Chapter 4
115
Front-Panel Key Reference
Trig
Trig
The
Trig
key accesses the menu of keys that allow you to select the
sweep mode and trigger mode of the spectrum analyzer.
Free Run
activates the trigger condition that allows the next sweep to start as
soon as possible after the last sweep. Key Access:
Trig
Video
activates the trigger condition that allows the next sweep to start if the
detected RF envelope voltage rises to a level set by the display line.
When
Video
is pressed, the display line appears on the display. The
spectrum analyzer triggers when the input signal exceeds the display
line level at the left edge of the display. Key Access:
Trig
Line
activates the trigger condition that allows the next sweep to be
synchronized with the next cycle of the line voltage. Key Access:
Trig
External
activates the trigger condition that allows the next sweep to start when
positive- going external voltage (connected to
Ext Trig In
on the rear
panel) passes through approximately 1.5 volts. The external trigger
signal must be a 0 V to +5 V TTL signal. Key Access:
Trig
Summary of Contents for ESA-L1500A
Page 12: ...11 1 Preparing for Use and Printing ...
Page 28: ...27 2 Getting Started ...
Page 47: ...46 Chapter2 Getting Started Analyzer Battery Information ...
Page 48: ...47 3 Troubleshooting ...
Page 54: ...Chapter 3 53 Troubleshooting How to Return Your Analyzer for Service Figure 3 1 ...
Page 117: ...116 Chapter4 Front Panel Key Reference Trig ...
Page 118: ...117 5 Menu Maps ...
Page 119: ...118 Chapter5 Menu Maps ...
Page 120: ...Chapter 5 119 Menu Maps ...
Page 121: ...120 Chapter5 Menu Maps ...
Page 122: ...Chapter 5 121 Menu Maps ...
Page 124: ...Chapter 5 123 Menu Maps ...
Page 125: ...124 Chapter5 Menu Maps ...
Page 128: ...Chapter 5 127 Menu Maps ...
Page 129: ...128 Chapter5 Menu Maps ...
Page 130: ...Chapter 5 129 Menu Maps ...
Page 131: ...130 Chapter5 Menu Maps ...
Page 135: ...134 Chapter5 Menu Maps ...
Page 136: ...135 6 Options and Accessories ...
Page 145: ...144 Chapter6 Options and Accessories Accessories ...
Page 146: ...145 7 Specifications ...
Page 179: ...178 Chapter7 Specifications Regulatory Information ...
Page 180: ...179 8 Required Equipment ...
Page 187: ...186 Chapter8 Required Equipment Test Equipment ...
Page 308: ...307 10 Performance Verification Test Record ...