TB 9-6625-2294-24
Table 15. Delta Time Display
Test instrument
t readout
t readout
indication limits
indications
Min
Max
(ns)
(ns)
(ns)
-10.0
-9.86
-10.14
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
(35) Perform steps (a) though (e) below:
Set A SWP SEC/DIV switch to 20 ns.
(a)
Set B SWP SEC/DIV switch to 5 ns (knob out).
(b)
Ensure X10 MAG pushbutton is on.
(c)
Ensure t pushbutton is off for DLY readout.
(d)
Set oscilloscope calibrator MARKER output to 20 nS/D.
(e)
(36) Adjust REF OR DLY POS control for DLY readout of 21.25 ns and horizontal
POSITION control to position leading edge of 2d time marker near graticule center.
NOTE
Adjust intensity control as required to assist in locating start of
1st time marker.
(37) Set oscilloscope calibrator MARKER output as listed in first row of table 16.
t pushbutton to obtain a
t display and push SEC/DIV knob in for B
(38) Press
SWP only.
(39) Initially adjust control for a t readout indication as listed in first row of table
16 and then superimpose the two time markers. t readout indication will be within limits
specified in first row of table 16. If not, perform b below.
(40) Repeat technique of (39) above for remaining t readout indications listed in
b below.
Table 16. Delta Time Display X10 MAG on and DLY Initially at 21.25 ns
Test instrument
t readout
calibrator
Test instrument
t readout
MARKER
limits
output
indications
Min
Max
settings
(ns)
(ns)
(ns)
5 nS/D
-20.00
-19.75
-20.25
5 nS/D
20.00
19.75
20.25
5 nS/D
160.00
159.30
160.70
20