The JM38510/11201BCA crosses to a LM139 which is the Mil-Spec version of
the LM339.
Mike
On 4/1/2012 2:39 PM, [email protected] wrote:
Paul thank you.
I tried google and only got links to advertise other parts. Makes sense,
unit has a summary bit output, probably checks 4 levels and gives a lock
output. Different from M100 and other Efratom products. Still hunting for the
85 Hz, 127 Hz on the M100 is 5V pp into the phase detector. can not rule
out the actual cell, maybe the step recovery diode. Will try every thing else
before I go there.
Bert.
In a message dated 4/1/2012 3:14:55 P.M. Eastern Daylight Time,
[email protected] writes:
Strange indeed Bert I put the whole number into google and had 5 hits. The
first number is actually JM then the number but its a quad voltage
comparator according to the data archive. pdf is available and looks like
numbers of manufacturers made it. PMI TI Nat nalog dev. They are still
available also.
Regards
Paul.
On Sun, Apr 1, 2012 at 1:50 PM,<[email protected]> wrote:
In the past I have asked if some one has any info of the Efratom M3100. I
have carefully dissected the unit and checked functionality. It sweeps
but
does not lock. Lamp signal is strong 60 MHz and 5.xx all work properly
and
can be seen on a spectrum analyzer The problem is in the loop and there
is
not enough signal into the phase detector. Trying to follow the detector
output is challenging because lack of information and packaging density.
Typical loop frequency in a M100 is 127/254 in this case I see 85/160. I
would
expect in a military application they would go up not down for vibration
purposes. Tracing the circuits is also made more difficult because of
the
use
of mil parts and mil nomenclature. I have most cross correlated and I am
down to one PMI part 38510/11201BCA. Does any one have any info, such a
nice unit, would like to make it work.
Thanks Bert Kehren
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