29. Check X Gain
a. Set TRIG MODE to AUTO, set DLY’D SWP to lock
knobs, set TIME/DIV to X-Y, set VERT MODE to CH 2 and
set X (CH 1) VOLTS/DIV to 5 mV.
b. Set amplitude calibrator to 20 millivolts and con-
nect to X (CH 1) input through a 42-inch 50-ohm BNC
cable.
c. Set X (CH 1) and Y (CH 2) POSITION controls to set
the 2-dot display at graticule center.
d. CHECK—The deflection between the 2 displayed
dots for 4 divisions within 3%.
e. Disconnect all test equipment.
TM 11-6625-2735-14-1
30. Check X Bandwidth
NOTE
See test equipment required, Table 5-1, for selection
of sine-wave generator
with an output of
100 megahertz and below.
a. Connect the sine-wave generator output cable to a
50-ohm termination, to X input.
b. Set the sine-wave generator for a 4 division horizon-
tal display of reference frequency.
c. Increase the frequency of the sine-wave generator
until the display is reduced to 2.8 divisions.
d. CHECK—The sine-wave generator for a reading of
3 megahertz or higher.
e. Disconnect all test equipment.
GATE OUTPUTS, EXTERNAL Z-AXIS AND
CALIBRATOR CHECKS
Equipment Required
3. 50-Ohm BNC Termination
1. Amplitude Calibrator
2. 42-inch 50-ohm BNC Cable (2 required)
4. 10X Probe (see Table 5-1, 10X Probe examples)
Trigger (A and B)
Control Settings
COUPLING
AC
POWER
ON
LEVEL
Fully clockwise
(new setting)
SLOPE
+
Display
A TRIGGER SOURCE
NORM
INTENSITY
FOCUS
SCALE ILLUM
Vertical (CH 1
POSITION
VOLTS/DIV
VAR VOLTS/DIV
AC-GND-DC
INVERT
VERT MODE
100 OR 20 MHz BW
Midrange
Midrange
Midrange
and CH 2)
Midrange
2 V (new setting)
Calibrated detent
DC
Off (button out)
CH 1 (new setting)
20 (new setting)
B TRIGGER SOURCE
STARTS AFTER DELAY
TRIG MODE
AUTO
A TRIG HOLDOFF
NORM
Sweep
A TIME/DIV
B TIME/DIV
VAR TIME/DIV
DELAY TIME POSITION
HORIZ DISPLAY
X10 MAG
POSITION (Horiz)
FINE
10 (new setting)
10 (new setting)
Calibrated detent
Fully counterclockwise
A INTEN (new setting)
Off (button out)
Midrange
Midrange
5-19
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