Honeywell VA201T Calibration Handbook page 78

Calibration Handbook
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9. Bayonet-style Assembly only used with Trident-type Excel units - assembly consists of
Telescope and mirror
Datum mount
Bayonet attachment
Datum mount handle for rotating and locking assembly
Align telescope's two bayonet slots with two locating pins on unit cowl and seat telescope mount fully on
cowl. Rotate telescope to a comfortable viewing position and hold it in that position. Use mount's locking
handle to rotate bayonet fitting in a clockwise direction until securely locked on cowl.
Proceed with alignment
10. Align Excel using assembly adjustment screws. Adjust so cross-hairs viewed through alignment telescope
are centered on window of the other Excel unit.
View image with eye placed approximately 3 inches from viewfinder. Use viewing position that ensures
full circular view is in sight.
An ellipse appears when slightly off axis. Do not adjust using telescope's elevation and windage adjusters
- they are factory set
Iteratively tighten and loosen each pair of adjustment screws sequentially in horizontal and vertical
directions until setting is correct. When correctly adjusted, tighten both adjustment screws simultaneously
Check alignment and repeat steps as necessary
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