Keithley 2002

To Next Page

To Previous Page

Troubleshooting

2-71

Bit patterns

Test 403.1 — Ground switch

Type

Pass/Fail

Fault message Ground switch

Description COMMON at pin 9 of U414 is multiplexed to pin 8 and measured as in the previous 400 level

tests.

Drawing reference Analog Board; 2002-100

Components U414 and associated components

Bit patterns .

Bit pattern* Register

—U400—

01010011

—U811—

00001101

—U224—

00010111

—U432—

11101100

—U810—

00000011

—U206—

01110000

—U203—

10001110

—U411—

11111011

—U809—

11100111

—U207—

11001111

—U221—

11101001

—U406—

01001100

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.