TB 9-6625-2293-35
Oscilloscope calibrator frequency will be 300 MHz or greater.
b.
Adjustments. Refer to
SECTION IV paragraph 22 below.
a. Performance Check
(1) Press corresponding pushbuttons for indications as listed in (a) and (b) below:
(a) VERTICAL MODE CH 1 on and VERTICAL MODE CH 2, CH 3,
and CH 4 off.
(b) CH 1 input coupling switch up to 1 M Ω DC.
(2) Set CH 1 VOLTS/DIV switch to 100 mV, and VAR controls fully cw to detent.
(3) Set A SWP and B SWP SEC/DIV switch to 1 ms (knobs locked) and SEC/DIV
VAR control fully cw to detent.
(4) Position TRIGGER HOLDOFF control to B ENDS A fully cw to detent.
(5) Connect TI CH 1 to TI CALIBRATOR terminal and adjust CH 1 VERTICAL
POSITION control as necessary to view signal.
(6) Adjust TI CH 1 VOLTS/DIV VAR control for 4 divisions of vertical deflection on
TI (do not change setting).
(7) Move connection at TI calibrator to oscilloscope calibrator CHAN 1.
(8) Set oscilloscope calibrator for a CHAN 1, VOLTAGE mode output of 400 mV at
1 kHz frequency.
(9) Adjust TI A TRIGGER LEVEL, CH 1 ⇕POSITION and ⇦POSITION⇨
(10) Rotate oscilloscope calibrator knob below EDIT field pushbutton to adjust
waveform to 4 divisions of vertical deflection on TI. If oscilloscope calibrator err display is
not within 1 percent, perform b below.
b. Adjustments. Refer to SECTION IV below.
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA label/form in accordance with TB 750- 25.
15. Preliminary
Instructions
a. The
procedures in
paragraph 17 through 22 should be
performed only if an
out-of-
tolerance condition exists in paragraphs 8 through 13 or if an error message on the bottom
line of the crt display is TEST 04 xx, where xx is 01, 02, 10, or 11 when POWER
pushbutton is pressed to ON.