Test Notes; Test Note 1; Test Note 2; Test Note 3 - Tektronix PM 101 Instruction Manual

Maintenance and Troubleshooting-PM 101

Test Notes

Test Note 1. Turn the 7D02 off and on to initialize
default conditions. After the Powerup Diagnostics have
run, press the TRIGGER key and the START/STOP
button. Check that the two leftmost DATA and ADDRESS
characters and the center pair of ADDRESS characters
are all the same, and that the two rightmost characters in
the DATA and ADDRESS columns are the same, e.g.:
LOC ADDRESS
OOOT 3636FE
3636FF
001
002 373700
003 373701
373702
004
Test Note 2. Change the default program to all "O"s as
follows: Press the IMMEDIATE, DISPLAY, and PROGRAM
keys. Move the CURSOR to the Word Recognizer Data
field and enter sixteen "O"s. Press the START/STOP
button and press the DATA SCROLLING ( up) key. The
display should look like this:
LOC ADDRESS
013 FFFFFE
014 FFFFFF
015T 000000
016 000001
017 000002
Test Note 3. Change the default program as follows:
Press the IMMEDIATE, DISPLAY, and PROGRAM keys.
Move the CURSOR to the Word Recognizer Data field and
enter a hexadecimal "2" in the rightmost place. Also enter
a hexadecimal "2" in the rightmost place of the Address
field. Leave C0 through C5 all "O"s. Move the CURSOR
down and enter a "1" in the Clock Qualification field to
select USER CLOCK QUALification. Move the CURSOR
down again and enter four ones in the leftmost places of
the ANDED CLOCKS field. Press the START/STOP
button to run this program. A trigger should occur and the
data should look Ii ke this:
LOC ADDRESS
FFFFFB
013
014 FFFFFE
015T 000002
016 000003
017 000006
000007
018
019 OOOOOA
00000B
020
021 OOOOOE
022 000012
6-12
DATA CONTROL
36FE 0110
36FF 0110
3700 0111
0111
3701
3702 0111
DATA CONTROL
failure.
FFFE 1111
FFFF 1111
0000 1111
0001 0000
0002 0000 checksum on the Personality Module ROM. If the
calculated value is reported as an error as follows:
test will also fail. However, if the first part of sub-test 9-1
failed and the second part also failed, this test still might
pass since the checksum is location independent.
DATA CONTROL
FFFB 1111
FFFE 1111
Recognizers are programmed according to data stored in
1111
0002
the Personality Module ROM:
0003 0000
0006 0000
0007 0000
OOOA 0000
000B 0000
OOOE 0000
0012 0000

Diagnostic Monitor-Test Modules

Module Test 9-1. This sub-test reads a byte at 3: E010
in the Personality Module ROM to read the ROM length.
Using this, it locates the ROM trailer and reads the value at
3:YYFC (where YY is the value read from 3:E010). The
value read at 3:YYFC is compared with the value at
3:YYFD, which should be its complement. If the two bytes
are not complementary, an error message is printed as
follows:
FAIL 3E7FD-X
1
FAIL 3YYFD-X
3:E010
Where: X signifies the first non-complementary data
bit when the two bytes are com pared on a bit­
by-bit basis (starting with the LSB).
If the ROM part number is correct the following
message is printed:
PASS 0853-XX
Note that this is the only time that any data follows a
true PASS indication. In other cases where a number
follows a PASS signal, there was actually an intermittent
Module Test 9-2. This sub-test calculates a 16-bit
calculated value does not match the expected value, the
2 FAIL F113
If the first part of sub-test 9-1 failed, it is Ii kely that this
NOTE
The Self Test Stimulus Circuitry on the Personality
Module must be connected for the remaining sub­
tests in Module Test 9.
Module Test 9-3. Before this test is run, the four Word
D15-D0
A23-AO
WR1 0000
000000
WR2
55555 555555
AAAA
AAAAAA
WR3
WR4 FFFF
FFFFFF
2K ROM
INCORRECT VALUE @
cs
C4 C3 C2 C1 C0
0 0
0 0
0 0
1
1 0
1 0
0
0
1 0
0
1
1
1 1
@