Performance Verification
1780R-Series Service Manual
4–9
51. Check Vector Display Clamp Stability and Position Range
52. Check Vector Display Variable Gain Range
53. Check Variable Gain Phase Shift
54. Check X and Y Input Phase Matching
55. Check X Y Frequency Response
56. Check SCH Phase Accuracy
57. Check WFM Trace Rotation and Orthogonality
58. Check Return Loss