TM 11-6625-2735-14-1
TRIGGER SYSTEM CHECK
Equipment Required
8. GR-To-BNC Male Adapter
1.
2.
3.
4.
5.
6.
7.
Sine-Wave Generator
9. BNC Female-To-BNC Female Adapter
Low-Frequency Generator
10. BNC Elbow
Amplitude Calibrator
11. BNC T-Connector
50-Ohm Signal Pickoff
42-inch 50-Ohm BNC Cable
12. 10X BNC Attenuator
18-inch 50-Ohm BNC Cable (2 required)
13. 5X BNC Attenuator
GR-To-BNC Female Adapter
14. 50-Ohm BNC Termination (2 required)
Control Settings
POWER
ON
Display
INTENSITY
Midrange
FOCUS
Midrange
SCALE ILLUM
Midrange
Vertical (CH 1 and CH 2)
POSITION
Midrange
VOLTS/DIV
5 mV
VAR VOLTS/DIV Calibrated detent
AC-GND-DC
DC
INVERT
Off (button out)
VERT MODE
CH 1
100 OR 20 MHz BW
Full bandwidth (push in,
then release)
Trigger (A and B)
COUPLING
AC
LEVEL
0
SLOPE
+
A TRIGGER SOURCE
NORM
B TRIGGER SOURCE
NORM (new setting)
TRIG MODE
AUTO
A TRIGGER HOLDOFF
NORM
Sweep
A TIME/DIV
50 (new setting)
B TIME/DIV
50 (new setting)
VAR TIME/DIV
Calibrated detent
DELAY TIME POSITION
Fully counterclockwise
HORIZ DISPLAY
A
X10 MAG
Off (button out)
POSITION (Horiz)
Midrange
FINE
Midrange
11. Check A Low-Frequency Triggering
a. Connect the low-frequency generator output to a
42-inch 50-ohm BNC cable, to a BNC female-to-BNC
female adapter, to a BNC T-connector, to two 18-inch 50-
ohm BNC cables, to CH 1 input and A TRIGGER external
input.
b. Set the low-frequency generator for a 5 division,
50 kilohertz display, then set CH 1 VOLTS/DIV to 50 mV.
c. CHECK—That a stable triggered display can be
obtained in AC, LF REJ, HF REJ and DC positions of A
TRIGGER COUPLING with adjustment of A TRIGGER
LEVEL.
d. Set CH 1 VOLTS/DIV to 5 mV.
e. Set the low-frequency generator for a 3 division,
50 kilohertz display, then set CH 1 VOLTS/DIV to 50 mv.
5-9
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