TB 9-6625-2293-24
(44) Adjust Δ control for a Δt readout indication near -10.00 ns to superimpose the
two time markers. If Δt readout indication is not within limits specified in first row of table
11, perform b below.
(45) Repeat technique of (44) above for remaining Δt readout indications listed in
time markers superimposed, perform b below.
Table 11. Delta Time Display
Test instrument
Δt readout
Δt readout indication limits
indications
(ns)
(ns)
Min
Max
-10
- 10.14
- 9.86
0.0
-0.10
0.10
10
9.86
10.14
20
19.84
20.16
30
29.80
30.20
40
39.78
40.22
50
49.74
50.26
60
59.72
60.28
70
69.68
70.32
80
79.66
80.34
(46) Press Xl0 pushbutton to off. Set A SWP SEC/DIV switch to 20 ns and B SWP
SEC/DIV switch to 5 ns (knob out).
(47) Press X10 MAG pushbutton on and Δt pushbutton off for DLY readout.
(48) Change oscilloscope calibrator MARKER mode output to 20 nS/D.
(49) Adjust ΔREF OR DLY POS control for DLY 21.25 ns and horizontal
POSITION control to position leading edge of 2d time marker near graticule center.
(50) Change oscilloscope calibrator MARKER mode output to 5 nS/D.
(51) Press Δt pushbutton to obtain a Δt display and push in SEC/DIV knob for B
SWP only.
(52) Adjust Δ control for a Δt readout indication near -20.00 ns to superimpose the
two time markers. If Δt readout indication is not between -19.75 ns and -20.25 ns with the
two time markers superimposed, perform b below.
(53) Adjust Δ control for a Δt readout indication near 20.00 ns to superimpose the
two time markers. If Δt readout indication is not between 19.75 ns and 20.25 ns with the
two time markers superimposed, perform b below.
(54) Adjust Δ control for a Δt readout indication near 160.00 ns to superimpose the
two time markers. If Δt readout indication is not between 159.30 ns and 160.70 ns with
the two time markers superimposed, perform b below.
(55) Press X10 MAG pushbutton to off. Set A SEC/DIV switch to 50 ns and B SEC/
DIV switch to 5 ns (knob out).
(56) Press X10 MAG pushbutton on and Δt pushbutton off for DLY readout.
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