Racal Instruments 1260-82, User Manual

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1260-82 User Manual
Module Operation 3-1
Chapter 3
MODULE OPERATION
General
Information
The 1260-82 may be operated either in message-based mode or
in register-based mode.
When the message-based mode of operation is used, commands
are sent to the 1260-01T command module. The 1260-01T
command module interprets the commands, and operates the
1260-82 module by sending 8-bit bytes to control registers on the
1260-82 module.
A conceptual view of the message-based mode of operation is
shown in Figure 3-1 below.
Figure 3-1, Message-Based Mode of Operation
When the register-based mode of operation is used, the user
writes to the control registers on the 1260-82 module directly.
The 1260-01T command module does not monitor the operations,
and does not track the state of the optical switch on the module in
this mode.
A conceptual view of the register-based mode of operation is
shown in Figure 3-2 below.
Figure 3-2, Register-Based Mode of Operation
PC (MXI)
1260-01T
1260-82
VXIbus
"CLOSE (@7(1))"
Write value 2 to A24 Address 205C05
PC (MXI)
1260-82
Write value 2 to A24 Address 205C05