1260-X133 User Manual
Module Operation 3-6
Racal Instruments
©
2005
calculated by:
(A24 Offset of the 1260-01T) + (1024 x Module Address of
1260-X133).
The A24 address offset is usually expressed in hexadecimal. A
typical value of 204000
16
is used in the examples that follow.
A 1260-X133 with a module address of 4 would have the base A24
address computed as follows:
Base A24 Address of 1260-X133 = 204000
16
+ (400
16
x 4
10
)
=
201000
16
The control registers for Adapt-a-Switch plug-ins and conventional
1260-Series modules are always on odd-numbered A24
addresses. The three control registers for the 1260-X133 reside at
the first three odd-numbered A24 addresses for the module:
(Base A24 Address of 1260-X133) + 1 = Control Register 0
(Base A24 Address of 1260-X133) + 3 = Control Register 1
(Base A24 Address of 1260-X133) + 5 = Control Register 2
So, for our example, the first three control registers are located at:
205001
Control Register 0, controls channels
00, 800, 20, 40, 810, 60
205003
Control Register 1, controls channels
01, 801, 21, 41, 811, 61
205005
Control Register 2, controls channels
02, 802, 22, 42, 812, 62
Table 3-1
shows the channel assignments for each control
register.
