Adjust Frequency Function - Quantum Data 881 User Manual

Adjust Frequency Function

Chapter 2 Testing Video Displays
78
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.
System
Sequence
Probe
AFC
3. Choose AFC by pressing the adjacent item selection key. The following display
appears on the 882's display.
Hz Frequency Shift
-10% -----+----- +10%
^
H = 45000.000
This display enables you to increase or decrease the horizontal frequency parameter
in increments of 2% using the +/- keys.
Reports
ImgShift
Analyzer
CEC