68 Chapter 2 Testing Video Displays
Adjust Frequency Function
This section describes the adjust frequency control (AFC) function.
The AFC function provides you with the ability to increase or decrease the horizontal
frequency (HRAT parameter) of the active video format in increments of 2%.
Use the following procedures to increase or decrease the frequency of the active format.
To utilize the AFC function:
1. Physically connect a monitor to the 882 at any of the interfaces using a suitable cable.
2. Press the Tools key. The Tools menu appears on the 882’s display as shown below.
3. Choose AFC by pressing the adjacent item selection key. The following display
appears on the 882’s display.
This display enables you to increase or decrease the horizontal frequency parameter
in increments of 2% using the +/- keys.
System
Sequence
Probe
AFC
Analyzer
Reports
ImgShift
CEC
Hz Frequency Shift
-10% -----+----- +10%
^
H = 45000.000