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The DA series of distribution amplifiers can be operated
in a redundant configuration for ultra high reliability
systems.
Two DA series amplifiers are connected in parallel.
Should one unit fail, the second unit will automatically
be switched in, to continue to provide an output
This option is ideal for installations that need extra
reliability.
Either one or two external oscillators can be connected
to the DA series set-up. For example one system where
these units have been used had two
GPS10RB Frequency Standards
in the system. Both
GPS10RB's were already connected in a fully redundant
system. Two DA101010's were then connected to add
further 10 MHz outputs.
Each redundant pair was labelled unit A and unit B.
Normally GPS10RB (A) and DA101010 (A) provides the 10
MHz output. GPS10RB (B) and DA101010 (B) are the
redundant units.
If any unit fails, there would still be an output. Thus
if GPS10RB (A) failed, GPS10RB (B) would take over.
Even if GPS10RB (A) failed and DA101010 (B) failed,
there would still be an output from GPS10RB (B) and
DA101010 (A).
The advantage of this system is that is isn't any master
or slave units. All units are identical. Simply
whatever units are switched on first becomes the master
units.
Thus if any GPS10RB or any DA101010 failed, there would
still be an output from the remaining working units.
Contact Precision Test Systems for more details of this
option. |
