Dark Pixels Specifications; Newtons Rings - Agilent Technologies 8719ET Service Manual

Digital Control Troubleshooting
Display Troubleshooting (A18,A19)

Dark Pixels Specifications

Dark "stuck on" pixels may appear against a white background. To test for these dots,
press the following:
SERVICE MENU
System
In a properly working display, the following will not occur:
— more than 12 stuck pixels (not to exceed a maximum of 7 red, green, or blue)
— more than one occurrence of 2 consecutive stuck pixels
— stuck pixels less than 6.5 mm apart

Newtons Rings

To check for the patterns known as Newtons Rings, change the display to white by pressing
the following keys:
SERVICE MENU
System
Figure 6-3 illustrates acceptable and non-acceptable examples of Newtons Rings.
Figure 6-3 Newtons Rings
6-8
TESTS
62 x1
TESTS EXECUTE TEST
62 x1
RF Network Analyzers
EXECUTE TEST CONTINUE
CONTINUE
8719ET/20ET/22ET
8719ES/20ES/22ES
Service Guide