The trimpots in the optical phase shifter are an expensive surface mount package.
Consider changing these over to the cheaper bourns 3296W package, especially because with so many filter plug-in boards, it's easy to hit price breaks on trimmers if you build a few at a time.
The trimpots in the optical phase shifter are an expensive surface mount package.
Consider changing these over to the cheaper bourns 3296W package, especially because with so many filter plug-in boards, it's easy to hit price breaks on trimmers if you build a few at a time.