Performance Verification

DC Load Ripple and Noise

Use an oscilloscope to check the DC Load Ripple and Noise on the pins of the 25-pin connector and compare the results against the limits listed in Table 5±1.

1.Set up the oscilloscope as follows:

Bandwidth Limit

20 MHz

Input Coupling

AC

Volts/Division

10 mV/div

Time Base

1 s/div

Trigger Mode

Auto

Acquisition Mode

Peak Detect

2.Connect a ground lead (less than one inch) to the 1X oscilloscope probe (P6101B).

3.Connect the probe to Pin 1 of the 25-pin connector and connect the ground lead to one of the ground pins listed in Table 5±1.

4.Check that peak-to-peak voltage displayed on the oscilloscope is less than the limits listed in Table 5±1.

5.Check the remaining voltages in Table 5±1.

Table 5±1: DC load ripple and noise check

Pin

Supply

Limits (Vp-p)

1

+5 V

50 mV

 

 

 

2

±12 V

50 mV

 

 

 

3

±24 V

150 mV

 

 

 

4

±2 V

50 mV

 

 

 

14

+12 V

50 mV

 

 

 

15

+ 24 V

150 mV

 

 

 

16

±5.2 V

50 mV

 

 

 

9, 17, 8,19, 20, 22, 24

Ground

 

 

 

 

5±2

VX1410A & VX1420A IntelliFrame Mainframe Instruction Manual