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Got your post, but you're right - not much activity!
Rob K
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Dave Brown
Sent: 27 August 2007 06:28
To: Discussion of precise time and
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I am replacing a defective Channel C board in my
trusty 5328 counter. The old board is PN# 05328-20016
and the replacement (off eBay) is 05328-60045. Not
quite plug-N-play... The new board has an SMA
connector (I can handle
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Tom,
It might be from a military version? If so then I don't know if they are
compatible as the setup's are somewhat different with all the daughter
boards. I'll open mine up in a bit and take a look at the PN on the C
channel
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Hi there,
I'll break the silence :)
does anyone know about the EFC voltage compatibility range for the E1938A
oscillator? Is it 0V to 5V, or -5V to +5V etc?
How about the serial interfaces mentioned on Tom's website,
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[EMAIL PROTECTED] wrote:
Hi there,
I'll break the silence :)
does anyone know about the EFC voltage compatibility range for the E1938A
oscillator? Is it 0V to 5V, or -5V to +5V etc?
How about the serial
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In a message dated 8/27/2007 15:36:31 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
There is also an EFC DAC (at least according to the osc.pdf paper on
Rick's site) which suggests that it may be possible to
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[EMAIL PROTECTED] wrote:
Hi there,
I'll break the silence :)
does anyone know about the EFC voltage compatibility range for the E1938A
oscillator? Is it 0V to 5V, or -5V to +5V etc?
How about the serial
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[EMAIL PROTECTED] wrote:
Thanks Bruce,
I hooked +12V and +5V up to it, but there is no heater current, and no LED's
go on. There is however a small current into the +12V (90mA) and the 10.0MHz
are being generated
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[EMAIL PROTECTED] wrote:
Thanks Bruce,
I hooked +12V and +5V up to it, but there is no heater current, and no LED's
go on. There is however a small current into the +12V (90mA) and the 10.0MHz
are being generated
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Hi Bruce,
I got it to work, it even locks to -5Hz within 5 minutes and the Amber LED
goes off.
The problem was that I had only applied GND to the shield of the connector.
I added a wire to the EFC pin to EFC return, and
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In a message dated 8/27/2007 17:09:17 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Which E1938A version do you have?
Hi Bruce, I've got the two-dac version with the connector bottom-mounted...
bye,
Said
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Said,
The DB25 pinning is as per TVB's web site:
http://www.leapsecond.com/museum/e1938a/
The EFC voltage info is as follows (courtesy of Rick K):
***
The 10811 was bipolar +/-5V as you said. The cathode of
the
tuning
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Dick, W1KSZ wrote:
I have one of these E1938A's. Where is this site you are referring to ?
Thanks, Dick, W1KSZ
Dick
E1938A:
http://www.leapsecond.com/museum/e1938a/
Z3815A:
http://www.leapsecond.com/museum/z3815a/
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I have one of these E1938A's. Where is this site you are referring to ?
Thanks, Dick, W1KSZ
Bruce Griffiths wrote:
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[EMAIL PROTECTED] wrote:
Thanks
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[EMAIL PROTECTED] wrote:
Hi Bruce,
I got it to work, it even locks to -5Hz within 5 minutes and the Amber LED
goes off.
The problem was that I had only applied GND to the shield of the connector.
I added a wire
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Thank you
Bruce Griffiths wrote:
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Dick, W1KSZ wrote:
I have one of these E1938A's. Where is this site you are referring to ?
Thanks, Dick, W1KSZ
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Hi all;
I was wondering who got those!
Rich
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Just got mine and Marco Bruno's E1938s in today's mail.
Marco: it'll go out tomorrow, unless you'd like to wait until I can run an
ADEV plot on them both. Let me know.
Rick: Thank you *very* much for the free hardware; I
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In a message dated 8/27/2007 17:56:45 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
is ovenized provides a stable 2.5V to bias the diode if
you
do NOT want to use the EFC.
***
Hi Kit,
that's what I thought!
I
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In a message dated 8/27/2007 17:29:05 Pacific Daylight Time,
[EMAIL PROTECTED] writes:
Seems one of those GND pins is actually a heater on type of pin.
It might be the return for the heater so the IR drop in the high
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E1938A phase noise should be similar to 10811,
possibly even a little better far out.
Short term stability should be similar to 10811
except down around 1 second, where the AFC circuit
degrades it a little to 10^11 or so.
The
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Hi Rick,
thanks so much for providing us with the info, and units!
I got mine locked to GPS already as of 30 minutes ago.
Said
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