
Theory of Operation
Figure 3-5. A1 Power-Supply Block Diagram
Option 048: The Power Supply block diagram on page
•The Ext DC Input voltage is
•The F2 fuse rating is 2.5A,
•The T1 toroidal power transformer part number is
•The P/O B1 battery packs are deleted,
•The
•The F1 fuse and
The external dc input(s) enter the instrument via the 48V Subpanel Assembly (part number
B1 Internal-Standby Battery
Option 048: The paragraph describing the B1 Internal Standby Battery on page