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Operator Tutorial
1502C MTDR User Manual
2–13
Set Ref (Delta Mode)
Horizontal Set Reference establishes the starting point at which the distance
window begins reading the distance to the cursor. If, for example, you have a
3-foot cable leading to a patch panel, you could eliminate this jumper from your
distance readings.
1. Set the 1502C front-panel controls to:
CABLE Attach 3-ft cable
NOISE FILTER 1 avg
VERT SCALE 500 mr (default)
DIST/DIV 1 ft/div (0.25 m)
NOTE. If the POWER was left on from the previous step, return the distance
window reading to 0.000 ft with the
n
o
POSITION control.
O
F
F
O
F
F
O
F
F
O
N
ac 0.000 ft
move cursor to reference and Press STORE
Figure 2–17: Incident and Reflected Pulses with Cursor at 0.00 ft
2. Turn the NOISE FILTER control counterclockwise to HORZ SET REF. The
noise filter reading on the LCD will indicate set D.
3. Adjust the
n
o
POSITION control so the cursor is on the rising edge of the
reflected pulse. In this case, the distance window should read 3.000 ft.
4. Press STORE.
HORZ SET REF