Tektronix 1502C User Manual page 97

Appendix B: Operator Performance Checks
6. Aberrations Check
B–8
If the aberrations are out of specification, the ohms-at-cursor function might be
less accurate than specified.
1. Connect the 50 W precision terminator to the front-panel CABLE connector.
2. Set the DIST/DIV control to 5 ft/div (1 m/div).
3. Increase the VERT SCALE control to 50 mr/div.
n
4. Using the POSITION control, move the top of the pulse to the center
o
graticule line.
ac
O
N
O
F
F
O
F
F
O
F
F
Figure B–10: Top of Pulse on Center Graticule
5. Set the DIST/DIV control to 0.2 ft/div (0.05 m/div).
6. Turn the POSITION control clockwise until the rising edge of the
incident pulse is in the left-most major division on the display.
ac
O
N
O
F
F
O
F
F
O
F
F
Figure B–11: Rising Edge of Incident Pulse in Left-most Major Division
7. Using the POSITION control, move the cursor back to 0.000 ft (0.00 m).
–1.872 ft
1.744 ft
1502C MTDR User Manual