[time-nuts] Thunderbolt Power Question

[Jim Hall]

The ThunderBoltBook2003 pdf manual Section 3.2 Table 3-1 page 3-4 states 
that the -12V is the "Prime Voltage for the OXCO".  This seems to refute the 
common belief that the -12V is (only) for the RS232 interface.

Jim Hall



--------------------------------------------------
From: "michael taylor" <mctylr at gmail.com>
Sent: Sunday, July 06, 2008 11:50 AM
To: "Discussion of precise time and frequency measurement" 
<time-nuts at febo.com>
Subject: Re: [time-nuts] Thunderbolt Power Question

> On Sat, Jul 5, 2008 at 10:44 PM, Tom Clifton <kc0vsj at yahoo.com> wrote:
>> As I sit here reviewing the power requirements for the Thunderbolt, I 
>> note that the -12v is only 10ma.  Does this indicate that it is only used 
>> for the RS232 output and if so for a battery backup I can "cheat" and 
>> only service the +12v (750ma)and +5v (400ma)?
>>
>
> I'm not sure, but it may be (also?) used for an op-amp as -Vs.
>
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