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Block Diagram Theory of Operation
Block Diagram 3 HP/Agilent 8922B Only
A37 Sequence Controller
TheA37 Sequence Controller assembly contains the switches which cause an HP/Agilent
8922B to function like an HP/Agilent 8922B instead of an HP/Agilent 8922A. Activating
the switches causes the Clock, Data, Pulse Modulation, and Frequency Hop data to be
generated using the HP/Agilent 8922B modules.
The 270.833 kHz clock and data signals, which are normally routed from the front panel,
arenow received from the A36 FIFO/GPIO assembly with the clock and data all properly
synchronized. The pulse modulation and frequency hop information from the external
computeris stored in the A37 Sequence Controller assembly, where it is synchronized and
routed to the signal generator portion of the HP/Agilent 8922B to be transmitted.
Likethe A36 FIFO/GPIO assembly, the HP/Agilent 8922B software also contains a Frame
Control RAM test, and a HOP RAM test, to verify the ability of the external computer to
read and write to the A37 Sequence Controller assembly.