.net>
>Sent: Jul 25, 2009 10:09 AM
>To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
>Subject: Re: [time-nuts] LPRO-101 Status
>
>At first I did not monitor the Lock Voltage, just the frequency. After
>it finally locked (~ 2 hours) the case temperature was not that hot. I
>could leave my hand on it.
>The frequency did vary about 10 MHz (+/- 200 Hz). The second time
>I did monitor the Lock Voltage. It was stable (~4.6v) until Lock, when
>it went to Zero.
>I was hesitant to return it due to the Postage costs involved. Glad it
>did Lock.
>
>73, Dick, W1KSZ
>
>-----Original Message-----
>>From: Don Key <don.key at ntlworld.com>
>>Sent: Jul 25, 2009 1:36 AM
>>To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
>>Subject: Re: [time-nuts] LPRO-101 Status
>>
>>I recently bought 2 LPRO-101's. The first worked perfectly, locking up 
>>within 5 minutes.
>>
>>The second one would not lock within 15 minutes, so I returned it (to China) 
>>for a replacement. As I didn't have a heatsink, I didn't want to leave it 
>>any longer. Besides, if it doesn't lock within 5 minutes, then I assume it 
>>is faulty. Instead of the frequency sweeping up & down, the Xtal volts 
>>started at around 6V2, then swept down to 0V & stayed there, leaving the 
>>frequency about 180Hz low, as seen on a HP 8591E analyzer.
>>
>>Out of interest, did your unit sweep up & down, or was it similar to mine?
>>
>>...Jim
>>
>>
>>----- Original Message ----- 
>>From: "Richard W. Solomon" <w1ksz at earthlink.net>
>>To: <time-nuts at febo.com>
>>Sent: Friday, July 24, 2009 6:39 PM
>>Subject: [time-nuts] LPRO-101 Status
>>
>>
>>>I fired it up last night and it took about 2 hours to lock.
>>> This morning it only took about 20 minutes to lock.
>>> I guess I need to stir the electrons a bit more ??
>>>
>>> It's sitting there on the counter, with a 1000 sec Gate time
>>> and it is as accurate as I can measure (BTW, the counter
>>> reference is a GPSDO - TrueTime).
>>>
>>> Looks like a keeper.
>>>
>>> 73, Dick, W1KSZ
>>>
>>>
>>> 
>>
>>
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>
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