Tabor Electronics 5251, User Manual, Page: 8 / 298

Contents (continued)
v
3D Modulation Programming ......................................................................................... 4-61
PSK Modulation Programming ...................................................................................... 4-63
Run Mode Commands ..................................................................................................... 4-66
Auxiliary Commands ........................................................................................................ 4-72
Digital Pulse Programming ............................................................................................ 4-73
Counter/Timer Programming ......................................................................................... 4-78
Half Cycle Programming ................................................................................................ 4-81
System Commands ....................................................................................................... 4-83
IEEE-STD-488.2 Common Commands and Queries ....................................................... 4-85
Error Messages ............................................................................................................... 4-85
5
Performance Checks ........................................................................................................ 5-1
What’s in This Chapter ........................................................................................................ 5-3
Performance Checks .......................................................................................................... 5-3
Environmental Conditions ................................................................................................... 5-3
Warm-up Period .................................................................................................................. 5-4
Initial Instrument Setting ...................................................................................................... 5-4
Recommended Test Equipment .......................................................................................... 5-4
Test Procedures.................................................................................................................. 5-4
Frequency Accuracy ........................................................................................................ 5-5
Frequency Accuracy, Internal Reference ......................................................................... 5-5
Frequency Accuracy, External 10MHz Reference ............................................................... 5-5
Amplitude Accuracy ............................................................................................................ 5-6
Amplitude Accuracy, DAC Output .................................................................................... 5-6
Amplitude Accuracy, DDS Output .................................................................................... 5-6
Offset Accuracy................................................................................................................... 5-7
Offset Accuracy, DAC Output .......................................................................................... 5-7
Offset Accuracy, DDS Output .......................................................................................... 5-8
Squarewave Characteristics ............................................................................................... 5-9
Squarewave Checks ....................................................................................................... 5-9
Sinewave Characteristics .................................................................................................... 5-9
Sinewave Distortion, DAC Output .................................................................................... 5-9
Sinewave Spectral Purity, DAC Output ............................................................................ 5-10
Sinewave Spectral Purity, DDS Output ............................................................................ 5-11
Sinewave Flatness, DAC Output ..................................................................................... 5-11
Sinewave Flatness, DDS Output ..................................................................................... 5-12
Trigger operation Characteristics ........................................................................................ 5-12
Trigger, Gate, and Burst Characteristics .......................................................................... 5-13
Mixed Trigger Advance Test ............................................................................................ 5-13