Keithley 2002

Troubleshooting
2-100
Test 412.7 — Frequency, phase 7
Type
Circuit Exercise
Fault message None
Description This test uses the same setup as test 412.1 except that the SELFTEST line is toggled through one
more iteration to finish the frequency measurement.
Drawing reference Analog Board; 2002-100
A/D Converter; 2002-160
Bit patterns
Test 412.8 — Frequency, phase 8
Type
Circuit Exercise
Fault message None
Description This test uses the same setup as test 412.1 except that the SELFTEST line is toggled through one
more iteration to finish the frequency measurement.
Drawing reference Analog Board; 2002-100
A/D Converter; 2002-160
Bit patterns
Bit pattern* Register
—U400—
01001100
—U811—
00001001
—U224—
00010111
—U432—
11001010
—U810—
00000000
—U206—
01110000
—U203—
10001110
—U411—
10111000
—U809—
00000000
—U207—
11001111
—U221—
11101001
—U406—
11101110
AD_STB
MUX_STB
R1_STB
R2_STB
*Bits associated with register IC terminals as follows:
QQQQQQQQ
87654321 87654321 87654321 87654321
IC pins: Q8=11, Q7=12, Q6=13, Q5=14, Q4=7, Q3=6, Q2=5, Q1=4.
Bit pattern* Register
—U400—
01001100
—U811—
00001001
—U224—
00010111
—U432—
11001010
—U810—
00000000
—U206—
01110000
—U203—
10001110
—U411—
10111000
—U809—
00000000
—U207—
11001111
—U221—
11101001
—U406—
11101100
AD_STB
MUX_STB
R1_STB
R2_STB
*Bits associated with register IC terminals as follows:
QQQQQQQQ
87654321 87654321 87654321 87654321
IC pins: Q8=11, Q7=12, Q6=13, Q5=14, Q4=7, Q3=6, Q2=5, Q1=4.