Tektronix DC 5010 Anleitung Seite 267

Calibration-DC
501 0
Performance Check Procedure
j. Press to light the DC 5010 FREQ A button.
k. Adjust the pulse generator Period Variable until the
DC 5010 display readout indicates 50.XXX MHz (the last
three digits can vary due to source instability).
I. Press to light the DC 5010 EVENTS B DUR A button,
then press the AUTO TRIG button.
p. Replace the 18-inch coaxial cable (from the DC 5010
CHANNEL A input to the power divider) with a dual bnc
male connector.
q. CHECK-that
the DC 501 0 display readout indicates
approximately 2.5 ns. Note this reading.
r. Replace the 42-inch coaxial cable (from the DC 5010
CHANNEL B input to the power divider) with the 18-inch
cable that was removed in Step 15-p.
m. CHECK-that the DC 501 0 display readout indicates
between 2.10 and 3.30.
s. Press to light the DC 5010 TlME A
-
B button.
Delay Mismatch Check:
n. Disconnect sinewave generator from CHANNEL B
and reconnect the 42-inch cable from the power splitter to
CHANNEL B, after having removed its 50
! J
terminator.
o. Press to light the DC 5010 TlME A
+
B button, then
press the NULL button (lighted).
t. CHECK-that the DC 5010 display indication, minus
(-)
the readout noted in step 15-q, is 0.0
4 2
ns.
Minimum Time B
- ,
A Check:
u. Press to light the DC 5010 FREQ A button.
Power
Module
\
CHANNEL B
Input
18" Cable
Pulse Sinewave
Generator Generator
OUT
9
OUT
Q
Fig. 4-6. Performance Check setup for step 15.
REV JUL 1983