Tektronix 2337 Instruction Manual page 41

display starts on the positive-going slope of the applied
5. Select the A TRIGGER NORM mode.
6. Rotate the A TRIGGER LEVEL control between
its maximum clockwise and counterclockwise positions.
Observe that the display is presented when correctly
triggered.
7. Set the A TRIGGER COUPLING switch to DC and
the A TRIGGER SGURCE switch to VERT MODE.
8. Rotate the Channel 1 POSITION control until the
display becomes unstable. Note that changing the vertical
POSITION control setting affects the dc trigger level with
the A TRIGGER SOURCE switch set to VERT MODE.
9. Adjust the Channel 1 POSITION control to center
10. Set the A TRIGGER COUPLING switch to AC and
the A TRIGGER SOURCE switch to CH 1.
11. Remove the calibration signal from the CH 1 input
connector.
12. Press in the A TRIGGER SGL SWP push button
momentarily for single-sweep operation.
13. Observe that the TRIG'D-READY light illuminates,
indicating that the A trigger circuit is armed (READY)
for a single-sweep display. No display should be present
'on the crt screen.
14. Reconnect the calibration signal to the CH 1 input
connector. A single sweep of the applied signal should
appear on the screen. When the TRIG'D-READY light is
out, another single sweep cannot be displayed until the
SGL SWP button is pressed in again to reset the A Trigger
15. Select the A TRIGGER AUTO mode and set the
A TRIGGER SOURCE switch to EXT.
16. Remove the calibration signal from the CH 2 input
connector and connect it to the A EXT input connector.
32 2337 Operators @