Ooops, thanks for the correction...
Then I assume that if the voltage is too low for the negative reference
headroom, severe stability problems could result.
Didier KO4BB
------Original Message------
From: Mark Sims
Sender: time-nuts-boun...@febo.com
To: Time-Nuts
ReplyTo: Time-Nuts
Subject: [time-nuts] Tbolt failure modes
Sent: May 11, 2012 12:14 PM
It also makes the negative DAC voltage rail. The Tbolt DAC swings from -5V to
+5V. Lose the -12V and you can lose oscillator control.
-----------------------------
The -12V is only used to support the RS-232 driver. The CPU should be running
and you should have discipline even without the -12V
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