TB 9-6625-2295-24
(19) Reduce all outputs to minimum.
(20) Press corresponding pushbuttons for indications as listed in (a) through (f) below:
(a) VERTICAL MODE CH 1 off and CH 2 on.
(b) TRIGGER SOURCE to CH 2.
(c) TRIGGER COUPLING to AC.
(d) CH 2 switch to 100mV.
(e) X10 MAG to off.
(f) SEC/DIV switch to 50 Ps.
(21) Set oscilloscope calibrator for a CHAN 2, LEVEL SINE mode output of 50 kHz
and adjust output amplitude for 0.35 division of display on TI.
(22) Adjust TRIGGER LEVEL control for a stable display at all settings listed in
table 13. If a stable display cannot be obtained, perform b below.
NOTE
Set A SWP SEC/DIV switch and press X10 MAG pushbutton
as necessary to obtain a well-defined display of test signal.
Table 13. Channel 2 Trigger Level Frequency Response Stability
Test instrument
Test instrument
trigger coupling
divisions of display
50
kHz
AC
0.35
50
MHz
AC
0.35
50
MHz
DC
0.35
300
MHz
DC
1
300
MHz
AC
1
500
MHz
AC
1.5
500
MHz
DC
1.5
(23) Reduce all outputs to minimum.
b. Adjustments. Perform Section IV below.
10. Timing
a. Performance Check
(1) Press corresponding pushbuttons for indications as listed in (a) through (c) below:
(a) VERTICAL MODE CH1 on and CH2, CH3, and CH 4 off.
(b) TRIGGER MODE to AUTO LVL and TRIGGER SOURCE to VERT CH 1.
(c) Xl0 MAG off.
(2) Set A SWP SEC/DIV switch to 5 ns (knobs locked).
(3) Set oscilloscope calibrator for a CHAN 1, MARKER mode output of 5 ns.
(4) Set CH 1 VOLTS/DIV switch for approximately 2 to 3 divisions of display.
(5) Adjust TRIGGER LEVEL control for a stable display.