Tektronix DM 5010, Инструкция по эксплуатации

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Adjustment Procedure —DM 5010
Table 6-5
OHMS GAIN CALIBRATION FACTORS
DM 5010
Range
DM 5010
FAST
Resistance
Standard
ENTER
applied resistance
Display Reading
(entered resistance)
200 Ω off
on
0.00019 MΩ
0.00019 MΩ
2 kΩ on
off
0.00190 MΩ
0.00190 MΩ
20 kΩ off
on
0.01900 MΩ
0.01900 MΩ
200 kΩ on
off
0.19000 MΩ
0.19000 MΩ
2 MΩ off
on
1.90000 MΩ
1.90000 MΩ ± 1 in LSD
20 MΩ 3 on
off
9.00000 MΩ
9.00000 MΩ
±3 in LSD
‘ Connect SR1 10M standard in series with the DB 62. To minimize the effect of noise, make physical contact with the DM 5010 chassis
ground terminal.
5. Adjust the ACV Offsets
a. Turn off the power module, remove the DM 5010, and
connect the DM 5010 rear-interface connectors to the pow­
er module via the flexible extender cables. Turn on the pow­
er module.
b. Connect a shorting plug between the HIGH and LOW
input connectors.
c. Set the DM 5010 controls to the preliminary settings
with the following exceptions:
ACV + DCV on
d. Set the DM 501A to measure 200 mV de.
e. Connect the DM 501A low connector to the DM 5010
Lo test point (TP1701) and the high connector to the
DM 5010 Atten Out test point (TP1503). Refer to Fig. 10-1
for test point locations.
f. ADJUST—the Atten Offset (R1601), using an insulat­
ed adjustment tool, for a DM 501A reading of 0 ±0.05 mV.
g. Move the DM 501A high lead to the DM 5010 Amp
Out test point (TP1201).
h. ADJUST—the Amp Offset (R1305) for a DM501A
reading of 0 ±0.50 mV.
i. Disconnect the DM 501A leads and remove the short­
ing plug.
6. Adjust ACV Gain Calibration Factors
a. Set the DM 5010 controls to the preliminary settings
with the following exception:
ACV + DCV on
b. Connect the ac calibrator to the DM 5010 HIGH and
LOW input connectors.
c. Set the 200 Hz ac calibrator output to the voltage list­
ed in the table.
d. Press ENTER.
6-6