TB 9-4931-504-50
Figure 1. Test instrument -
right -side view.
11. Positive and
Negative Balance
a. Performance Check
(1) Position controls as listed in (a) through (e) below:
(a) CH2 VOLTS/DIV switch to 50 mV.
(b) DELAYING SWEEP and DELAYED SWEEP SEC/DIV switches to 1 S.
(c) HF SYNC pushbutton released.
(d) INT CH1 pushbutton released.
(e) REP pushbutton pressed.
(2) Connect test oscillator (A7) to CH1 input and EXT INPUT, using adapter and
cable (B1 and B4).
(4) Adjust TRIGGERING LEVEL control for stable display. If stable display
cannot be obtained, perform b below.
(5) Press AUTO TRIG pushbutton and adjust TRIGGERING LEVEL CONTROL
for stable display.
(6) Press and release +SLOPE pushbutton. Display will remain stable while
triggering on positive and negative slope of waveform.