Troubleshooting
2-45
Test 303.1 – Input path; zero reference measurement
for test 303.2
Circuit Exercise
This measurement is exactly the same as test 301.1. Although the reading is very close
to 0V, it is not exactly zero due to offsets in the input buffer and A/D buffer circuits.
This reading is used as the zero reference for test 303.2.
DC_STB
Registers
R1_STB
Registers
R2_STB
Registers
U801
Q1:
0
Q2:
1
Q3:
1
Q4:
1
Q5:
1
Q6:
0
Q7:
0
Q8:
0
U307
Q1:
1
Q2:
0
Q3:
0
Q4:
1
Q5:
1
Q6:
0
Q7:
1
Q8:
1
U505
Q1:
0
Q2:
0
Q3:
1
Q4:
0
Q5:
0
Q6:
0
Q7:
0
Q8:
0
U800
Q1:
1
Q2:
1
Q3:
0
Q4:
0
Q5:
0
Q6:
0
Q7:
0
Q8:
0
U305
Q1:
1
Q2:
0
Q3:
1
Q4:
0
Q5:
1
Q6:
1
Q7:
1
Q8:
1
U500
Q1:
1
Q2:
1
Q3:
0
Q4:
1
Q5:
1
Q6:
1
Q7:
1
Q8:
1
U300
Q1:
1
Q2:
0
Q3:
1
Q4:
0
Q5:
1
Q6:
1
Q7:
1
Q8:
1
U302
Q1:
1
Q2:
1
Q3:
1
Q4:
1
Q5:
1
Q6:
1
Q7:
1
Q8:
0
U530
Q1:
0
Q2:
0
Q3:
0
Q4:
0
Q5:
0
Q6:
0
Q7:
0
Q8:
1
U303
Q1:
0
Q2:
1
Q3:
1
Q4:
1
Q5:
1
Q6:
1
Q7:
X
Q8:
X
U501
Q1:
1
Q2:
1
Q3:
0
Q4:
1
Q5:
1
Q6:
1
Q7:
X
Q8:
X
Note: Tables 2-10 through 2-12 provide functional descriptions of the register bits.
Type
Description
Bit pattern
Содержание 2001
Страница 1: ...Model 2001 Multimeter Repair Manual Contains Servicing Information...
Страница 129: ...Troubleshooting 2 116...
Страница 139: ...Replaceable Parts 4 4...
Страница 149: ...Replaceable Parts 4 14...
Страница 153: ...Replaceable Parts 4 18...
Страница 156: ...A Model 2001 Specifications A 1...
