TB 9-6625-2254-24
Table 6. Ohms
Test instrument
Calibrator
Nominal
err
1
Ohms range
output
indication
(%)
190
0.07
200
1.9 k
0.06
2k
19
0.07
20 k
k
190
0.06
200 k
k
1.9 M
0.12
2M
19
0.11
20 M
M
Use two-wire comp through 19 k
nominal outputs.
1
b. Adjustments
(1) Simultaneously press the (up) or
(down) pushbuttons. After the TI indicates
"doNE", the display will indicate 0 1 count.
(2) With the appropriate resistance (determined by the select range) applied,
simultaneously press the (up) or (down) pushbuttons. After the TI indicates "doNE",
the display will indicate 0 1 count (R).
10. Dc Current
a. Performance Check
NOTE
Do not exceed 2 A at the mA and LOW input terminals.
(1)
Press DCA pushbutton.
(2)
Disconnect TI from calibrator and leave terminals open.
Select the 200 A range by pressing the
(3)
(up) or
(down) pushbutton.
(4) If TI does not indicate within limits specified in first row of table 7,
perform b (l) below.
(5) Repeat technique of (3) above for remaining ranges. If TI does not indicate
within limits specified in table 7, perform b (l) below.
Table 7. Dc Current Zero
Indication limits
Input
(18 to 28 C)
Range
LOW to mA
Min
Max
200 A
Open
0.00
0.02
2 mA
Open
.0000
.0002
20 mA
Open
0.000
0.002
200 mA
Open
0.00
0.02
2000 mA
Open
0.0
0.2
(6) Connect TI mA and LOW terminals to the calibrator HI and LO output
terminals.
(down) pushbutton to select the 200 A range.
(7)
Press
(up) or
