Check Resistance Measurement Accuracy; Check/Adjust Rms Converter; Check Rms Converter Dc Voltage Response - Tektronix 213 DMM Instruction Manual

b. Connect the Resistance Standard to the mA-n and
common jacks using two banana plug to BNC adapters
and a cable. Set the Standard to 20 kn.
c. CHECK-Reading is20.00±0.11 (19.89to20.11).
d. ADJUST-Ohms Adj, R215, for a reading of 20.00.
9. CHECK RESISTANCE MEASUREMENT ACCURACY
a. Set VOL TS-mA/DIV and the Resistance Standard as
shown in Table 6-8.
b. CHECK-Reading is within limits shown in Table 6-8.
c. Disconnect the Standard.
TABLE 6-8
Resistance Measurement Accuracy
VOL TS-mAIDIV
Resistance
Setting Standard Reading Limits
Setting
1 kn
o.5oo n 0.500 0.494 to 0.506
10 kn 5.00 kn
05.00
04.96 to 05.04
100 kn 50.0 kn 050.0 049.6 to 050.4
1Mn
500 kn
0.500
0.496 to 0.504
10 Mn 5.00 Mn 05.00
04.94 to 05.06
10. CHECK/ADJUST RMS CONVERTER
@
a. Set: VOL TS
RMS
VOL TS-mA/DIV
Button · i n
Button in
1 (blue scale)
INPUT COUPLING AC
b. Connect the Digital Voltmeter and the probe to the
Sine-Wave Generator with two dual banana-plug to BNC
adapters, a T-Connector, a probe adapter, and a cable.
Set the Generator for a 1 kHz frequency output.
Cal ibration-213 Service
c. Set the Generator for a 0.150 V rms output (check
against Digital Voltmeter).
NOTE
If the output amplitude control on the Genera-
tor is not sensitive enough to be adjusted to
exactly 0.150 V rms in the above step, or to
exactly 1.500 V rms is a later step, set it to a
stable setting that is as close as possible to the
specified voltage. When this is done, the CHECK
step reading must be modified to that shown on
the Digital Voltmeter plus or minus the tolerance
given in the CHECK step (e.g. if the generator is
set such that the Digital Voltmeter reads 0. 151,
then the
213
should read
0.157 ± 0.007,
which
is a limit reading of
0.150
to
0. 164).
When mak-
ing the AC Zero and AC Gain adjustments, these
must be made to the exact reading on the Digi-
tal Voltmeter r3ther than to the reading speci-
fied in the ADJUST step (e.g. in the example
above, AC Zero would be adjusted to 0. 157 in-
stead of 0.150).
d. CHECK-Reading of 0.150 ± 0.007 (0.143 to 0.157).
e. ADJUST-AC Zero, R195, for 0.150.
f. Set the Generator to 1.500 V rms (check against Digi-
tal Voltmeter).
g. CHECK-Reading of 1.500 ± 0.020 ( 1.480 to 1.520).
h. ADJUST -AC Gain R 188, for 1.500.
i. Repeat steps c through i until there is no error.
11. CHECK RMS CONVERTER DC VOLTAGE RES-
PONSE
a. Set: RMS Button in
INPUT COUPLING DC
b. Connect the probe to the DC Voltage Standard with ·
a dual banana-plug to BNC adapter and a probe adapter.
Set the output for +0.100 V.
c. CHECK-Reading of +0.100 ± 0.007 (0.093 to
0.107).
6-15