Check Lnput Impedance - Tektronix DC 5010 Anleitung

Calibration-DC
501 0
Performance Check Procedure
h. Reconnect the accessory cable assembly to the digi-
tal multimeter input.
i. Press the
t
(increment) button until the digital
multimeter display just changes to a low readout. Press the
4
(decrement) button until the digital multimeter display just
changes to a high readout. Then press the DC 5010 AUTO
TRIG button.
j. CHECK-that the DC 501 0 display readout indicates
the same value as was noted on step 3-f, +40 mV.
k. Repeat steps a through k using CHANNEL B.
4. Check Input Impedance: 50 0,
&3%;
1 M0,
& 1
Yo
Refer to Fig. 4-2 performance check setup. Use the fol-
lowing control settings.
Digital Multimeter
Function-Range 2 MQ
DC
5010
CHANNEL A and
CHANNEL B
ATTEN X I (lighted)
TERM 1 m Q (unlighted)
a. Connect a coaxial cable from the DC 501 0 CHANNEL
- 7
A input to the digital multimeter input using a bnc-to-banana
adapter.
b. CHECK-that the digital multimeter display readout
indicates between .9800 and 1.0200 (MQ).
c. Press the DC 5010 CHANNEL A ATTEN X5 button
(unlighted).
d. CHECK-that the digital multimeter display readout
indicates between .9800 and 1.0200 (MQ).
e. Change the digital multimeter Function-Range switch
to 2 kQ.
f. Press the DC 5010 CHANNEL A TERM 50
Q
button
(lighted).
g. CHECK-that the digital multimeter display readout
indicates between .0490 and .0510 (kQ).
--
h. Press DC 501 0 CHANNEL A ATTEN X I button
(lighted).
Digital
Multimeter
REV JUL 1983