Service manual

12 Verification
Constant Voltage (CV) Tests
Test Setup
Connect your dc voltmeter leads to only +S and -S (see Figure 2-1), because the power supply regulates the voltage
between these points, not between the + and - output terminals.
Test Procedures
Perform the test procedures in Table 2-4. The CV tests are:
• Voltage Programming and Readback Accuracy
• CV Load Effect
• CV Source Effect
• CV Noise (PARD)
• Transient Recovery Time
Note The tests are independent and may be performed in any order.
a) CV Test Setup with 6.6kW Electronic Load
S
+
S
-
DVM
-
+
-
+
Electronic Load
b) CV Test Setup with 6.6kW Load Resistor
S
+
S
-
DVM
-
+
Note: Start with switch closed, take full load reading,
open switch and take no load reading.
6.6kW Load
Resistor
Figure 2-1. Constant Voltage (CV) Test Setup