Philips DPM8000 Technical Documentation Manual page 11

Notes:

Distances are measured from the front flange surface of the image lens

Symbols are to be mounted with a pitch of 15 +/- 3° away from the engine.

Maximum allowable roll angle of symbols relative to the engine to the engine mounting base
plane is +/- 3°.
DPM 8000 series - Technical Specification and Advanced Device Configuration Page 11