Quote:
Originally Posted by crwilli
Mark,
What do the model designations stand for? It is a little confusing to see multiple versions of an OP21.
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Multiple Output Versions (option to use built in power supply or have model that uses external power supply)'
Model number: UPOCXO-OP21A Model with built-in AC power supply
Model number: UPOCXO-OP21A-D External DC dedicated model
Model number: UPOCXO-OP20A Model with built-in AC power supply
Model number: UPOCXO-OP20A-D External DC dedicated model
Model number: LTPW01P External DC power supply (with panel)
OP'XX" or in this case, OP21A or OP20A is the performance level of the OCXO. OP21 is a touch better in principal than OP20A, differences are minor
Single Output Versions (only use external power supply);
Model number: UPOCXO-OP21A-1 External DC dedicated model
Model number: UPOCXO-OP20A-1 External DC dedicated model
Model number: LTPW01P External DC power supply (with panel)
Single Output / Lower Precision (OP19, 18, 17, 16, 15, 14, 13, see table below on that page rating and price option), this line reads like it is meant to be more economical choice;
Model number: UPOCXO-MA-OPxx External DC dedicated model
Model number: LTPW01P External DC power supply (with cast panel)
There are products (clock distributor) and other prior products.
Note I'm not listing all legacy/prior products above, only the newer ones.
They have a line of products for each need and multiple budgets now.
That's how I read through the plethora of options now available.
Hope this helps...