|Object Name:||NCS1 Gyro Constants Circuit Board|
|Serial No:||094 & 245|
|Manufacturer:||Marconi-Elliott Avionic Systems Ltd|
|Division:||Inertial Navigation [IND]|
|Year of Manufacture:||1987|
|Location:||Main Object Store|
CD12118AA/B DL Issue 6
Mod Record -
CD 12118 AA/A Issue 7
Qty: 2 One of two PCB's from the NCS1 Digital Computer Unit containing Individual Gyro Data for the Naval Compass Stabilizer - one for vertical constants, the other for horizontal constants. In the Brochure these are called System Alignment Constant (1) and (2).
The two sides of this PCB seem identical, the through-hole solder joints from the other side being clearly visible in each view. The reason for this form of construction is unclear but may have been a way of fitting duplicate circuits on a single board whilst maximising the isolation between them. The bare multi-layer PCB assembly was made by the Canadian Marconi Company (CMC) but it was populated at Rochester.