Tektronix 7B92A Maintenance Manual page 90

i. Repeat parts d, e, and f of this step.
j. Set the TIME/DIV OR DLY TIME switch to 10
ns, DLY'D Time/Division switch (pull knob out) to 1 ns
(then push knob in), and adjust the MAIN TRIGGERING
LEVEL control for a stable display (TRIG'D light on).
k. Set the time-mark generator for 10 ns markers.
I. Repeat parts d, e, and f of this step. Delete
check at DELAY TIME MULT dial setting of 1.0.
C 17. Check Delay Jitter
a. Set the TIME/DIV OR DLY TIME switch to 1
ms, DLY'D Time/Division switch (pull knob out) to 5 ns
(then push knob in), and adjust the MAIN TRIGGERING
LEVEL control for a stable display (TRIG'D light on).
b. Set the time-mark generator for 1 ms markers.
c. Set the DELAY
approximately 1.0 (position the time-mark to the center
of the graticule).
d. Set the DLY'D Time/Division switch to 0.2 us.
e. Turn the DELAY TIME MULT dial slowly to
position the time-mark near the graticule center (turn up
INTENSITY control as necessary).
TIME MULT dial to
Performance Check/Calibration-7B92A
f. Check-jitter must not exceed one division
(disregard slow drift).
g. Set the TIME/DIV OR DLY TIME switch to 20
us, DLY'D Time/Division switch (pull knob out) to 50 ns
(then push knob in), and adjust the MAIN TRIGGERING
LEVEL control for a stable display (TRIG'D light on).
h. Set the time-mark generator for 50 ns markers.
i. Set the DLY'D Time/Division switch to 5 ns.
j. Turn the DELAY TIME MULT dial slowly to
position the time-mark near the graticule center (turn up
INTENSITY control as necessary).
k. Check-jitter must not exceed 0.9 division.
I. Turn the
approximately 9.0 and position the time-mark to the
center of the graticule.
m. Check-jitter must not exceed 0.9 division.
This completes the Calibration procedure of the 7B92A.
5-40
DELAY TIME MULT dial to