TB 9-6625-2283-35
9. Zero
Distance Reference
a. Performance Check
(1) Perform (a) through (f) below:
(a)
Set POWER switch to ON.
(b)
Press FILTER (FAST) pushbutton.
(c)
Press PULSE (LONG) pushbutton.
(d)
Press VERTICAL SCALE pushbutton to 5 dB/DIV.
(e)
Set DIST/DIV switch to 1.
(f)
Press SWEEP pushbutton.
(2) Adjust ↑ ↓ POSITION control to set the top of the pulse 1 major division above
the center graticule line.
(3) If the rising edge does not cross the horizontal center graticule line within 0.5
division of marker (if not within +25 feet), perform b below.
b. Adjustments
(1) Perform (a) through (f) below:
(a)
Set POWER switch to OFF position.
(b)
Set POWER switch ON.
(c)
Press PULSE (SHORT) pushbutton.
(d)
Press FILTER (SLOW) pushbutton.
(e)
Press READOUT MODE (LOSS, DIST) pushbutton to DIST position.
(f)
Press VERTICAL MODE pushbutton to 5 dB/DIV position.
(2) Press FILTER (FAST) pushbutton.