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Model T940 User Manual
Publication No. 980938 Rev. K
Functional Description 4-4
Astronics Test Systems
VXI
LBUSA
LBUSC
Slot 1
IMA
DSA
DSB
SIMB
SIMA
IMB
CONTROL
+3.3V
INTER
MODULE
CONTROL
Slot 2
INTER
MODULE
CONTROL
LBUSC
LBUSA
Slot 3
INTER
MODULE
CONTROL
Slot 4
INTER
MODULE
CONTROL
LBUSC
LBUSA
LBUSC
LBUSA
LBUSC
Slot 12
INTER
MODULE
CONTROL
LBUSA
Inter-Module Control
IMJMPR
IMJMPR
+3.3V
IMJMPR
Figure 4-3: T940 Inter-Module Control Block Diagram
Terms Used in this Section
DRM
(Digital Resource Module) A DRM is a single T940 module. A
DRM is comprised of a Digital Board (DB) and one or two
Driver/Receiver boards (DRA and DRB)
DRS
(Digital Resource Suite) A DRS is two or more adjacent DRMs
synchronized together to form a digital test system with more
than 64 channels.
DRA
Driver/Receiver A
DRB
Driver/Receiver B
DSA
Data Sequencer A
DSB
Data Sequencer B
Coupled
Used to describe a DRM sequencer that is included in a DRS
chain.