Agilent Technologies 4284A Service Manual page 110

These troubleshooting aids provide a list of test pOi nts. The A3 board test point locations for
the standard 4284As are shown in Figure 4-A3-1 , and the A3 board test point locations for
Option 001 4284As are shown in Figure 4-A3-2 .
Test Point
A3TP1
A3TP2
A3TP3
A3TP4
A3TP5
A3TP6
A3TP7
A3TP8
A3TP9
Table 4-A3-2. A3 Test Points
Signal Name Description
1-
V Converter Output
I V
Ground Line
CND
Lc gain amplifier signal
Le
}:·RR
Voltage Signal proportional to the c urrent trough
the DUT
Ground Line
CND
Voltage Signal Across the DUT
l�DUT
+5 V DC
-1 2 V DC
+1 2 V DC
4-A3-2