Tektronix 2212 User Manual page 227

Performance Tests
k. Adjust the Trigger LEVEL control so that the sweep
starts two divisions above the center horizontal graticule
line and check that the trigger readout is 0.20 V ±0.03 V.
For three divisions it is 0.30 V ± 0.03 V.
1. Adjust the Trigger LEVEL control so that the sweep
starts one division below the center horizontal graticule
line and check that the trigger readout is - 0.10 V ±0.03
V. For two divisions it is - 0.20 V± 0.03 V and for three
divisions - 0.30 V ± 0.03 V.
m. Disconnect the test equipment from the instrument.
Step 8. LINE Trigger Function Check
a. SET:
CH 2 VOLTS/DIV .................... 0.1 V (without l0X probe
attached)
CH 2 AC-GND-DC .................. DC
SEC/DIV ................................... 5 ms
Trigger MODE ......................... P-P AUTO
Trigger SOURCE ...................... LINE
Trigger COUPLING ................. DC
Xl, XlO, X50 Magnify ............. Xl
ALT MAGN switch ................. Off
b. Connect a l0X probe to the CH 2 ORY input connec-
tor.
c. Attach a length of wire of two inches long to the
probe tip. Hold the wire near the middle portion of the
instrument power cord.
d. CHECK - That the display can be triggered on posi-
tive-going and negative-going slopes.
e. Disconnect the test set up from the instrument.
2212 User Manual
C-25