Check Rms Current Measurement Accuracy - Tektronix 213 DMM Instruction Manual

b. Set INPUT COUPLING to AC.
c. Set VOL TS-mA/DIV and Calibrator as shown in
Table 5-7.
d. CHECK-Reading is within limits shown in Table 5-7.
e. Disconnect the Voltmeter and Calibrator.
TABLE 5-7
RMS Voltage Measurement Accuracy
VOLTS-mA/DIV Amplitude
Setting Calibrator
Reading Limits
(blue scale)
Setting
0.1 0.2 V This reading should be
the same as the Digital
1 2V
Voltmeter for the same
10 20 V
number of digits.
100 100 V
10. CHECK RMS CURRENT MEASUREMENT ACCU-
RACY
@
NOTE
This check requires the use of the AC Calibration
Standard. For further information, refer to the
following in Section 6: (a) Calibration procedure
step 13; (b) Item 5 and footnote 3 in Table 6-1.
Performance Check-213 Service
a. Set mA pushbutton in.
b. Connect the AC Calibration Standard (Current con-
figuration) to the mA-n and common jacks using two
banana plug to BNC adapters and a cable.
c. Set VOL TS-mA/DIV and the Standard as shown in
Table 5-8.
d. CHECK-Reading is within limits shown in Table
5-8.
e. Disconnect Standard.
TABLE 5-8
RMS Current Measurement Accuracy
VOL TS-mAIDIV AC Calibration
Reading
Setting Standard Setting
(blue scale)
(set at 40 kHz)
Limits
0.1 0.200 mA .1950 to .2050
1 2.00 mA
1.925 to 2.075
10 20.00 mA 19.25 to 20.75
100 200.0 mA 192.5 to 207 .5
1000 1000 mA 0925 to 1075
5-9