Check Width A: Range G 4 Ns; Check Events B Dur A; Check Delay Mismatch: Int. G 2 Ns; Check Minimum Time B - Tektronix DC 5010 Anleitung

Calibration-DC
SO 10
Performance Check Procedure
14. Check Width A: Range = ~ 4 ns; Minimum Time
Stop Edge To Start Edge, ~ 8 . 5 ns
Refer to Fig. 4-3 (using sinewave generator only), perfor-
mance check setup. Use the following control settings.
Sinewave Generator
Frequency 50 MHz
Output Amplitude 2.5 V p-p
Amplitude Multiplier X I
DC 5010
CHANNEL A and B
ATTEN X l (lighted)
TERM 50 Q (lighted)
FREQ A (lighted)
a. Connect a coaxial cable from the sinewave generator
output to the DC 5010 CHANNEL A input. Do not use the
attenuator shown in Fig. 4-3.
b. Press to light the LEVEL CH A button, and use
f
(in-
crement) to set the CH A trigger level to .920 volts.
c. Press to light the DC 501 0 WIDTH A button.
d. CHECK-that the DC 501 0 display readout indicates
between 2.000 and 6.000 (ns).
Time A
+
B
CHANNEL A and
CHANNEL B
ATTEN
TERM
SLOPE
DC 5010
(lighted)
X I (lighted)
50 Q (lighted)
+
(unlighted)
EVENTS B DUR A check:
a. Connect a coaxial cable from the pulse generator out-
put to one connector of a 50 Q power divider (using the GR-
to-bnc adapter).
b. Connect an 18-inch coaxial cable from another power
divider connector to the DC 501 0 CHANNEL A input (using
the GR-to-bnc adapter).
NOTE
In this and other steps calling for exact lengths, it is
important to use the lengths called for.
c. Connect a 42-inch coaxial cable from the other power
divider connector to the DC 5010 CHANNEL B input (using
the GR-to-bnc adapter).
d. Press the DC 501 0 AUTO TRIG button, then press to
light the NULL button.
e. Press the DC 5010 CHANNEL
B
-
SLOPE button
(lighted).
15. Check EVENTS B DUR A Minimum Pulse
f. Adjust the pulse generator Duration Variable control
until the DC 501 0 display readout indicates between 3.95 ns
Width, ~ 4 . 0 ns and ~ 8 . 5 ns
and 4.05 ns.
Check Delay Mismatch: Int, G 2 ns
Check Minimum TIME B
- +
A, G12.5 ns
Refer to Fig. 4-6, performance check setup. Use the fol-
g. Remove the DC 5010 CHANNEL B input cable and
lowing control settings.
terminate this cable end with a 50 fl terminator.
Pulse Period
Pulse Duration
Low Level
High Level
Back Term
Pulse Generator
h. Set the sinewave generator for 300 MHz at approxi-
mately 150 mV, and connect the generator output to the
DC 501 0 CHANNEL B input.
-
i. Change the pulse generator Pulse Period to 10 ns
range (pulse width setting remains at 4.0 ns).
REV JUL 1983