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1260-100/101 Adapt-a-Switch Carrier Module User Manual
Fail LED does not come on:
6. Verify that the Option-01T is installed in the appropriate 1260-100 Carrier or 1260-Series
module as described in Option-01T in Chapter 2: Getting Started. Remember, the only Fail
LED that will illuminate is the one on the module containing the Option-01T.
7. Verify that the Fail LED cable is properly connected to the Option-01T. If the Fail LED is not
properly connected, then connect it and go back to step 1. If the Fail LED is properly
connected and the Fail LED still does not illuminate, then contact Racal Customer Support.
Incorrect response or no response from Option-01T:
8. Verify that the logical address to which you communicate matches the logical address DIP
switch setting on the Option-01T.
9. If this fails to correct the problem, then contact Racal Customer Support.
Incomplete module list:
10. Review the Option-01T section in Chapter 2: Getting Started. Verify that:
•
the Option-01T is installed in the appropriate 1260-100/101 Carrier or 1260-Series module.
•
the logical address of the Option-01T is either set to 255 or to an address that is unique
from that of any other module installed in the same chassis.
•
all carriers or 1260-Series modules that do not have an Option-01T do have the Local Bus
Jumper Assembly (P/N 405951) and Bus Grant Jumper Assembly (P/N 405951-003)
installed. See VXI Local Bus Connections in Chapter 2: Getting Started in the
Option-01T Instruction Manual.
•
all twelve Local Bus daisy-chain switches are closed on all carriers and 1260-Series
modules except the last one on the right. The last module on the right must have all twelve
Local-Bus daisy-chain switches open. Also, if only one switch module (1260-100/101
Carrier or 1260-Series module) is used, then the Local Bus daisy-chain switches must all be
open.
If this does not correct the problem, then proceed to step 11.
11.
Try to isolate the problem to a single 1260-100/101 Carrier or 1260-Series module by removing
others from the chassis. Remember always to install the Option-01T in the module that is left-
most in the group.
C-3
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