TB 9-6625-2295-35
(28) Adjust ∆ control for a ∆t readout indication near -10.00 ns to superimpose the
two time markers. If ∆t readout indication is not within limits specified in first row of table
(29) Repeat technique of (28) above for ∆t readout indications listed in table 17. If ∆t
readout indications are not within specified limits in table 17 with the two time markers
superimposed, perform b below.
Test instrument
∆t readout
∆t readout indications limits
indications (ns)
Min (ns)
Max (ns)
-10.00
-10.32
-9.68
0.0
0.30
-0.30
10
9.68
10.32
20
19.64
20.36
30
29.62
30.38
40
39.58
40.42
50
49.56
50.44
60
59.52
60.48
70
69.50
70.50
80
79.46
80.54
(30) Set A SWP SEC/DIV switch to 20 ns and B SWP SEC/DIV switch to 5 ns
(knob out).
(31) Press X10 MAG pushbutton on and ∆t pushbutton off for DLY readout.
(32) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of 20 ns.
(33) Adjust ∆REF OR DLY POS control for DLY readout of 21.25 ns and
⇦POSITION⇨ control to position leading edge of 2d time marker near graticule center.
(34) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of 5 ns.
(35) Press ∆t pushbutton to obtain a ∆t display and push in SEC/DIV knob for B
SWP only.
(36) Adjust ∆ control for a ∆t readout indication near -20.00 ns to superimpose the
two time markers. If ∆t readout indication is not within limits specified in first row of table
(37) Repeat technique of (36) above for ∆t readout indications listed in table 18. If ∆t
readout indications are not within specified limits in table 18 with the two time markers
superimposed, perform b below.
Test instrument
∆t readout
∆t readout indications limits
indications (ns)
Min (ns)
Max (ns)
-20.00
-20.45
-19.55
20.00
19.55
20.45
160.00
159.15
160.85
18
