TB 9-6625-2294-24
between leading edge of B sweep time markers (2 peaks) will be as specified in first row of
(50) Repeat technique of steps (47) through (49) above for remaining row listed in
table 18. Division limits for horizontal distance between leading edges of B sweep time
markers will be as specified in table 18. If not, perform b below.
Table 18. Delayed Sweep Delta Time X10 MAG off (TRACK)
Test instrument
Division limits for
horizontal distance
Oscilloscope
between leading edges of
calibrator
B sweep time markers
MARKER
B SWP SEC/DIV
A SWP SEC/DIV
( )
output settings
switch setting
switch settings
S/D
s
1
1
10 ns
3.4
S/D
s
5
5
50 ns
3.4
a. Performance Check
(1) Set A SWP SEC/DIV switch for 50 s (knob in).
(2) Set CH 1 VOLTS/DIV switch to 20 mV.
(3) Press corresponding pushbuttons for indications as listed in (a) through (f) below.
VERTICAL MODE CH 1 on.
(a)
VERTICAL MODE CH 2, CH 3, and CH 4 off.
(b)
CH 1 and CH 2 input coupling pushbuttons for 1 M
DC.
(c)
TRIGGER SOURCE for VERT CH 1.
(d)
t off.
(e)
TRACK/INDEP for INDEP (not illuminated).
(f)
(4) Ensure oscilloscope calibrator SOURCE/MEASURE CHAN 1 is connected to TI
CH 1 using a 50 feedthrough termination.
initially for 120 mV. Rotate knob located below EDIT FIELD pushbutton for 6 divisions of
display on TI.
(6) Sweep oscilloscope calibrator frequency to 350 MHz. TI display will be 3.5
divisions in amplitude or greater throughout sweep; if not, perform b below.
(7) Press TRIGGER SOURCE lower pushbutton to CH 2.
(8) Press VERTICAL MODE CH 1 pushbutton off and CH 2 on.
(9) Set CH 2 VOLTS/DIV switch to 20 mV.