[time-nuts] Auston 2100F

[Stanley Reynolds]

With my VE2ZAZ GPS Standard connected to the 2100F for 12 hours getting E09 -2.7 and -409.55 usec is this reasonable the E10 numbers from the cell site standards below looked better ? The cell site standards are not GPS and have not been calibrated in years. All have been powered up for weeks.

What I'm calling Cell site standards are a:

Rubidium ED2R849 G4 - Frequency Generator Shelf Lucent/Efratom Frequency Generator 10 Mhz
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=310033388427

and 

Ball Efratom MRK series rubidium frequency standard , USAF demil surplus model # 808-400-8
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130205512764
The VE2ZAZ GPS standard is using a Garmin 25LVC and Efratom 10MHz OCXO model # 105243-001.
All in a climate controlled basement and the Efratom 10MHz OCXO is isolated with 2" of styrofoam.

Stanley

----- Original Message ----
From: Stanley Reynolds <stanley_reynolds at yahoo.com>
To: time-nuts at febo.com
Cc: stanley_reynolds at yahoo.com
Sent: Wednesday, June 11, 2008 11:12:49 AM
Subject: Auston 2100F


Just got one on Ebay, it was reported with display problems and possibly not working. The display problem was real but it appears to work fine. Thanks Brooke Clarke his quick start for the 2100T works for the 2100F if you substitute "ACQ" key for "Master" key. Fixed 1/2 of the display problem pushing on the backside of the display but need to unsolder the back-light to remove and reset the display I think. Also have the key bounce problem with the tantalum caps, these small problems are very minor. 
 
Don't have the GPIB interface but the chart output looks like it outputs a voltage between 0-15 volts at the start with it tending toward the millivolts volts as it continues. One cell site Rubidium/Quartz standard getting to E10 4.7 to 5.0 overnight have another started today at E10 8. a little higher start than the first. 
 
Looking for some more info on operation and if setting the Time Constant to 3200GRIs is important ? Also have not set the total emission delay as I'm guessing it has no effect except with the 2100T.
 
Stanley