Agilent Technologies 4284A Service Manual page 110

These troubleshooting aids provide a list of test points. T h e A3 board test point locations for
the standard 4284As are shown in Figure 4-A3-1, and the A3 board test point locations f o r
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
Description
Signal Name
I-V Converter Output
I V
GND Ground Line
LC Lc gain amplifier signal
Voltage Signal proportional to the current trough
ERR
the DUT
GND Ground Line
E D U T Voltage Signal Across the DUT
+5 V DC
-12 V DC
+12 V DC
4-A3-2