TB 9-6625-2309-35
(6) Press DISPLAY FROM pushbutton as required to select A.
(7) Press HOR EXP pushbutton as required to display 4.0 m/div on crt.
(8) Adjust CURSOR A control to carefully adjust cursor A to beginning of reflective
0 km
4 km
8 km
A
974. 0
982. 0
990. 0
↑ 8. 0 dB / div
4. 0 m / div →
A = 982. 0 m
INDEX: 1. 4990
B = 4, 927. 9 m
λ: 850 MM
PW:
40 ns
A→B = 3, 945. 9 m
# AVG = 4, 096. 0
2-POINT LOSS: 14. 50 dB
Figure 20. Placement of
cursor A to
get reference position (TD-260C).
(9) Record A= distance in meters displayed on crt.
NOTE
Take care not to move cursor A from this reference position. If
cursor A is moved, reference position must be reestablished.
d. Remove fiber test box from test setup and connect equipment as shown in
38