Keithley 2002

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Troubleshooting

2-91

Bit patterns

Test 409.3 — Setup for test 409.5 and A/D measurement for test 409.6

Type

Circuit Exercise

Fault message

None

Description

In this phase, DAC A is programmed with 0s, and the output at pin 2 is tied to C463. The rest of

this test is the same as Test 408.3.

Drawing reference

Analog Board; 2002-100

Bit patterns

Bit pattern* Register

—U400—

01111101

—U811—

00001101

—U224—

00010111

—U432—

11111111

—U810—

00000011

—U206—

01110000

—U203—

10001110

—U411—

00111010

—U809—

11100111

—U207—

11001111

—U221—

11101001

—U406—

01101100

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.