Tektronix DM 5010, Instruction Manual

Page: 217 / 347

Performance Check— DM 5010
Table 5-5
DC NORMAL MODE REJECTION
50-60 Hz
Jumper
Position
DM 5010
FAST
Calibrator
Frequency (Hz)
Display
Reading
Off 60.2, ±0.02 PASS
on 60.2 ±0.02 PASS
60 Hz
on 59.8, ±0.02
PASS
off 59.8, ±0.02 PASS
off 50.2, ±0.02 PASS
off
49.8, ±0.02 PASS
50 Hz
on
49.8, ±0.02
PASS
on 50.2, ±0.02 PASS
5. Ohms Accuracy
a. Set the DM 5010 front-panel controls to the prelimi­
nary control settings with the following exception:
OHMS on
b. Connect a shorting plug between the DM 5010 HIGH
and LOW input connectors.
c. CHECK—that the display reads within the limits listed
in Table 5-6, at each conversion rate.
d. Set the DM 5010 front panel controls to the 200 Ω
range and normal conversion rate. Press the NULL button.
Remove the shorting plug and connect the decade resis­
tance box to the DM 5010 input connectors using a coaxial
cable with less than 0.3 Ω. See Fig. 5-3A.
e. Set the decade box resistance to the value listed in
Table 5-7.
f. CHECK—that the display reads within the limits listed
in the table.
g. Set the DM 5010 CONVERSION RATE as shown in
the next line of the table.
h. CHECK—that the display reads within the limits listed
in the table.
i. Set the DM5010 range, CONVERSION RATE, and
the decade box resistance as listed in the next line of the
table.
j. Repeat parts f through i for the remaining lines of the
table, except change the equipment setup as shown in Fig.
5-3B for the 20 MΩ range checks.
k. Remove ail connections to the DM 5010.
Table 5-6
OHMS OFFSET ACCURACY
DM 5010
Range
DM 5010
FAST
Display Limits
Ambient Temp. Range
+ 18 to + 28°C
Ambient Temp. Range
Oto + 18’C, +28 to +50°C
200 Ω Off
on
± 0.03 Ω a
±0.1 Ωa
±0.12 Ω a
±0.2Ω a
2 kΩ
on
off
± .001 kΩ
± .0002 Ω6
± .002 kΩ
± .0007 kΩc
20 kΩ off
on
±0.002 kΩ
±0.01 kΩ
±0.007 kΩ
±0.02 kΩ
200 kΩ on
off
±0.1 kΩ
±0.02 kΩ
±0.2 kΩ
±0.07 kΩ
2 MΩ off
on
± .0002 MΩ
± .001 MΩ
± .0007 MΩ
± .002 MΩ
20 MΩ on
off
±0.01 MΩ
±0.001 MΩ
±0.01 MΩ
±0.002 MΩ
a - With NULL, if NULL is not used add ±0.2 Q.
b - With NULL, if NULL is not used add ±0.0002 kΩ.
REV OCT 1984
5 :9