[time-nuts] Trak 8821B ---- was Z3815A Internal SMA 10Mhz Output
GandalfG8 at aol.com
GandalfG8 at aol.com
Wed Aug 22 19:37:08 UTC 2012
In a message dated 22/08/2012 19:21:03 GMT Daylight Time, GandalfG8 at aol.com
writes:
With regards to the Oncore VP carrier phase measurement option, I'm not
too sure that the 8821B does actually make use of that.
My 8821B, manufactured in 1999, does contain the 8 channel Oncore VP
B8121Z116 as I mentioned previously, and the 8821 data sheet from 2004 does
refer to all 8821 models as using an 8 channel receiver, but the 8821A manual
from 1997 refers to that as using a 6 channel receiver.
Given that the only obvious difference between the 8821A and 8821B seems
to be the oscillator module I'm assuming the change to the 8 channel
receiver would have occured simultaneously for both versions, and am wondering if
that might not just have been based on availability rather than to take
advantage of any technical enhancements.
-----------------
Whoops, need to get better reading glasses!
It was a 2002 datasheet stated the 8821 used an 8 channel receiver and in
an October 2003 datasheet this had increased to 12 channels, I still
suspect that these were changes inflicted by availability.
Regards
Nigel
GM8PZR
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