TM 11-6625-3081-23
7-36. PARALLEL BUS
7-36
INPUT CODE: PLLBUS
a . D E S C R I P T I ON
This module tests the ability of the parallel bus to transfer 16 bits of
information in parallel.
The built-in, self-test feature of the parallel bus is
used to check out the data and handshake lines of the interface.
If an error is detected during the following checks, a prompt is displayed at
the completion of the test.
The following numbers are output to the parallel bus self-test address and the
input value from the parallel bus self-test address to the AN/USM-410 is checked for
the same value.
Output -1 (all ones), O (all zeros), 1 (bit O), 2 (bit 1), 4 (bit 2), 8 (bit 3),
16 (bit 4), 32 (bit 5), 64 (bit 6), 128 (bit 7), 256 (bit 8), 512 (bit 9), 1024 (bit
10), 2048 (bit 11), 4096 (bit 12), 8192 (bit 13), 16384 (bit 14), -32768 (bit 15),
21845 (even bits), and -21846 (odd bits).
b. REPLACEMENT PROCEDURE REFERENCE
The following list provides a cross reference of replacement items to
replacement procedures.
The item column identifies the item to be replaced by
reference designation and part number.
The reference column identifies the
procedural paragraph used to perform the replacement action. The VDT screen will
display the proper sequence of repair/replace actions.
Item
(Ref Des/Part No.)
Reference
(Para No.)
1A4PS4/BKF-5-11
2-33
1A11/13231746
2-39.1
1A11A9/13081742
2-40
1A11A12/13081431
2-40
1A11A13/13081483
2-40
2A2A7A6A5/13082717
2-51
2A2A7A6A7/13082714
2-51
7-184
