TB 9-6625-2132-35
(b) -AC-GND-DC pushbutton to GND.
(c) LF -3dB POINT switch to DC.
(d) HF -3dB POINT switch to 1 MHz.
(3) Set time base TRIGGERING SOURCE pushbutton to INT.
(4) Adjust function/arbitrary generator frequency to 1 kHz and amplitude for 6
divisions of vertical deflection on oscilloscope.
(5) Increase function/arbitrary generator frequency until the Oscilloscope CRT
indicate between 0.9 and 1.1 MHz, perform b below.
(6) Repeat technique of (5) above for HF and LF-3dB switch settings and
indications listed in table 10.
(located on right side of TI) for 4.2 divisions of vertical deflection on oscilloscope (R).
Test instrument
Function/arbitrary
HF And LF
generator frequency limits
-3db POINT
switch settings
Min
Max
.3 MHz
270 kHz
330 kHz
.1 MHz
90 kHz
110 kHz
30 kHz
27 kHz
33 kHz
10 kHz
9 kHz
11 kHz
3 kHz
2.7 kHz
3.3 kHz
.3 kHz
270 Hz
330 Hz
.1 kHz1
90 Hz
110 Hz
10 Hz2
8.8 Hz
11.2 Hz
.1 kHz
88 Hz
112 Hz
1 kHz
880 Hz
1120 Hz
10 kHz
8.8 kHz
11.2 kHz
1Return
HF-3dB POINT switch is left at 1 MHz position
2Starts
LF-3dB POINT switch positions.
19. Final Procedure
a. Deenergize and disconnect all equipment and reinstall protective cover on TI.
b. Annotate and affix DA label/form in accordance with TB 750-25.
