[time-nuts] Austron 2200A investigation

[Rob Kimberley]

Maybe a bit quick off the mark here. 

They definitely used the DDS technique with their later telecom modules, but
thinking about it, I'm now not sure the 2200 or 2201 used this.

Apologies for any confusion.

Rob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Rob Kimberley
Sent: 19 May 2013 17:43
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Austron 2200A investigation

The Rb was externally calibrated and then left to free run. They then used
DDS to get frequency o/p. 
Austron used this technique a lot with their later telecom GPS modules.

Rob

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Luciano Paramithiotti
Sent: 19 May 2013 09:14
To: time-nuts at febo.com
Subject: [time-nuts] Austron 2200A investigation

Hi,

I have an Austron 2200A with FRS rubidium option. After 30 min. powerup and
locking, PPS and Freq alarm goes up. The receiver position and the FRS  are
ok. Looking the Rubidium and controller connection cable, I have seen the
pin 8 (frequency control)of the rubidium is never been connected. The
question are:

1) how the PLL can happen?  Cannot ! Different operation?
2) some one have the interface's schematic p.n. 10312676 "Osc cntl freq
cntr" ?

thank you,
--
Luciano
Timeok
visit : www.timeok.it
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