Hi,
Well, "ambient temperature" as per telecom terminology means the
temperature of the surrounding air in the aisle of the rack. The
Bellcore/Telcordia GR-63 and ETSI EN 300 019 (series) would stand for
the formal definition. This is also in line with the AT Reliability
manual. It is expected
-Original Message-
From: Dana Whitlow
Sent: Monday, July 19, 2021 9:02 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Re: Z3801A Temperature
Hal, in cases where it is physically applicable, the temperature rating is
generally that of the flange which
Hi
The implicit assumption on pretty much all telecom gear these days
is moving air. How much moving air? You would have to get into the
spec for the OEM that bought it. It might be listed there, it could easily
have been in somebodies notes from a phone conversation …..
As long as the case
Hal, in cases where it is physically applicable, the temperature rating is
generally
that of the flange which is intended to be bolted to a heat sink.
Dana
On Mon, Jul 19, 2021 at 7:30 AM Hal Murray
wrote:
>
> I have one sitting on a shelf. No air-conditioning. The top plate is
> warm,
>
