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Calibration Procedure (Performance Cheek)-DM 505
c. CHECK-that the DM
505 display reads within
the
g
Check Common Mode Rejection (PC Mode)
limits for the ambient temperature as listed in Table 4-2.
a. Connect the bnc female to dual banana connector
to the VOLTS/R and LOW connectors.
d.
S e t
the dc calibrator output voltage t o
0 V
and
disconnect it from
the DM
505.
b. Connect
the
bnc male t o dual binding post connec-
tor to the bnc female connector attached t o the DM 505
front panel.
2
Check Ac Voltage Accuracy
a. Set theacvoltagecalibrator t o 0 Vandconnectthe
ac voltage calibrator (and power ampiifier,
as needed) to
c.
Connect
the 1 kR
resistor between the binding
the VOLTS/R
and LOW
input CQnneCtOrS through the
posts on the dual binding post connector.
coaxial cable and necessary adapters.
b. Press the VOLTS AC button, Press the range
d. Connect the red clip lead of the bnc female to clip
buttons and set
ac calibrator voltage
and
f
requenc~ as
lead adapter to the red binding
post
and the black cli p lead
listed i n Table 4-3.
to the DM 505 ground binding post.
c. CHECK-that the
DM 505 display reads within the
e. Connect the bnc female connector through a coax-
limits tor the ambient temperature as listed in Table 4-3.
ial cable to the dc voltage calibrator.
d. Set the
ac calibrator output voltage to
0
Y
and
disconnect it from the DM 505.
f. Press the VOLTS DC and 200 mV pushbuttons.
Table
4-3
AC VOLTAGE ACCURACY
45 Hz-1
0
kHz
1.779 t o
1.821
17.79 t o 18.21
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