I believe it's a CDMA thing. I have a Nortel GPSTM that came out of CDMA site.
It has the same thing.
---------------------------------------
(Mr.) Taka Kamiya
KB4EMF / ex JF2DKG
On Sunday, September 29, 2019, 9:36:55 AM EDT, Gregory Beat via time-nuts
<time-nuts@lists.febo.com> wrote:
A new resident arrived at the “Time Cave” this weekend, the HP/Symmetricom
58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD clock
display).
Acquired in USA, cheaper than current Asian exporter.
https://accusrc.com/uploads/datasheets/4975_58503b.pdf
Supposedly stored in a closet since 2010 (verified by its diagnostic logs), the
unit only had 2,000 hours of operation.
Today, it happily has a GPS Lock and is currently “re-learning” where the 1 PPS
and 10 MHz outputs wandered (taming Lazarus).
—
One surprise, it has Option 2 (1PP2S) installed on its Rear Panel.
Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a
pulse every other second, synchronized to the even seconds in GPS time.
Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.).
===
QUESTION:
What Specific Applications would use this 1PP2S output regularly??
greg
Sent from iPhone 6s
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