TB 9-6625-2295-35
(38) Set A SWP SEC/DIV switch to 50 ns and B SWP SEC/DIV switch to 5 ns
(knob out).
(39) Press X10 MAG pushbutton on and ∆t pushbutton off for DLY readout.
(40) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of 50 ns.
(41) Adjust ∆ REF OR DLY POS control for DLY 53.2 ns and ⇦POSITION⇨
control to position leading edge of 2d time marker near graticule center.
(42) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of 5 ns.
(43) Press ∆t pushbutton to obtain a ∆t display and push in SEC/DIV knob for B
SWP only.
(44) Adjust ∆ control for a ∆t readout indication near -50.0 ns to superimpose the two
time markers. If ∆t readout indication is not within limits specified in first row of table 19
with the two time markers superimposed, perform b below.
(45) Repeat technique of (44) above for ∆t readout indications listed in table 19. If ∆t
readout indications are not within specified limits in table 19 with the two time markers
superimposed, perform b below.
Test instrument
∆t readout
∆t readout indications limits
indications (ns)
Min (ns)
Max (ns)
-50.00
-50.80
-49.20
50.00
49.20
50.80
400.00
398.10
401.90
(46) Press TRACK/INDEP pushbutton for TRACK.
(47) Set A SWP SEC/DIV switch to 100 ns and set B SWP SEC/DIV switch to 10
ns (knob out).
(48) Press Xl0 MAG pushbutton on.
(49) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of .1 s.
(50) Adjust ∆ REF OR DLY POS controls for a ∆t readout of 800.0 ns (8 times A
SWP SEC/DIV setting).
(51) Adjust ⇦POSITION⇨ control to align leading edge of 2d time marker on A
sweep with 2d vertical graticule line.
(52) Adjust TRACE SEP control ccw to separate traces.
(53) Adjust ∆ REF OR DLY POS control to intensify 2d and 10th time markers on A
sweep and display leading edges of displayed B sweep time markers in center area of
graticule.
(54) If B sweep time marker leading edges are not 3.4 divisions or less apart, perform
b below.
(55) Set A SWP SEC/DIV switch to 200 ns and set B SWP SEC/DIV switch to 20
ns (knob out).
19
