TB 9-6625-2293-24
(7) TRIGGER HOLDOFF fully ccw to MIN.
(8) TRACE SEP fully cw.
(9) SCALE ILLUM fully ccw.
(10) INTENSITY, FOCUS, and READOUT INTENSITY for suitable viewing.
f. Press VERTICAL MODE CH 2 pushbutton to off (out).
8. Low Frequency Response
a. Performance Check
(1) Connect oscilloscope calibrator SOURCE/MEASURE CHAN 1 to TI CH 1 and
oscilloscope calibrator SOURCE/MEASURE CHAN 2 to TI CH 2.
(2) Set oscilloscope calibrator for a CHAN 1, WAVE GEN sine mode output of
50 kHz and adjust amplitude for 6 divisions of vertical display on TI.
NOTE
Set A SWP SEC/DIV switch as necessary to view signal.
NOTE
To perform step below, press oscilloscope calibrator EDIT
FIELD pushbutton as required to place underline under one of
the frequency digits.
(3) Decrease oscilloscope calibrator frequency until display is 4.2 divisions.
If
oscilloscope calibrator frequency is not 10 Hz or less perform b below.
(4) Press TI VERTICAL MODE CH 1 pushbutton off and VERTICAL MODE CH
2 pushbutton on and change oscilloscope calibrator output from CHAN 1 to CHAN 2.
(5) Repeat technique of (2) and (3) above for CH 2.
(6) Disconnect equipment setup.
b. Adjustments. Perform SECTION IV below.
9. Vertical Gain
a. Performance Check
(1) Press VERTICAL MODE CH 1 pushbutton on and VERTICAL MODE CH 2,
3, and 4 pushbuttons to off.
(2) Press 20 MHz BW LIMIT pushbutton on.
(3) Set CH 1 and CH 2 input coupling switches down to 1 M Ω DC.
(4) Set A SWP SEC/DIV switch to 1 ms.
(5) Set CH 1 VOLTS/DIV switch to 2 mV.
(6) Push up and momentarily hold both CH 1 and CH 2 input coupling switches in
their 1 M Ω AC position until a moving dot display replaces the normal signal and readout
displays DC BALANCE IN PROGRESS. This performs a dc balance of CH 1 and CH 2.
