[time-nuts] Information about FTS-1200

Bjorn Gabrielsson bg at lysator.liu.se
Sun Jul 3 17:35:49 EDT 2005


Thanks for all help!

My FTS-1200 behaves like this,

Pinout  #1,#5 Power & EFC return
        #2  EFC (0-10V)
        #6  Oven monitor (4.7V at start, 3.5V at steady state)
        #8  24V DC ((22V to 30V) @25C & 24V; 0.56A at start, 0.09A at
                steady state)

EFC range is about 3.5Hz from 0V to +10VR. Not very linear 0.2Hz/V -
0.3Hz/V in the low to middle range, 0.5Hz/V in the upper voltage
range. 

Current draw 0.16A 20 minutes after cold start, going below  0.10A
after 40 minutes. 

Two outputs @ 1Vrms, two at 0.5Vrms.

Some specifications (from data sheet sent to me)

Output freq      5MHz
Aging per day    1x10-10
Short term 1s    1x10-12
           10s   1x10-12     
           100s  1x10-12

Data sheet tells the FTS 1200 is part of the FTS 1000 series, which
also includes the 5MHz FTS 1000A, 10MHz FTS 1002A and 15MHz FTS 1003A
units. 

--

        Björn 

> ----- Original Message -----
> From: <bg at lysator.liu.se>
> To: "Discussion of precise time and frequency measurement"
> <time-nuts at febo.com>
> Sent: Wednesday, June 29, 2005 2:53 PM
> Subject: Re: AW: [time-nuts] Information about FTS-1200
> 
> 
> > My unit powers up run like this
> >
> > Pin #5    GND
> > Pin #8    PWR  (+24V DC)
> >
> > Pin #1   is also Ground
> >
> > The seller told me
> >
> > #1 EFC-  (which I do not understand since its GND)
> > #2 EFC+
> > #5 GND
> > #8 24VDC
> >
> > A voltage on pin#2 changes the frequency, so #2 is most probably EFC.
> >
> > >From a private response I learned that pin #6 is Oven Monitor. I have not
> > checked this yet on my unit.

> > --
> >     Björn





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