6002 Output - HP 211B Operating And Service Manual

Section V
Paragraph 5-13 to 5-17
GR874 -W50
410221A
50Q TEE
2118
TRIG. SOQ
Figure 5-3. 50 Output Pulse Check
5-13. 502 OUTPUT
5-14. Pulse Amplitude
a. Refer to Figure 5-3 and connect required equip-
ment.
b. Set Model 211B controls as follows:
MULTIPLIER............... 1M
FREQUENCY DIAL......... 1
SYMMETRY..........0c cee 50% duty cycle
AMPLITUDE (v across 502). .5
VERNIER........cceseeeceee CCW
TRIGGER POLARITY........ negative
c. Set Sampling Oscilloscope controls and plug-in
as follows:
TIME SCALE........-000006 200ns/cm
VERNIER,.... ccc ececceees CAL
TIME SCALE MAGNIFIER... X1
TRIGGERING. ........002 eee normal
TRIGGER SLOPE........... negative
MODE AND STABILITY...... for stable trace
CHANNEL SELECTOR....... channel A
SENSITIVITY. .........0..00- 50mV/cm
VERNIER..........eeceee CAL
RESPONSE........eccceceee normal
d. The oscilloscope display should be no more
than 4 cm (2 V)in amplitude. ]}f 4 cm or less is
observed the ratio between CW and CCW is at least
2.5 to 1. Therefore at a 0.05 V pulse amplitude
setting the minimum of 0.025 V output can be
obtained.
5-15. Pulse shape
a. Set Oscilloscope TIME SCALE to 20ns/cm.
b. Set Model 211B FREQUENCY dial to 5, set
AMPLITUDE (V across 502) switch to 5 and adjust
VERNIER for a pulse amplitude of 5 V (10cm).
c. Change the time scale MAGNIFIER to X20.
Move the leading edge of the pulse to the center of the
graticule,
5-4
Model 211B
f. The following leading edge characteristics
should be observed.
Rise Time 10% to 90%. . . No more than 5 cm (5ns)
Preshoot.............. No more than 5 mm (5%)
Overshoot and Ringing. . No more than 5 mm peak
(5%)
g. Adjust Oscilloscope DELAY control for display
of pulse trailing edge.
h. The following trailing edge characteristics
should be observed
Fall Time 10% to 90%...Nomore than 5 ¢m (5ns)
Preshoot.............. No more than 5 mm (5%)
Overshoot and Ringing.. No more than 5mm peak
; (5%)
5-16. 6002 OUTPUT
5-17. Pulse Amplitude
a. Refer to Figure 5-4 and connect required equip-
ment.
b. Set Model 211B controls as follows:
MULTIPLIER..........-+445 10K
FREQUENCY DIAL.......... 10
SYMMETRY.............26- 50% duty cycle
AMPLITUDE - 6002......... CW
c. Set High Frequency Oscilloscope and plug-in' s
as follows:
SWEEP TIME.............4- 2us/em
VERNIER........0cceeeee CAL
HORIZONTAL DISPLAY...... X1
VERNIER.......0000ceeees CAL
TRIGGER SOURCE.......... internal
TRIGGER SLOPE........... negative
CHANNEL SELECTOR....... channel A
SENSITIVITY. ...........006. 1 V/em - de
VERNIER.........2000000. CAL
POLARITY.............000- positive
SWEEP SELECTOR......... main
10003 B
Figure 5-4. 6002 Output Pulse Check