HP 120A - Page 21

Sect. II Page 5
£
INTERNAL SWEEP — INTERNAL SYNCHRONIZATION
1. Feed vertical input signal to vertical INPUT
terminals. Remove jumper to use balanced
input (10 mv only).
2. Set AC-DC switch for type coupling desired
(balanced ac coupling, see Figure 2-5).
3. Adjust VERTICAL SENSITIVITY control for
desired sensitivity.
Figure
4. Set SYNCHRONIZATION switch to INTERNAL
(+ of -), depending upon slope of trigger point
desired (see Figure 2-2).
5. Adjust SWEEP TIME-HORIZONTAL SENSI 
TIVITY control for desired sweep speed.
6. If AUTOMATIC sweep is not desired, rotate
TRIGGER LEVEL control to select level of
trigger point.
2-3