ment"
>
> Sent: Wednesday, November 16, 2011 9:49 PM
> Subject: Re: [time-nuts] Racal-Dana 1992 Startup -- GPIB!
>
>
>> Robert,
>> Do you have any information as to where a 9421 stands in this regime,
> specs etc? It is the same size as the 9420 and has a d
On 11/16/2011 11:56 AM, Robert Atkinson wrote:
These counters used Racal's own 94xx series OCXO's. The 04A normally had a 9442, the 04E
had the 9420. Easy way to tell which is which is the size. They are both 51mm (2")
square with the 9442 being 51mm tall and the 9420 is 96mm (3.75") tall. The
oscillator 3x10^9 per Day& temp3x10^9 0-45 deg
>>
>> 04E High stability ovened oscillator 5x10^10 per day& temp7x10^9 0-50 deg C
>> No 04* is basic crystal oscillator. If yours has a mechanical and electrical
>> trim it will be a 04A or 04E.
> ...
>>
>
tion.
> All my information comes from Racal manuals and the 1984/85 catalogue.
>
> Robert G8RPI.
>
>
>
>
> From: Larry McDavid
> To: Robert Atkinson ; Discussion of precise time and
> frequency measurement
> Sent: Wednesday
quency measurement"
Sent: Wednesday, November 16, 2011 7:56 PM
Subject: Re: [time-nuts] Racal-Dana 1992 Startup -- GPIB!
These counters used Racal's own 94xx series OCXO's. The 04A normally had a
9442, the 04E had the 9420. Easy way to tell which is which is the size.
They are b
mes from Racal manuals and the 1984/85 catalogue.
Robert G8RPI.
From: Larry McDavid
To: Robert Atkinson ; Discussion of precise time and
frequency measurement
Sent: Wednesday, 16 November 2011, 18:25
Subject: Re: [time-nuts] Racal-Dana 1992 Startup -- GP
X N2469R
To: time-nuts
Sent: Wednesday, 16 November 2011, 16:47
Subject: [time-nuts] Racal-Dana 1992 Startup -- GPIB!
I found a use for the GPIB interface on my counter - record
the frequency drift of its internal timebase during warm up.
It looks like an oven warming up. I don't know exactly
p7x10^9 0-50 deg C
No 04* is basic crystal oscillator. If yours has a mechanical and electrical
trim it will be a 04A or 04E.
HTH,
Robert G8RPI.
From: Chuck Forsberg WA7KGX N2469R
To: time-nuts
Sent: Wednesday, 16 November 2011, 16:47
Subject: [time-nuts] Rac
On 11/16/2011 8:47 AM, Chuck Forsberg WA7KGX N2469R wrote:
I don't know exactly which
timebase my 1992 has, but I did notice the 5 to 10 MHz doubler
on the back of the oscillator, The back has separate coarse
and fine frequency adjustments. Can someone identify which
timebase is fitted to thi
I found a use for the GPIB interface on my counter - record
the frequency drift of its internal timebase during warm up.
It looks like an oven warming up. I don't know exactly which
timebase my 1992 has, but I did notice the 5 to 10 MHz doubler
on the back of the oscillator, The back has separat
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