COMPONENT MAINTENANCE MANUAL
IN 1502H RADAR INDICATOR
TM109102
6-6
May/01
3. Definition of a Hardware/Software Board
The hardware/software board (205-) bill of materials contains four categories of items.
a. The part numbers of the board label:
(1) For 12-digit 205-0XXXX-00YY board labels, the first ten digits are contained
on a label part number of 057-05252-XXXX and the last two digits are
specified as 057-05335-00YY.
(2) For 9-digit 205-WWWW-ZZ board labels, the first seven digits are contained
on a label part number of 057-050WW-00WW and the last two digits are
specified by 057-05252-00ZZ.
The 205-0XXXX-00YY and the 057-05252-00YY part numbers are
incremented whenever the revision number of any one or more of the
125-0XXXX-XXRN part numbers is incremented. This means that the RN
portion of the part numbers for the 057-05252-XXRN and the
205-0XXXX-XXRN will be the same. A circuit board identification tag is
illustrated below.
b. The software programmable device set assemblies (125-):
Each 125- programmable device set constitutes all the software for a unique
microprocessor on the hardware board. The group of 125- programmable device
sets constitutes all of the software for all of the microprocessors.
(1) 125-0XXXX-XXRN Telephonics part numbers
The 125-0XXXX-XXRN part number is a bill of materials listing all of the
122-0XXXX-XXRN programmed devices in a software set for a given circuit
board. There may be only one 122-0XXXX-XXRN part number listed, or there
may be several. Whenever the revision number (RN) of any one or more of the
122-0XXXX-XXRN programmed devices is incremented in a new software
release, the -XXRN portion of the 125-0XXXX-XXRN part number is also
incremented. This 125-0XXXX-XXRN bill of materials also identifies the “U” or
“I” circuit designators used to identify the programmed devices on assembly
drawings and schematic diagrams.
(2) The 122-0XXXX-XXRN part number is used to identify an individual integrated
circuit or other device containing software.
c. The non-software programmable device set assemblies (126-) which fulfill
software requirements.
205-06616-
0000
The document reference is online, please check the correspondence between the online documentation and the printed version.